WO2023035884A1 - 动态画质视频播放方法、装置、电子设备及存储介质 - Google Patents

动态画质视频播放方法、装置、电子设备及存储介质 Download PDF

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Publication number
WO2023035884A1
WO2023035884A1 PCT/CN2022/112892 CN2022112892W WO2023035884A1 WO 2023035884 A1 WO2023035884 A1 WO 2023035884A1 CN 2022112892 W CN2022112892 W CN 2022112892W WO 2023035884 A1 WO2023035884 A1 WO 2023035884A1
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Prior art keywords
video
image quality
target
quality
played
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PCT/CN2022/112892
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English (en)
French (fr)
Inventor
杨典
黄胜兰
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北京字跳网络技术有限公司
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Priority to US18/572,164 priority Critical patent/US20240119578A1/en
Publication of WO2023035884A1 publication Critical patent/WO2023035884A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
    • H04L65/613—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for the control of the source by the destination
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
    • H04L65/612—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for unicast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/80—Responding to QoS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
    • H04N21/25866—Management of end-user data
    • H04N21/25891—Management of end-user data being end-user preferences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/2662—Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30168—Image quality inspection

Definitions

  • Embodiments of the present disclosure relate to the field of computer technology, and in particular, to a method, device, electronic device, and storage medium for playing video with dynamic image quality.
  • Feed flow also known as information flow
  • Information flow is a technology that pushes information to users based on recommended information and personalized data.
  • Feed-based video playback is widely used in video applications such as short videos. In this scenario, based on factors such as different network conditions, device types, and user habits, different users have different requirements for video quality when playing videos.
  • the quality setting of the video played in the feed stream is usually determined based on network conditions. Image quality at different network speeds.
  • Embodiments of the present disclosure provide a method, device, electronic device, and storage medium for playing video with dynamic image quality, so as to overcome the inability of the prior art to satisfy personalized image quality requirements of users under different network conditions.
  • an embodiment of the present disclosure provides a method for playing a video with dynamic image quality, including:
  • the switching instruction is used to switch the target video played in the video information flow; according to the switching instruction and the video information of the target video corresponding to the switching instruction, determine the quality selection strategy,
  • the image quality selection strategy is used to characterize the image quality gear when playing the video to be played in the video information stream under different network conditions; according to the image quality selection strategy and current network conditions, determine the target image quality file bit, and play the video to be played in the video information stream based on the target image quality gear.
  • an embodiment of the present disclosure provides a dynamic image quality video playback device, including:
  • the receiving module is used to receive a switching instruction for the video information stream, and the switching instruction is used to switch the target video played in the video information stream;
  • a determining module configured to determine an image quality selection strategy according to the switching instruction and the video information of the target video corresponding to the switching instruction, and the image quality selection strategy is used to represent playing the video information stream under different network conditions The quality gear of the video to be played in ;
  • the playback module is configured to determine a target image quality gear according to the image quality selection strategy and current network conditions, and play the video to be played in the video information stream based on the target image quality gear.
  • an electronic device including:
  • processor and a memory communicatively connected to the processor
  • the memory stores computer-executable instructions
  • the processor executes the computer-executed instructions stored in the memory to implement the dynamic image quality video playback method described in the above first aspect and various possible designs of the first aspect.
  • an embodiment of the present disclosure provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the processor executes the computer-executable instructions, the above first aspect and the first Various possible designs of the described method for playing video with dynamic quality.
  • an embodiment of the present disclosure provides a computer program product, including a computer program.
  • the computer program When the computer program is executed by a processor, it implements the dynamic image quality video playback method described in the above first aspect and various possible designs of the first aspect. .
  • an embodiment of the present disclosure provides a computer program.
  • the computer program When the computer program is executed by a processor, the method for playing a video with dynamic image quality as described in the above first aspect and various possible designs of the first aspect is implemented.
  • FIG. 1 is an application scene diagram of a method for playing a video with dynamic image quality provided by an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of an automatic image quality setting for a video application provided by an embodiment of the present disclosure
  • FIG. 3 is a first schematic flow diagram of a method for playing a video with dynamic image quality provided by an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of a high-quality strategy and a high-fluency strategy provided by an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of determining a quality selection strategy based on the buffering duration of a target video provided by an embodiment of the present disclosure
  • FIG. 6 is a schematic diagram of another strategy for determining image quality selection based on the buffering duration of a target video provided by an embodiment of the present disclosure
  • FIG. 7 is a second schematic flow diagram of a method for playing a video with dynamic image quality provided by an embodiment of the present disclosure
  • FIG. 8 is a structural block diagram of a dynamic image quality video playback device provided by an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of an electronic device provided by an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of a hardware structure of an electronic device provided by an embodiment of the present disclosure.
  • FIG. 1 is an application scenario diagram of the dynamic image quality video playback method provided by the embodiment of the present disclosure.
  • the dynamic image quality video playback method provided by the embodiment of the disclosure can be applied to video playback scenarios based on video information streams, more specifically Specifically, as shown in FIG. 1 , the execution subject of the method provided in this embodiment may be a terminal device, such as a smart phone, and a video application (Application, APP) based on information flow (Feed flow) technology runs in the terminal device.
  • the video is played in the form of video information stream.
  • the terminal device When the user watches the target video in the video information stream (shown as video a in the figure), he can perform a switching operation (shown as sliding up in the figure) through the touch screen of the terminal device, so as to switch the target video and play the video information stream
  • the video shown as video b in the figure
  • the terminal device communicates with the server.
  • the terminal device accesses the server to load the video data of the target video for playback, or preloads the video to be played in the video information stream.
  • the video loaded (or preloaded) by the terminal device corresponds to multiple quality levels. The higher the quality, the higher the video resolution and frame rate (that is, the higher the bit rate), and correspondingly, the The more traffic and bandwidth the terminal device consumes when loading the video from the server.
  • the image quality setting of the video played in the video information stream is usually determined based on the network quality, that is, through the "network speed-code” representing the mapping relationship between network quality and image quality gear. Rate Mapping Model" to determine the quality of the video.
  • Fig. 2 is a schematic diagram of an automatic image quality setting for a video application provided by an embodiment of the present disclosure. As shown in Fig. 2, when the network condition is good, the video application plays video at a higher resolution, for example, in Fig.
  • the video application is based on the video gear fixed by the user.
  • the user manually sets the video resolution to the "ultra-definition” gear, so that the video is always displayed at The resolution of the "ultra-clear” gear is played, giving priority to ensuring the clarity of the video and improving the quality of the picture, but at the same time it may cause the problem of video freezing.
  • the viewing experience of a video is actually determined by factors in two dimensions: video bit rate (video resolution, video frame rate) and video fluency.
  • video bit rate video resolution, video frame rate
  • video fluency For different users, the emphasis on video bit rate and video fluency is different. For example, some users pay more attention to video bit rate, but are not sensitive to video stuttering; while some users pay more attention to video smoothness. It is sensitive to video freeze, but not to video bit rate.
  • image quality selection strategies which are used to determine the video image quality under different network conditions. Different users will choose different image quality selection strategies according to their individual needs.
  • the technical solution of determining video quality only through network conditions cannot realize the above-mentioned different picture quality selection strategies, and only one strategy, such as "network speed-bit rate mapping relationship", can be used to determine a fixed video quality.
  • the video quality cannot satisfy the user's different picture quality selection preferences under one network speed condition, which affects the user's video viewing experience.
  • the embodiments of the present disclosure provide a method for playing video with dynamic quality to solve the above problems.
  • FIG. 3 is a first schematic flow diagram of a method for playing a video with dynamic image quality provided by an embodiment of the present disclosure. Referring to FIG. 3 , the method of this embodiment can be applied to a terminal device.
  • the method for playing a video with dynamic image quality includes:
  • Step S101 Receive a switching instruction for a video information stream, the switching instruction is used to switch a target video played in the video information stream.
  • the video information stream is generated based on the recommendation information, and represents the information of the video being played by the terminal device and the set of videos to be played.
  • the video information stream is represented as multiple videos that can be played continuously on the terminal device side, where , the video currently played by the terminal device is the target video in the video information stream, and the video played after the target video is the video to be played in the video information stream.
  • the terminal device has a touch screen.
  • the terminal device plays the video in the video information stream through the touch screen
  • the terminal device receives the corresponding switching instruction and responds, so that the currently played The video, that is, the target video, is switched to realize playing the next (or previous) video in the video information stream.
  • the user performs a switching operation through the touch screen, for example, sliding the touch screen up and down, clicking a "next" virtual button on the touch screen, and the like.
  • Step S102 According to the switching instruction and the video information of the target video corresponding to the switching instruction, determine the quality selection strategy.
  • the quality selection strategy is used to represent the quality file when playing the video to be played in the video information stream under different network conditions bit.
  • the switching instruction is used to instruct the terminal device to switch the target video currently played by the terminal device.
  • the video information of the target video is information used to characterize the playing status of the target video. More specifically, for example, the duration of video buffering during the playback of the target video, the playback duration of the target video before the switching instruction is triggered, and the like.
  • the user will switch accordingly according to the playback status of the target video, such as whether video buffering (that is, freezing) occurs. For users who are sensitive to freeze, the video will be switched quickly when the video freezes; on the contrary, for users who are not sensitive to freeze, the video will not be switched quickly.
  • the video information of the target video it is possible to determine the freezing situation of the video and then determine the current network conditions, and based on the user's response to it, that is, the switching command, determine the user's preferred picture quality gear under the current network conditions , that is, the quality selection strategy. Specifically, for example, when the network condition is normal, select a high-quality gear, and when the network condition is poor, select a low-quality gear; or, when the network condition is normal, select a high-quality gear If the network conditions are normal, choose the high-quality gear; or, if the network conditions are normal, directly choose the low-quality gear.
  • the picture quality selection policy includes a high picture quality policy or a high fluency policy
  • the high picture quality policy is used to instruct the terminal device to play the video information stream at the first picture quality gear under the first network condition.
  • the high-fluency policy is used to instruct the terminal device to play the video to be played in the video stream at the second quality level under the first network condition, and the bit rate corresponding to the first quality level is higher than that of the second quality level.
  • the bit rate corresponding to the second image quality gear includes one or more download speeds, and the terminal device is under the first network condition, that is, when the terminal device is at a certain or several download speeds.
  • the high-quality policy may be a mapping relationship curve representing "download speed-quality level”
  • the high-fluency policy may be another mapping relationship curve representing "download speed-quality level”.
  • the high-quality policy and the high-fluency policy correspond to different picture quality gears.
  • Fig. 4 is a schematic diagram of a high-quality strategy and a high-fluency strategy provided by an embodiment of the present disclosure. As shown in Fig. 4, for example, when the download speed is 100kbps (kilobit per second), 500kbps and 1000kbps respectively, The image quality gears corresponding to the high-quality strategy are "B file", “C file” and “C file”, and the image quality files corresponding to the high-fluency strategy are "A file", "A file” and "A file”. files”. Wherein, for example, the image quality gear corresponding to "C file” can be “ultra clear", the image quality gear corresponding to "B file” can be “high definition”, and the image quality gear corresponding to "A file” can be For "Pu Qing".
  • the first image quality gear corresponds to a video with a high bit rate
  • the second image quality gear corresponds to a video with a low bit rate.
  • step S102 is introduced below with a specific embodiment:
  • the video information includes a buffering duration
  • the buffering duration is used to represent the duration of video buffering during the playback of the target video.
  • Determine the quality selection strategy including:
  • the image quality selection strategy is a high-smooth strategy; if the first playback duration is greater than the playback duration threshold, the image quality selection strategy is the high image quality strategy.
  • the buffering duration of the target video is greater than the buffering duration threshold, it indicates that the buffering time is too long (ie, stuck) during the playback of the target video.
  • the prediction quality selection strategy is a high-fluency strategy; on the contrary, if the first playback duration is greater than the playback duration threshold, it means that the user switched to the target video after a relatively long period of time after the freeze occurred, or the target video has not been switched at all, which in turn shows that the user is concerned about the freeze. Insensitive, therefore, the prediction quality selection strategy is a high quality strategy.
  • the video information also includes resolution and/or frame rate.
  • the quality selection strategy is high quality policy; if the resolution of the target video is lower than the preset resolution threshold, and/or the frame rate of the target video is lower than the preset resolution threshold, the quality selection strategy is The strategy is a high-fluency strategy.
  • the resolution is a parameter that characterizes the clarity of the video.
  • the higher the resolution and frame rate of the video the higher the bit rate of the video, that is, the more bandwidth and traffic consumed by loading the video.
  • the buffering duration of the target video is less than the buffering duration threshold, it means that the target video has no obvious freeze, if the resolution of the target video is greater than the preset resolution threshold, and/or the frame rate of the target video is greater than the preset resolution Threshold, indicating that the user sets the resolution and/or frame rate of the video to a higher gear through preset parameters, that is, it indicates that the user tends to play the video with high image quality and high bit rate , in this case, the quality selection strategy is the high quality strategy.
  • the quality selection strategy is predicted, which further improves the judgment of the user's preference for quality Accuracy, increase the coverage of application scenarios.
  • the first picture quality gear includes at least two sub-quality gears, that is, under a network condition, the high-quality policy corresponds to two and above sub-quality levels, such as "ultra-clear” and "high-definition", in a possible implementation, when determining the target quality level based on the quality selection strategy and the current network Select one of the sub-quality levels at random.
  • the target sub-gear in the first image quality gear is determined according to the resolution and/or frame rate of the target video.
  • gears for image quality adjustment including "Blu-ray”, “Ultra-clear”, “High-definition”, and “Normal definition”, among which "Blu-ray”, “Ultra-clear” and “High-definition” are the first picture quality
  • the three sub-gears in the gear get the resolution of the target video, based on the resolution of the target video, select the gear closest to its resolution, for example, "ultra-clear” as the target sub-gear in the first quality gear stalls.
  • the target sub-gear is used as the target image quality gear, and the video to be played in the video information stream is loaded and played.
  • the steps of this embodiment by obtaining the resolution and/or frame rate of the target video, from the first image quality gear including a plurality of sub-gears, determine the target sub-gear that matches the target video, thereby further Improve the accuracy of the judgment of the picture quality gear, improve the matching degree with the user's picture quality preference, and improve the user's viewing experience.
  • the buffering duration threshold, the playback duration threshold, the resolution threshold, and the frame rate threshold can be set according to specific needs, and are not specifically limited here.
  • Fig. 5 is a schematic diagram of a strategy for determining image quality selection based on the buffering duration of the target video provided by an embodiment of the present disclosure.
  • the target video is played along the playback direction, and after the terminal device receives a switching instruction for the target video , to obtain the total buffering duration of the target video, wherein, specifically, before receiving the switching instruction, the target video has been buffered three times in total, corresponding to the three sub-buffers of A1, A2 and A3 respectively, and the total buffering duration is A1, A2 and A3 The sum of the corresponding durations. Compare the total buffering time with the buffering time threshold to determine whether the target video freezes.
  • the total buffering duration is greater than the buffering duration threshold, it is determined that the target video is stuck, and if the total buffering duration is less than or equal to the buffering duration threshold, it is determined that the target video is not stuck.
  • the corresponding quality selection strategy is determined.
  • the overall freeze condition of the target video is judged, and on this basis, based on the user's response to the overall freeze situation (switching instruction), the video quality selection strategy is judged , realizing the prediction of the user's image quality preference, avoiding the problem of increasing the operation steps caused by the user's manual setting and affecting the user's video viewing experience.
  • the terminal device may also judge the video quality selection strategy according to the user's response (switching instruction) to the target video once freezing occurs.
  • FIG. 6 is a schematic diagram of another strategy for determining image quality selection based on the buffering duration of the target video provided by an embodiment of the present disclosure. As shown in FIG.
  • the terminal device After the terminal device receives a switching instruction for the target video, it acquires the target video playback process In the target video, there are two situations at this time, the start moment, the end moment (if it exists) and the trigger moment when the switching instruction is triggered between the buffers (shown as C in the figure) where the target video occurs, and if the trigger moment occurs at the end After the time, there is an end time; if the trigger time occurs before the end time, there is no end time.
  • the image quality selection strategy is a high-fluency strategy; if the distance between the start time and the end time (shown as distance a in the figure) b) greater than the second duration threshold, the image quality selection strategy is a high image quality strategy.
  • the image quality selection strategy It is determined as a high-fluency strategy. Under different network conditions, the high-fluency strategy corresponds to a lower image quality gear, so it can effectively improve video fluency; if the distance between the start time and the end time is greater than the second duration threshold, it means The user has waited for the entire video buffering process, and the process is long. It is predicted that the user is not sensitive to freezes and prefers high-quality videos.
  • the quality selection strategy is determined as the high-quality strategy, and the high-quality strategy Under different network conditions, it corresponds to a higher picture quality gear, so it can effectively improve the picture quality of the video and improve the definition.
  • the accuracy of the user's preference can be further predicted and the viewing experience of the user can be improved.
  • Step S103 Determine the target image quality gear according to the image quality selection strategy and current network conditions, and play the video to be played in the video information stream based on the target image quality gear.
  • the applicable image quality gears under different network conditions are determined. For example, when the download speed is below 100kbps, 100kbps-500kbps and 500kbps-2Mbps, the corresponding The picture quality gears are "normal definition", "high definition” and “ultra clear”.
  • the terminal device can determine the corresponding template image quality gear based on the image quality selection strategy by testing the current network download speed. For example, if the current download speed is 300kbps, the target image quality can be determined based on the above image quality selection strategy The quality gear is "HD".
  • the video to be played in the subsequent video information stream is preloaded and played, so that the image quality of the video to be played can match the image quality preference required by the user, so as to achieve the desired image quality of the user. viewing experience.
  • matching the corresponding data file on the server side according to the image quality level, and the process of data loading and playing are related technologies known to those skilled in the art, and will not be repeated here.
  • the switching instruction is used to switch the target video played in the video information stream; according to the switching instruction and the video information of the target video corresponding to the switching instruction, determine the quality selection strategy , the image quality selection strategy is used to represent the image quality gear when playing the video to be played in the video information stream under different network conditions; according to the image quality selection strategy and the current network conditions, determine the target image quality gear, and based on the target The video quality level plays the video to be played in the video information stream.
  • the video quality selection strategy determined by the switching command can realize the automatic selection of the video quality that meets the user's needs, instead of relying only on the network speed As the only influencing factor of video quality, it satisfies users' personalized picture quality requirements under different network speed conditions, and improves users' viewing experience when watching videos in the video information stream.
  • FIG. 7 is a second schematic flow diagram of a method for playing a video with dynamic image quality provided by an embodiment of the present disclosure.
  • the step of determining the quality selection strategy based on the video content information of the target video is added, wherein the video information includes video content information and buffer duration, and the video content information is used to represent The video category of the video, the buffering duration is used to represent the video buffering duration of the target video during playback; the image quality selection strategy includes at least two content sub-strategies, and the content sub-strategy is used to represent the corresponding video category under different network conditions The quality level of the video to be played.
  • the dynamic quality video playing method comprises:
  • Step S201 Receive a switching instruction for the video information stream, the switching instruction is used to switch the target video played in the video information stream.
  • Step S202 Determine the target video category of the target video according to the video content information of the target video.
  • the video content information is information representing the content category of the target video, for example, "teaching video”, “funny video", “news video” and so on.
  • the video content information may include a video category identifier, and different video category identifiers correspond to a video category respectively.
  • the terminal device receives the switching instruction for the video information stream, it acquires the video content information of the target video pre-stored locally or in the server, and then can determine the target category corresponding to the target video.
  • Step S203 According to the first playing duration and buffering duration of the target video, determine the content sub-policy corresponding to the target video category.
  • the first playing duration of the target video refers to the playing duration of the target video before the switching instruction is triggered, that is, the duration for the user to watch the target video.
  • the first playback duration shows the user's preference for video freezes.
  • the target video buffering duration is longer than the preset duration, if the first playback duration is longer, it means that the user is not sensitive to video freezes of this type of video. Otherwise, it means Users are sensitive to video freezes of this video type.
  • the implementation of the content sub-strategy corresponding to the target video category for example: when the buffer duration of the target video is greater than the buffer duration threshold, if the first playback duration is less than the playback duration threshold, it is determined that the content sub-strategy corresponding to the target video category is a high-fluency strategy, and if the first playback duration is greater than the playback duration threshold, then it is determined that the content sub-strategy corresponding to the target video category is a high-quality strategy.
  • each target video corresponds to a piece of video content information.
  • the user performs multiple switching operations through the touch screen of the terminal device to switch the currently playing target video in the video information stream, and the terminal device obtains the video content information of each target video according to the target video corresponding to each switching operation , that is, the first playback duration and buffer duration, and according to the first playback duration and buffer duration, determine the content sub-strategy corresponding to the target video category of each target video, and then generate an image quality selection strategy.
  • Step S204 Obtain the to-be-played video in the video information stream, and determine the to-be-played video category of the to-be-played video.
  • Step S205 According to the category of the video to be played, determine the corresponding target content sub-policy in the picture quality selection policy.
  • Step S206 Determine the target image quality level according to the target content sub-policy and current network conditions, and play the video to be played in the video information stream based on the target image quality level.
  • the image quality selection strategy including a plurality of content sub-strategies
  • the category of the video to be played based on the video category of the video to be played
  • select the corresponding content sub-strategy Policy which is the target content sub-policy.
  • determine the target image quality gear that matches the current network conditions based on the mapping relationship between the network conditions represented by the target content sub-strategy and the target image quality gear, determine the target image quality gear that matches the current network conditions, and use the target image quality gear for subsequent video Play, in order to realize the dynamic quality setting of specific video types, specific quality selection strategies, and specific network conditions, and improve the matching degree of video quality and user quality preferences.
  • the dynamic image quality video playback method provided in this embodiment is a technical solution implemented on the basis of the embodiment shown in Figure 3, that is, on the basis of the embodiment shown in Figure 3, the video category dimension is added to determine the image quality selection Therefore, in the step of determining the image quality selection strategy in this embodiment, after determining the video type of the target video, the implementation method and technical effect of determining the image quality selection strategy based on the target video of a specific video type are similar to those shown in FIG. 3 The steps of determining the image quality selection policy in the illustrated embodiment are similar, and reference may be made to the description in the embodiment shown in FIG. 3 , which will not be repeated here.
  • the steps of this embodiment by obtaining the switching instruction multiple times, and the video information of the target video corresponding to the switching instruction, construct a picture quality gear for representing the video quality level when playing the video to be played corresponding to each video category under different network conditions Image quality selection strategy, so that when playing videos of different video categories to be played, it can be processed based on different image quality selection strategies, realizing dynamic image quality settings for different types of videos, and due to the dynamics of different types of videos
  • the image quality setting is determined based on the user's operation, and can match the user's image quality preference. Therefore, the matching degree between the video image quality and the user's image quality preference is further improved, and the user's viewing experience is improved.
  • step S201 is the same as the implementation manner of step S101 in the embodiment shown in FIG. 3 of the present disclosure, and will not be repeated here.
  • FIG. 8 is a structural block diagram of a device for playing a video with dynamic quality in an embodiment of the present disclosure. For ease of description, only the parts related to the embodiments of the present disclosure are shown. With reference to Fig. 8, dynamic image quality video player 3 comprises:
  • the receiving module 31 is configured to receive a switching instruction for the video information flow, and the switching instruction is used to switch the target video played in the video information flow;
  • the determination module 32 is used to determine the quality selection strategy according to the switching instruction and the video information of the target video corresponding to the switching instruction. quality gear;
  • the playback module 33 is configured to determine the target image quality gear according to the image quality selection strategy and current network conditions, and play the video to be played in the video information stream based on the target image quality gear.
  • the picture quality selection policy includes a high picture quality policy or a high fluency policy
  • the high picture quality policy is used to instruct the terminal device to play the video information stream at the first picture quality gear under the first network condition
  • the high-fluency policy is used to instruct the terminal device to play the video to be played in the video stream at the second quality level under the first network condition, and the bit rate corresponding to the first quality level is higher than that of the second quality level.
  • the bit rate corresponding to the second image quality gear is used to instruct the terminal device to play the video information stream at the first picture quality gear under the first network condition.
  • the video information includes a buffering duration, which is used to characterize the duration of video buffering of the target video during playback; the determining module 32 is specifically used to: acquire the first video of the target video before the triggering of the switching instruction Playing time; when the buffering time of the target video is longer than the buffering time threshold, if the first playing time is less than the playing time threshold, the image quality selection strategy is a high-smooth strategy; if the first playing time is longer than the playing time threshold, the image quality selection strategy is for high-resolution strategies.
  • the video information further includes resolution and/or frame rate
  • the determining module 32 is further configured to: acquire the resolution of the target video when the buffering duration of the target video is less than the buffering duration threshold, and /or frame rate; if the resolution of the target video is greater than the preset resolution threshold, and/or the frame rate of the target video is greater than the preset resolution threshold, the quality selection strategy is a high quality strategy.
  • the first picture quality gear includes at least two sub-quality picture quality gears; when the playback module 33 determines the target picture quality gear according to the picture quality selection strategy and the current network conditions, it is specifically used to : If the image quality selection strategy is a high image quality strategy, then according to the current network conditions, determine at least two sub-quality gears; according to the resolution and/or frame rate of the target video, and at least two sub-quality gears, Determine the target sub-quality level.
  • the determination module 32 when determining the quality selection strategy according to the switching instruction and the video information of the target video corresponding to the switching instruction, is specifically used to: obtain the target video during the playing process of the target video. The starting time of buffering; the triggering time when the switching instruction is triggered; if the distance between the starting time and the triggering time is less than the first duration threshold, the image quality selection strategy is a high-fluency strategy.
  • the determination module 32 is further configured to: obtain the end moment of video buffering of the target video during the playback of the target video; if the distance between the start moment and the end moment is greater than the second duration threshold, draw The quality selection strategy is a high-quality strategy.
  • the video information includes video content information and buffering duration
  • the video content information is used to represent the video category of the video
  • the buffering duration is used to represent the duration of video buffering of the target video during playback
  • image quality selection The strategy includes at least two content sub-strategies, and the content sub-strategies are used to characterize the image quality gear when playing the video to be played corresponding to the video category under different network conditions
  • the determination module 32 is specifically used for: according to the video content of the target video Information, determine the target video category of the target video; determine the content sub-strategy corresponding to the target video category according to the first playing duration and buffering duration of the target video.
  • the playback module 33 determines the target image quality gear according to the image quality selection strategy and the current network conditions, it is specifically used to: acquire the video to be played in the video information stream, and determine the video to be played The category of the video to be played; according to the category of the video to be played, determine the corresponding target content sub-strategy in the image quality selection strategy; determine the target image quality level according to the target content sub-strategy and current network conditions.
  • the dynamic image quality video playback device 3 provided in this embodiment can execute the technical solution of the above method embodiment, and its implementation principle and technical effect are similar, so this embodiment will not repeat them here.
  • the device provided in this embodiment can be used to implement the technical solutions of the above method embodiments, and its implementation principle and technical effect are similar, so this embodiment will not repeat them here.
  • FIG. 9 is a schematic structural diagram of an electronic device provided by an embodiment of the present disclosure. As shown in FIG. 9, the electronic device 4 includes:
  • memory 42 stores computer-executable instructions
  • the processor 41 executes the computer-executed instructions stored in the memory 42 to implement the dynamic quality video playback method in the embodiment shown in FIGS. 3-7 .
  • processor 41 and the memory 42 are connected through a bus 43 .
  • the electronic device 900 may be a terminal device or a server.
  • the terminal equipment may include but not limited to mobile phones, notebook computers, digital broadcast receivers, personal digital assistants (Personal Digital Assistant, PDA for short), tablet computers (Portable Android Device, PAD for short), portable multimedia players (Portable Media Player, referred to as PMP), mobile terminals such as vehicle-mounted terminals (such as vehicle-mounted navigation terminals), and fixed terminals such as digital TVs, desktop computers, etc.
  • PDA Personal Digital Assistant
  • PMP portable multimedia players
  • mobile terminals such as vehicle-mounted terminals (such as vehicle-mounted navigation terminals)
  • fixed terminals such as digital TVs, desktop computers, etc.
  • the electronic device shown in FIG. 10 is only an example, and should not limit the functions and application scope of the embodiments of the present disclosure.
  • an electronic device 900 may include a processing device (such as a central processing unit, a graphics processing unit, etc.) 901, which may be stored in a read-only memory (Read Only Memory, referred to as ROM) 902 or from a storage device. 908 loads the programs in the random access memory (Random Access Memory, RAM for short) 903 to execute various appropriate actions and processes. In the RAM 903, various programs and data necessary for the operation of the electronic device 900 are also stored.
  • the processing device 901, ROM 902, and RAM 903 are connected to each other through a bus 904.
  • An input/output (I/O) interface 905 is also connected to the bus 904 .
  • an input device 906 including, for example, a touch screen, a touchpad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; ), a speaker, a vibrator, etc.
  • a storage device 908 including, for example, a magnetic tape, a hard disk, etc.
  • the communication means 909 may allow the electronic device 900 to perform wireless or wired communication with other devices to exchange data. While FIG. 10 shows electronic device 900 having various means, it is to be understood that implementing or having all of the means shown is not a requirement. More or fewer means may alternatively be implemented or provided.
  • embodiments of the present disclosure include a computer program product, which includes a computer program carried on a computer-readable medium, where the computer program includes program codes for executing the methods shown in the flowcharts.
  • the computer program may be downloaded and installed from a network via communication means 909, or from storage means 908, or from ROM 902.
  • the processing device 901 the above-mentioned functions defined in the methods of the embodiments of the present disclosure are executed.
  • the above-mentioned computer-readable medium in the present disclosure may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two.
  • a computer readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof.
  • Computer-readable storage media may include, but are not limited to, electrical connections with one or more wires, portable computer diskettes, hard disks, random access memory (RAM), read-only memory (ROM), erasable Programming read-only memory (Erasable Programmable Read Only Memory, referred to as EPROM or flash memory), optical fiber, portable compact disk read-only memory (Compact Disc Read-Only Memory, referred to as CD-ROM), optical storage device, magnetic storage device, or the above any suitable combination.
  • a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.
  • a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave carrying computer-readable program code therein. Such propagated data signals may take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing.
  • the computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, and the computer-readable signal medium may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device .
  • Program code embodied on a computer readable medium may be transmitted by any appropriate medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.
  • the above-mentioned computer-readable medium may be included in the above-mentioned electronic device, or may exist independently without being incorporated into the electronic device.
  • the above-mentioned computer-readable medium carries one or more programs, and when the above-mentioned one or more programs are executed by the electronic device, the electronic device is made to execute the methods shown in the above-mentioned embodiments.
  • Computer program code for carrying out the operations of the present disclosure can be written in one or more programming languages, or combinations thereof, including object-oriented programming languages—such as Java, Smalltalk, C++, and conventional Procedural Programming Language - such as "C" or a similar programming language.
  • the program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server.
  • the remote computer can be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or it can be connected to an external A computer (connected via the Internet, eg, using an Internet service provider).
  • LAN Local Area Network
  • WAN Wide Area Network
  • each block in a flowchart or block diagram may represent a module, program segment, or portion of code that contains one or more logical functions for implementing specified executable instructions.
  • the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved.
  • each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations can be implemented by a dedicated hardware-based system that performs the specified functions or operations , or may be implemented by a combination of dedicated hardware and computer instructions.
  • the units involved in the embodiments described in the present disclosure may be implemented by software or by hardware. Wherein, the name of the unit does not constitute a limitation of the unit itself under certain circumstances, for example, the first obtaining unit may also be described as "a unit for obtaining at least two Internet Protocol addresses".
  • exemplary types of hardware logic components include: Field Programmable Gate Array (Field Programmable Gate Array, FPGA for short), Application Specific Integrated Circuit (ASIC for short), Application Specific Standard Products ( Application Specific Standard Parts (ASSP for short), System on Chip (SOC for short), Complex Programmable Logic Device (CPLD for short), etc.
  • a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device.
  • a machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium.
  • a machine-readable medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing.
  • machine-readable storage media would include one or more wire-based electrical connections, portable computer discs, hard drives, random access memory (RAM), read only memory (ROM), erasable programmable read only memory (EPROM or flash memory), optical fiber, compact disk read only memory (CD-ROM), optical storage, magnetic storage, or any suitable combination of the foregoing.
  • RAM random access memory
  • ROM read only memory
  • EPROM or flash memory erasable programmable read only memory
  • CD-ROM compact disk read only memory
  • magnetic storage or any suitable combination of the foregoing.
  • a method for playing a video with dynamic quality including:
  • the switching instruction is used to switch the target video played in the video information flow; according to the switching instruction and the video information of the target video corresponding to the switching instruction, determine the quality selection strategy,
  • the image quality selection strategy is used to characterize the image quality gear when playing the video to be played in the video information stream under different network conditions; according to the image quality selection strategy and current network conditions, determine the target image quality file bit, and play the video to be played in the video information stream based on the target image quality gear.
  • the picture quality selection policy includes a high picture quality policy or a high fluency policy
  • the high picture quality policy is used to instruct the terminal device to use the first picture quality under the first network condition Playing the video to be played in the video information stream at a gear
  • the high fluency policy is used to instruct the terminal device to play the video to be played in the video information stream at a second quality gear under the first network condition
  • the code rate corresponding to the first image quality gear is greater than the code rate corresponding to the second image quality gear.
  • the video information includes a buffering duration, and the buffering duration is used to characterize the video buffering duration of the target video during playback; according to the switching instruction, and the switching
  • the video information of the target video corresponding to the instruction determines the quality selection strategy, including: obtaining the first playing duration of the target video before the switching instruction is triggered; when the buffering duration of the target video is greater than the buffering duration threshold, if the If the first playback duration is less than the playback duration threshold, the image quality selection strategy is a high-smooth strategy; if the first playback duration is greater than the playback duration threshold, the image quality selection strategy is a high-quality strategy.
  • the video information further includes resolution and/or frame rate
  • the method further includes: when the buffering duration of the target video is less than a buffering duration threshold, acquiring the target Video resolution, and/or frame rate; if the resolution of the target video is greater than a preset resolution threshold, and/or the frame rate of the target video is greater than a preset resolution threshold, the image quality
  • the selection strategy is the high image quality strategy.
  • the first image quality gear includes at least two sub-quality image quality gears; according to the image quality selection strategy and current network conditions, determining the target image quality gear includes: If the image quality selection strategy is a high image quality strategy, then according to the current network conditions, determine at least two sub-quality gears; according to the resolution and/or frame rate of the target video, and the at least Two sub-quality levels, determine the target sub-quality level.
  • determining the picture quality selection strategy includes: acquiring the target video during the playing process of the target video. The starting moment of video buffering when the video occurs; the triggering moment when the switching instruction is triggered; if the distance between the starting moment and the triggering moment is less than the first duration threshold, the image quality selection strategy is a high-fluency strategy .
  • the method further includes: obtaining the end time of video buffering of the target video during the playback of the target video; if the distance between the start time and the end time is greater than the first Two duration thresholds, the image quality selection strategy is a high image quality strategy.
  • the video information includes video content information and buffering duration
  • the video content information is used to characterize the video category of the video
  • the buffering duration is used to characterize the playing process of the target video
  • the image quality selection strategy includes at least two content sub-strategies, and the content sub-strategies are used to represent the image quality files when playing the video to be played corresponding to the video category under different network conditions bit
  • the quality selection strategy including: according to the video content information of the target video, determine the target video category of the target video; The first playing duration and the buffering duration of the target video determine the content sub-strategy corresponding to the target video category.
  • determining the target image quality gear includes: acquiring the video to be played in the video information stream, and determining the to-be-played video The video category to be played of the video to be played; according to the video category to be played, determine the corresponding target content sub-strategy in the image quality selection strategy; determine the target image quality gear according to the target content sub-strategy and current network conditions .
  • a dynamic image quality video playback device including:
  • the receiving module is used to receive a switching instruction for the video information stream, and the switching instruction is used to switch the target video played in the video information stream;
  • a determining module configured to determine an image quality selection strategy according to the switching instruction and the video information of the target video corresponding to the switching instruction, and the image quality selection strategy is used to represent playing the video information stream under different network conditions The quality gear of the video to be played in ;
  • the playback module is configured to determine a target image quality gear according to the image quality selection strategy and current network conditions, and play the video to be played in the video information stream based on the target image quality gear.
  • the picture quality selection policy includes a high picture quality policy or a high fluency policy
  • the high picture quality policy is used to instruct the terminal device to use the first picture quality under the first network condition Playing the video to be played in the video information stream at a gear
  • the high fluency policy is used to instruct the terminal device to play the video to be played in the video information stream at a second quality gear under the first network condition
  • the code rate corresponding to the first image quality gear is greater than the code rate corresponding to the second image quality gear.
  • the video information includes a buffering duration
  • the buffering duration is used to characterize the video buffering duration of the target video during playback
  • the determining module is specifically used to: acquire The first playback duration of the target video before the switching instruction is triggered; when the buffer duration of the target video is greater than the buffer duration threshold, if the first playback duration is less than the playback duration threshold, the image quality selection strategy is For a high-fluency strategy, if the first playback duration is greater than the playback duration threshold, the quality selection strategy is a high-quality strategy.
  • the video information further includes resolution and/or frame rate
  • the determining module is further configured to: when the buffering duration of the target video is less than a buffering duration threshold, obtain The resolution and/or frame rate of the target video; if the resolution of the target video is greater than a preset resolution threshold, and/or the frame rate of the target video is greater than a preset resolution threshold, then the The image quality selection strategy described above is a high image quality strategy.
  • the first image quality gear includes at least two sub-quality image quality gears; the playback module determines the target image quality according to the image quality selection strategy and current network conditions When the gear is selected, it is specifically used for: if the image quality selection strategy is a high image quality strategy, then according to the current network conditions, determine at least two sub-quality gears; according to the resolution of the target video, and/ or the frame rate, and the at least two sub-quality levels, determine the target sub-quality level.
  • the determination module determines the image quality selection policy according to the switching instruction and the video information of the target video corresponding to the switching instruction, it is specifically configured to: During the video playing process, the starting moment of the video buffering of the target video; the triggering moment when the switching instruction is triggered; if the distance between the starting moment and the triggering moment is less than the first duration threshold, the The image quality selection strategy is the high fluency strategy.
  • the determining module is further configured to: obtain the end time of video buffering of the target video during the playing process of the target video; if the start time is equal to the end time If the distance is greater than the second duration threshold, the image quality selection strategy is a high image quality strategy.
  • the video information includes video content information and buffering duration
  • the video content information is used to characterize the video category of the video
  • the buffering duration is used to characterize the playing process of the target video
  • the image quality selection strategy includes at least two content sub-strategies, and the content sub-strategies are used to represent the image quality files when playing the video to be played corresponding to the video category under different network conditions bit
  • the determination module is specifically used to: determine the target video category of the target video according to the video content information of the target video; determine the target video according to the first playback duration and the buffer duration of the target video The content sub-policy for the target video category.
  • the playing module determines the target image quality gear according to the image quality selection strategy and the current network conditions, it is specifically configured to: obtain the waiting information in the video information stream Play the video, and determine the video category to be played of the video to be played; determine the corresponding target content sub-strategy in the image quality selection strategy according to the video category to be played; according to the target content sub-strategy and the current network Conditions to determine the target image quality gear.
  • an electronic device including: a processor, and a memory communicatively connected to the processor;
  • the memory stores computer-executable instructions
  • the processor executes the computer-executed instructions stored in the memory to implement the dynamic image quality video playback method described in the above first aspect and various possible designs of the first aspect.
  • a computer-readable storage medium stores computer-executable instructions, and when a processor executes the computer-executable instructions, Realize the dynamic quality video playback method described in the above first aspect and various possible designs of the first aspect.
  • an embodiment of the present disclosure provides a computer program product, including a computer program.
  • the computer program When the computer program is executed by a processor, it implements the dynamic image quality video playback method described in the above first aspect and various possible designs of the first aspect. .
  • an embodiment of the present disclosure provides a computer program.
  • the computer program When the computer program is executed by a processor, the method for playing a video with dynamic image quality as described in the above first aspect and various possible designs of the first aspect is implemented.
  • the method, device, electronic device, and storage medium for playing video with dynamic image quality receives a switching instruction for the video information stream, and the switching instruction is used to switch the target video played in the video information stream; according to the The switching instruction, and the video information of the target video corresponding to the switching instruction, determine the image quality selection strategy, and the image quality selection strategy is used to represent the performance of playing the video to be played in the video information stream under different network conditions.
  • Image quality gear according to the image quality selection strategy and current network conditions, determine the target image quality gear, and play the video to be played in the video information stream based on the target image quality gear.
  • the video quality selection strategy determined by the switching command can realize the automatic selection of the video quality that meets the user's needs, instead of relying only on the network speed As the only influencing factor of video quality, it satisfies users' personalized picture quality requirements under different network speed conditions, and improves users' viewing experience when watching videos in the video information stream.
  • the prompt information in response to receiving the active request from the user, may be sent to the user, for example, in the form of a pop-up window, and the prompt information may be presented in text in the pop-up window.
  • the pop-up window may also carry a selection control for the user to choose "agree” or “disagree” to provide personal information to the electronic device.

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Abstract

本公开实施例提供一种动态画质视频播放方法、装置、电子设备及存储介质，该方法通过接收针对视频信息流的切换指令，切换指令用于切换视频信息流中播放的目标视频；根据切换指令，以及切换指令对应的目标视频的视频信息，确定画质选择策略，画质选择策略用于表征在不同网络条件下播放视频信息流中的待播放视频时的画质档位；根据画质选择策略和当前的网络条件，确定目标画质档位，并基于目标画质档位播放视频信息流中的待播放视频。

Description

动态画质视频播放方法、装置、电子设备及存储介质
本公开要求于2021年9月7日提交中国专利局、申请号为202111045132.2、申请名称为“动态画质视频播放方法、装置、电子设备及存储介质”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开实施例涉及计算机技术领域，尤其涉及一种动态画质视频播放方法、装置、电子设备及存储介质。
背景技术
Feed流又称为信息流，是一种根据推荐信息和个性化数据，向用户推送信息的技术。基于feed流的视频播放广泛应用于短视频等视频类应用中。在该场景下，基于不同的网络条件、设备类型以及用户习惯等因素，不同用户对视频播放时的画质需求存在差异性。
相关技术中，对feed流中播放的视频的画质设置，通常是基于网络条件确定的，例如，通过表征网速与视频码率映射关系的“网速-码率映射模型”来确定视频在不同网速下的画质。
发明内容
本公开实施例提供一种动态画质视频播放方法、装置、电子设备及存储介质，以克服现有技术中无法满足用户在不同网络条件下的个性化的画质需求。
第一方面，本公开实施例提供一种动态画质视频播放方法，包括：
接收针对视频信息流的切换指令，所述切换指令用于切换视频信息流中播放的目标视频；根据所述切换指令，以及所述切换指令对应的目标视频的视频信息，确定画质选择策略，所述画质选择策略用于表征在不同网络条件下播放所述视频信息流中的待播放视频时的画质档位；根据所述画质选择策略和当前的网络条件，确定目标画质档位，并基于所述目标画质档位播放所述视频信息流中的待播放视频。
第二方面，本公开实施例提供一种动态画质视频播放装置，包括：
接收模块，用于接收针对视频信息流的切换指令，所述切换指令用于切换视频信息流中播放的目标视频；
确定模块，用于根据所述切换指令，以及所述切换指令对应的目标视频的视频信息，确定画质选择策略，所述画质选择策略用于表征在不同网络条件下播放所述视频信息流中的待播放视频时的画质档位；
播放模块，用于根据所述画质选择策略和当前的网络条件，确定目标画质档位，并基于所述目标画质档位播放所述视频信息流中的待播放视频。
第三方面，本公开实施例提供一种电子设备，包括：
处理器，以及与所述处理器通信连接的存储器；
所述存储器存储计算机执行指令；
所述处理器执行所述存储器存储的计算机执行指令，以实现如上第一方面以及第一方面各种可能的设计所述的动态画质视频播放方法。
第四方面，本公开实施例提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机执行指令，当处理器执行所述计算机执行指令时，实现如上第一方面以及第一方面各种可能的设计所述的动态画质视频播放方法。
第五方面，本公开实施例提供一种计算机程序产品，包括计算机程序，该计算机程序被处理器执行时实现如上第一方面以及第一方面各种可能的设计所述的动态画质视频播放方法。
第六方面，本公开实施例提供一种计算机程序，该计算机程序被处理器执行时实现如上第一方面以及第一方面各种可能的设计所述的动态画质视频播放方法。
附图说明
为了更清楚地说明本公开实施例或相关技术中的技术方案，下面将对实施例或相关技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本公开实施例提供的动态画质视频播放方法的一种应用场景图；
图2为本公开实施例提供的一种对视频应用进行自动画质设置的示意图；
图3为本公开实施例提供的动态画质视频播放方法的流程示意图一；
图4为本公开实施例提供的一种高画质策略和高流畅策略的示意图；
图5为本公开实施例提供的一种基于目标视频的缓冲时长确定画质选择策略的示意图；
图6为本公开实施例提供的另一种基于目标视频的缓冲时长确定画质选择策略的示意图；
图7为本公开实施例提供的动态画质视频播放方法流程示意图二；
图8为本公开实施例提供的动态画质视频播放装置的结构框图；
图9为本公开实施例提供的一种电子设备的结构示意图；
图10为本公开实施例提供的电子设备的硬件结构示意图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
下面对本公开实施例的应用场景进行解释：
图1为本公开实施例提供的动态画质视频播放方法的一种应用场景图，本公开实施例提供的动态画质视频播放方法，可以应用于基于视频信息流的视频播放场景中，更具体地，如图1所示，本实施例提供的方法的执行主体可以为终端设备，例如智能手机，终端设备内运行有基于信息流(Feed流)技术的视频应用(Application，APP)，在视频应用内，以视频信息流的方式播放视频。用户观看视频信息流中的目标视频(图中示为视频a)时，可以通过终 端设备的触摸屏，实施切换操作(图中示为向上滑动)，从而对目标视频进行切换，而播放视频信息流中排在目标视频之后的视频(图中示为视频b)。同时，终端设备与服务器通信连接，在终端设备内的视频应用播放目标视频时，终端设备通过访问服务器加载该目标视频的视频数据进行播放，或者对视频信息流中的待播放视频进行预加载。在该过程中，终端设备所加载(或预加载)的视频对应多个画质档位，画质越高，视频分辨率、帧率越高(也即码率越高)，相应的，则终端设备从服务器加载该视频时所消耗的流量和带宽越多。
在相关技术中的一种实现方式中，对视频信息流中播放的视频的画质设置，通常是基于网络质量确定的，即通过表征网络质量与画质档位映射关系的“网速-码率映射模型”来确定视频的画质。图2为本公开实施例提供的一种对视频应用进行自动画质设置的示意图，如图2所示，在网络条件较好时，视频应用以较高的分辨率播放视频，例如图2中所示的“超清”档位；而当网络条件较差时(如图中所示，终端设备的通信信号由5G信号切换为3G信号)，视频应用以较低的分辨率播放视频，例如图2中所示的“普清”档位，从而优先保证视频播放的流畅度，减少卡顿，但同时可能造成视频分辨率下降的问题。然而，由于用户对视频画质的需求不同，通过统一的“网速-码率映射模型”来设置视频的画质，无法满足用户在不同的网络条件下的个性化的画质需求，影响用户的视频观看体验。
在相关技术中的另一种实现方式中，视频应用是基于用户固定设置的视频档位，例如用户将视频分辨率手动设置为“超清”档位，从而无论网络条件如何，始终使视频以“超清”档位的分辨率进行播放，优先保证视频的清晰度，提高画质，但同时可能造成视频卡顿的问题。
因此，对于视频的观看体验，实际上是由视频码率(视频分辨率、视频帧率)和视频流畅度两个维度的因素决定的。而对于不同的用户，对于视频码率和视频流畅度的重视程度是不同的，例如有的用户更重视视频码率，而对视频的卡顿不敏感；而有的用户则更重视视频的流畅度，对视频卡顿敏感，而对视频的码率不敏感，这实际上是至少两种不同的画质选择策略，用于确定不同的网络条件下的视频画质。不同的用户，会根据自身的个性化需求，选择不同的画质选择策略。
基于以上原因，相关技术中仅通过网络条件确定视频画质的技术方案，无法实现上述不同的画质选择策略，只能通过一种策略，例如“网速-码率映射关系”来确定固定的视频画质，而无法满足用户在一种网速条件下不同的画质选择偏好，影响用户的视频观看体验。
因此，当前亟需一种能够自动预测用户的画质选择策略(画质偏好)，并基于该画质选择策略，对播放视频信息流中的视频进行播放的方案，来满足不同的用户在不同网络条件下的个性化的画质需求。对此，本公开实施例提供一种动态画质视频播放方法以解决上述问题。
图3为本公开实施例提供的动态画质视频播放方法的流程示意图一，参考图3所示，本实施例的方法可以应用在终端设备中，该动态画质视频播放方法包括：
步骤S101：接收针对视频信息流的切换指令，切换指令用于切换视频信息流中播放的目标视频。
示例性地，视频信息流是基于推荐信息生成的，表征终端设备正在播放的视频以及待播放的视频的集合的信息，视频信息流在终端设备一侧表现为可连续播放的多个视频，其中，终端设备当前播放的视频为视频信息流中的目标视频，而目标视频之后播放的视频，为视频信息流中的待播放视频。
进一步地，终端设备具有触摸屏，在终端设备通过触摸屏播放视频信息流中的视频的过程中，当用户通过触摸屏实施切换操作时，终端设备接收到对应的切换指令并进行响应，从而对当前播放的视频，即目标视频，进行切换，实现对视频信息流中的下一个(或上一个)视频进行播放。其中，示例性地，用户通过触摸屏实施切换操作例如为上下滑动触摸屏、点击触摸屏中“下一个”虚拟按钮等。
步骤S102：根据切换指令，以及切换指令对应的目标视频的视频信息，确定画质选择策略，画质选择策略用于表征在不同网络条件下播放视频信息流中的待播放视频时的画质档位。
示例性地，得到切换操作对应的切换指令后，该切换指令用于指示终端设备切换终端设备当前播放的目标视频，根据该切换指令和目标视频的视频信息，可以确定表征用户画质偏好的画质选择策略。其中，目标视频的视频信息为用于表征目标视频的播放情况的信息。更具体地，例如，目标视频在播放过程中进行视频缓冲的时长、目标视频在触发切换指令前的播放时长等。用户在观看视频的过程中，会根据目标视频的播放情况，例如是否发生视频缓冲(即卡顿)，相应的进行切换操作。对于卡顿敏感的用户，在视频发生卡顿时，会快速切换视频；反之，对于卡顿不敏感用户，则不会快速切换视频。因此，根据目标视频的视频信息，可以确定视频的卡顿情况进而确定当前的网络条件，并基于用户对其做出的反应，即切换指令，判断用户在当前网络条件所偏好的画质档位，也即，画质选择策略。具体地，例如，在网络条件正常的情况下，选择高画质的档位，而在网络条件差的情况下，选择低画质档位；或者，在网络条件正常的情况下，选择高画质的档位，而在网络条件正常的情况下，依旧选择高画质的档位；再或者，在网络条件正常的情况下，直接选择低画质档位等。
在一种可能的实现方式中，画质选择策略包括高画质策略或高流畅策略，高画质策略用于指示终端设备在第一网络条件下，以第一画质档位播放视频信息流中的待播放视频，高流畅策略用于指示终端设备在第一网络条件下，以第二画质档位播放视频信息流中的待播放视频，第一画质档位对应的码率大于第二画质档位对应的码率。具体地，第一网络条件包括一个或多个下载速度，终端设备在第一网络条件下，即终端设备在处于某个或某几个下载速度时。高画质策略可以为一种表征“下载速度-画质档位”的映射关系曲线；而高流畅策略可以为另一种表征“下载速度-画质档位”的映射关系曲线。在不同的网络条件下，高画质策略和高流畅策略所对应的画质档位不同。图4为本公开实施例提供的一种高画质策略和高流畅策略的示意图，如图4所示，示例性地，在下载速度分别为100kbps(千比特每秒)、500kbps和1000kbps时，高画质策略对应的画质档位分别为“B档”、“C档”、“C档”，高流畅策略对应的画质档位分别为“A档”、“A档”、“A档”。其中，示例性地，“C档”对应的画质档位可以为“超清”，“B档”对应的画质档位可以为“高清”，“A档”对应的画质档位可以为“普清”。
可见，第一画质档位与第二画质档位相比，第一画质档位对应的是高码率的视频，第二画质档位对应的是低码率的视频。根据切换指令，以及切换指令对应的目标视频的视频信息，可以预测实施切换指令对应的切换操作的用户的画质选择策略。该通过用户的操作行为确定的画质选择策略，与用户的画质偏好相匹配，因此，基于该画质选择策略对视频信息流中的待播放视频进行加载和播放，能够满足用户的画质需求。
下面以一个具体的实施例对步骤S102的实现方式进行介绍：
示例性地，视频信息包括缓冲时长，缓冲时长用于表征目标视频在播放过程中进行视频缓冲的时长。确定画质选择策略，包括：
获取切换指令触发前目标视频的第一播放时长；在目标视频的缓冲时长大于缓冲时长阈值时，若第一播放时长小于播放时长阈值，则画质选择策略为高流畅策略；若第一播放时长大于播放时长阈值，则画质选择策略为高画质策略。
在在目标视频的缓冲时长大于缓冲时长阈值时，说明在目标视频的播放过程中，出现缓冲时间过长的问题(即卡顿)。此种情况下，若第一播放时长小于播放时长阈值，说明用户在发生卡顿后的一个较短的时间内即切换了目标视频，进而说明用户对卡顿敏感，因此，预测画质选择策略为高流畅策略；反之，若第一播放时长大于播放时长阈值，说明用户在发生卡顿后的一个较长的时间后才切换了目标视频，或者始终未切换目标视频，进而说明用户对卡顿不敏感，因此，预测画质选择策略为高画质策略。
进一步地，在一种可能的实现方式中，视频信息还包括分辨率，和/或帧率。
在目标视频的缓冲时长小于缓冲时长阈值时，获取目标视频的分辨率，和/或帧率，若目标视频的分辨率大于预设的分辨率阈值，和/或目标视频的帧率大于预设的分辨率阈值，则画质选择策略为高画质策略；若目标视频的分辨率小于预设的分辨率阈值，和/或目标视频的帧率小于预设的分辨率阈值，则画质选择策略为高流畅策略。
示例性地，分辨率是表征视频清晰度的参数，分辨率越高，则视频清晰度越高；而帧率是表征视频流畅度的参数，帧率越高，则单位时间内组成视频的视频帧越多，因此，视频越流畅。同时，视频的分辨率、帧率越高，意味着视频的码率越高，也即加载视频所消耗的带宽和流量越多。
在目标视频的缓冲时长小于缓冲时长阈值时，说明目标视频未发生明显的卡顿，若目标视频的分辨率大于预设的分辨率阈值，和/或目标视频的帧率大于预设的分辨率阈值，说明用户通过预设参数，将播放视频时的分辨率，和/或帧率设置为一个较高的档位，也即，说明用户倾向于以高画质、高码率的方式播放视频，此种情况下，画质选择策略为高画质策略。
本实施例步骤中，在目标视频的缓冲时长小于缓冲时长阈值的情况下，通过获取目标视频的分辨率、帧率等参数，预测画质选择策略，进一步地提高了对用户画质偏好的判断准确性，增加应用场景的覆盖。
一种可能的实现方式中，高画质策略对应的一种网络条件下，第一画质档位中包括至少两个子画质档位，即一种网络条件下，高画质策略对应两个及以上的子画质档位，例如“超清”、“高清”，在一种可能的实现方式中，在基于画质选择策略和当前的网络条件，确定目标画质档位时，从多个子画质档位中，随机选择一种。而在另一种可能的实现方式中，根据目标视频的分辨率，和/或帧率，确定第一画质档位中的目标子档位。例如，画质调节的档位包括4种，包括“蓝光”、“超清”、“高清”、“普清”，其中，“蓝光”、“超清”、“高清”为第一画质档位中的三个子档位，获取目标视频的分辨率，基于目标视频的分辨率，选择与其分辨率最接近的档位，例如为“超清”作为第一画质档位中的目标子档位。在后续步骤中，将该目标子档位作为目标画质档位，对视频信息流中的待播放视频进行加载和播放。
本实施例步骤中，通过获取目标视频的分辨率和/或帧率，从包含多个子档位的第一画质档位中，确定出于目标视频相匹配的目标子档位，从而进一步的提高画质档位的判断准确性，提高与用户画质偏好的匹配程度，提高用户观看体验。
其中，缓冲时长阈值、播放时长阈值、分辨率阈值、帧率阈值可以根据具体的需要进行设置，此处不进行具体的限定。
图5为本公开实施例提供的一种基于目标视频的缓冲时长确定画质选择策略的示意图，如图5所示，目标视频沿播放方向播放，在终端设备接收到针对目标视频的切换指令后，获取目标视频的总缓冲时长，其中，具体地，在接收到切换指令之前，目标视频总共缓冲了三次，分别对应A1、A2和A3三个子缓冲区间，总缓冲时长即为A1、A2和A3对应的时长之和。根据总缓冲时长和缓冲时长阈值进行比较，确定目标视频是否卡顿。具体地，若该总缓冲时长大于缓冲时长阈值，则确定该目标视频卡顿，若总缓冲时长小于或等于缓冲时长阈值，确定该目标视频不卡顿。之后，针对卡顿和不卡顿的情况，分别基于目标视频的第一播放时长和目标视频的分辨率，确定对应的画质选择策略。
本实施例步骤中，基于获取目标视频的总缓冲时长，判断目标视频的整体卡顿情况，并在此基础上，基于用户对整体卡顿情况的反应(切换指令)，判断视频画质选择策略，实现了对用户画质偏好的预测，避免了用户手动设置造成的操作步骤增加，影响用户的视频观看体验的问题。
在另一种可能的实现方式中，终端设备还可以根据用户对目标视频发生一次卡顿时的反应(切换指令)，判断视频画质选择策略。图6为本公开实施例提供的另一种基于目标视频的缓冲时长确定画质选择策略的示意图，如图6所示，在终端设备接收到针对目标视频的切换指令后，获取目标视频播放过程中，目标视频发生视频缓冲的缓冲区间(图中示为C)的起始时刻、结束时刻(如果存在)和切换指令触发时的触发时刻，此时存在两种情况，若触发时刻发生在结束时刻之后，则存在结束时刻；若触发时刻发生在结束时刻之前，则不存在结束时刻。进而，若起始时刻与触发时刻的间距(图中示为间距a)小于第一时长阈值，则画质选择策略为高流畅策略；若起始时刻与结束时刻的间距(图中示为间距b)大于第二时长阈值，则画质选择策略为高画质策略。
本实施例步骤中，当起始时刻与触发时刻的间距小于第一时长阈值，说明用户在发生卡顿时，较快的切换了视频，预测用户对卡顿较为敏感，因此，将画质选择策略确定为高流畅策略，高流畅策略在不同的网络条件下，均对应较低的画质档位，因此能够有效提高视频流畅度；若起始时刻与结束时刻的间距大于第二时长阈值，说明用户等待了整个视频缓冲的过程，且该过程较长，预测用户对卡顿不敏感，而更偏好高画质的视频，因此，将画质选择策略确定为高画质策略，高画质策略在不同的网络条件下，均对应较高的画质档位，因此能够有效提高视频的画质质量，提高清晰度。通过用户对视频缓存发生后的反应，确定用户的画质选择策略，可以进一步的预测用户偏好的准确性，提高用户的观看体验。
其中，需要说明的是，图5和图6所对应的确定画质选择策略的方法，可以单独使用或联合使用，在联合使用时，可以根据预设配置或者网络条件确定两种方法的优先级，此处不再赘述。
步骤S103：根据画质选择策略和当前的网络条件，确定目标画质档位，并基于目标画质档位播放视频信息流中的待播放视频。
示例性地，在确定画质选择策略后，即确定出了在不同网络条件下所适用的画质档位，例如，在下载速度为100kbps以下、100kbps-500kbps和500kbps-2Mbps时，分别对应的画质档位为“普清”、“高清”、“超清”。之后，终端设备通过测试当前的网络下载速度，再基于画质选择策略，即可确定对应的模板画质档位，例如当前的下载速度为300kbps，则基于上述画质选择策略，可确定目标画质档位为“高清”。进而，基于该目标画质档位，对后续视频信息 流中的待播放视频进行预加载和播放，使该待播放视频的画质，能够与用户需求的画质偏好相匹配，从而到达用户理想的观看体验。其中，根据画质档位在服务器端匹配对应的数据文件，以及数据加载、播放过程，为本领域技术人员知晓的相关技术，此处不再赘述。
在本实施例中，通过接收针对视频信息流的切换指令，切换指令用于切换视频信息流中播放的目标视频；根据切换指令，以及切换指令对应的目标视频的视频信息，确定画质选择策略，画质选择策略用于表征在不同网络条件下播放视频信息流中的待播放视频时的画质档位；根据画质选择策略和当前的网络条件，确定目标画质档位，并基于目标画质档位播放视频信息流中的待播放视频。由于用户对视频信息流的切换指令，能够表现出用户对视频画质的需求，通过切换指令确定的视频画质选择策略，可以实现满足用户需求的视频画质的自动选择，而不仅依靠网速作为视频画质的唯一影响因素，满足用户在不同网速条件下的个性化的画质需求，提高用户观看视频信息流中的视频时的观看体验。
图7为本公开实施例提供的动态画质视频播放方法流程示意图二。本实施例中在图3所示实施例的基础上，增加了基于目标视频的视频内容信息确定画质选择策略的步骤，其中，视频信息包括视频内容信息和缓冲时长，视频内容信息用于表征视频的视频类别，缓冲时长用于表征目标视频在播放过程中进行视频缓冲的时长；画质选择策略包括至少两个内容子策略，内容子策略用于表征在不同网络条件下，播放视频类别对应的待播放视频时的画质档位。该动态画质视频播放方法包括：
步骤S201：接收针对视频信息流的切换指令，切换指令用于切换视频信息流中播放的目标视频。
步骤S202：根据目标视频的视频内容信息，确定目标视频的目标视频类别。
示例性地，视频内容信息是表征目标视频的内容的类别的信息，例如，“教学视频”、“搞笑视频”、“新闻视频”等。视频内容信息可以包括视频类别标志，不同的视频类别标识，分别对应一种视频类别。终端设备在接收针对视频信息流的切换指令时，获取预存在本地或服务器的目标视频的视频内容信息，进而可以确定目标视频对应的目标类别。
步骤S203：根据目标视频的第一播放时长，以及缓冲时长，确定目标视频类别对应的内容子策略。
对于不同视频类型的视频，不同用户对其的画质偏好是不同的，具体地，例如一些注重表现力的视频，如“电影剪辑”、“创意视频”等，用户对此类视频，更倾向于观看高清晰度的影片；而对于注重内容的视频，如“新闻视频”、“搞笑视频”，则用户更倾向于流畅度，对清晰度不敏感。这种对不同视频类型的视频的画质偏好，具有个性化的特性，即各用户之间存在差异。因此，对于不同视频类型的视频，为用户确定对应的内容子策略，可以进一步的提高用户偏好的匹配程度。
具体地，目标视频的第一播放时长，是指切换指令触发前，目标视频的播放时长，也即用户观看目标视频的时长。第一播放时长表现了用户对视频卡顿的偏好，在目标视频缓冲时长大于预设时长时，若第一播放时长较长，说明用户对该视频类型的视频卡顿不敏感，反之，则表示用户对该视频类型的视频卡顿敏感。
因此，根据目标视频的第一播放时长和缓冲时长，确定目标视频类别对应的内容子策略的实现方式，例如为：在目标视频的缓冲时长大于缓冲时长阈值时，若第一播放时长小于播 放时长阈值，则确定目标视频类别对应的内容子策略为高流畅策略，若第一播放时长大于播放时长阈值，则确定目标视频类别对应的内容子策略为高画质策略。
进一步地，示例性地，目标视频可以包括多个，每一目标视频均对应一个视频内容信息。相应的，切换指令也包括多个，每一切换指令与每一目标视频一一对应。具体地，用户通过终端设备的触摸屏，多次实施切换操作，对视频信息流中当前播放的目标视频进行切换，终端设备根据每次切换操作对应的目标视频，分别获取各目标视频的视频内容信息，即第一播放时长和缓冲时长，并根据第一播放时长和缓冲时长，确定各目标视频的目标视频类别对应的内容子策略，进而生成画质选择策略。
步骤S204：获取视频信息流中的待播放视频，并确定待播放视频的待播放视频类别。
步骤S205：根据待播放视频类别，确定画质选择策略中对应的目标内容子策略。
步骤S206：根据目标内容子策略和当前的网络条件，确定目标画质档位，并基于目标画质档位播放视频信息流中的待播放视频。
进一步地，在确定包括多个内容子策略的画质选择策略后，通过获取视频信息流中的待播放视频，并确定待播放视频的类别，基于待播放视频的视频类别，选择对应的内容子策略，即目标内容子策略。之后，基于目标内容子策略所表征的网络条件与目标画质档位的映射关系，确定在当前的网络条件下所匹配的目标画质档位，并以该目标画质档位进行后续的视频播放，以实现特定视频类型、特定画质选择策略、特定网络条件的动态画质设置，提高视频画质与用户画质偏好的匹配度。
其中，本实施例提供的动态画质视频播放方法，是在图3所示实施例基础上实现的技术方案，即在图3所示实施例的基础上，增加了视频类别维度确定画质选择策略，因此，在本实施例中确定画质选择策略的步骤中，在确定目标视频的视频类型后，基于特定视频类型的目标视频确定画质选择策略的实现方法及技术效果，与图3所示实施例中确定画质选择策略的步骤类似，可以参考图3所示实施例中的描述，此处不再赘述。
本实施例步骤中，通过多次获取切换指令，以及切换指令对应的目标视频的视频信息，构建用于表征在不同网络条件下，播放各视频类别对应的待播放视频时的画质档位的画质选择策略，从而在播放不同视频类别的待播放视频时，能够基于不同的画质选择策略进行处理，实现了对不同类型视频的动态画质设置，而又由于对不同类型的视频的动态画质设置是基于用户操作确定的，能够匹配用户的画质偏好，因此，进一步的提高了视频画质与用户画质偏好的匹配度，提高用户的观看体验。
本实施例中，步骤S201的实现方式与本公开图3所示实施例中的步骤S101的实现方式相同，在此不再一一赘述。
对应于上文实施例的动态画质视频播放方法，图8为本公开实施例提供的动态画质视频播放装置的结构框图。为了便于说明，仅示出了与本公开实施例相关的部分。参照图8，动态画质视频播放装置3，包括：
接收模块31，用于接收针对视频信息流的切换指令，切换指令用于切换视频信息流中播放的目标视频；
确定模块32，用于根据切换指令，以及切换指令对应的目标视频的视频信息，确定画质选择策略，画质选择策略用于表征在不同网络条件下播放视频信息流中的待播放视频时的画质档位；
播放模块33，用于根据画质选择策略和当前的网络条件，确定目标画质档位，并基于目标画质档位播放视频信息流中的待播放视频。
在本公开的一个实施例中，画质选择策略包括高画质策略或高流畅策略，高画质策略用于指示终端设备在第一网络条件下，以第一画质档位播放视频信息流中的待播放视频，高流畅策略用于指示终端设备在第一网络条件下，以第二画质档位播放视频信息流中的待播放视频，第一画质档位对应的码率大于第二画质档位对应的码率。
在本公开的一个实施例中，视频信息包括缓冲时长，缓冲时长用于表征目标视频在播放过程中进行视频缓冲的时长；确定模块32，具体用于：获取切换指令触发前目标视频的第一播放时长；在目标视频的缓冲时长大于缓冲时长阈值时，若第一播放时长小于播放时长阈值，则画质选择策略为高流畅策略，若第一播放时长大于播放时长阈值，则画质选择策略为高画质策略。
在本公开的一个实施例中，视频信息还包括分辨率，和/或帧率，确定模块32，还用于：在目标视频的缓冲时长小于缓冲时长阈值时，获取目标视频的分辨率，和/或帧率；若目标视频的分辨率大于预设的分辨率阈值，和/或目标视频的帧率大于预设的分辨率阈值，则画质选择策略为高画质策略。
在本公开的一个实施例中，第一画质档位包括至少两个子画质档位；播放模块33在根据画质选择策略和当前的网络条件，确定目标画质档位时，具体用于：若画质选择策略为高画质策略，则根据当前的网络条件，确定至少两个子画质档位；根据目标视频的分辨率，和/或帧率，以及至少两个子画质档位，确定目标子画质档位。
在本公开的一个实施例中，确定模块32在根据切换指令，以及切换指令对应的目标视频的视频信息，确定画质选择策略时，具体用于：获取目标视频播放过程中，目标视频发生视频缓冲的起始时刻；获取切换指令触发时的触发时刻；若起始时刻与触发时刻的间距小于第一时长阈值，则画质选择策略为高流畅策略。
在本公开的一个实施例中，确定模块32，还用于：获取目标视频播放过程中，目标视频发生视频缓冲的结束时刻；若起始时刻与结束时刻的间距大于第二时长阈值，则画质选择策略为高画质策略。
在本公开的一个实施例中，视频信息包括视频内容信息和缓冲时长，视频内容信息用于表征视频的视频类别，缓冲时长用于表征目标视频在播放过程中进行视频缓冲的时长；画质选择策略包括至少两个内容子策略，内容子策略用于表征在不同网络条件下，播放视频类别对应的待播放视频时的画质档位；确定模块32，具体用于：根据目标视频的视频内容信息，确定目标视频的目标视频类别；根据目标视频的第一播放时长和缓冲时长，确定目标视频类别对应的内容子策略。
在本公开的一个实施例中，播放模块33在根据画质选择策略和当前的网络条件，确定目标画质档位时，具体用于：获取视频信息流中的待播放视频，并确定待播放视频的待播放视频类别；根据待播放视频类别，确定画质选择策略中对应的目标内容子策略；根据目标内容子策略和当前的网络条件，确定目标画质档位。
其中，接收模块31、确定模块32和播放模块33依次连接。本实施例提供的动态画质视频播放装置3可以执行上述方法实施例的技术方案，其实现原理和技术效果类似，本实施例此处不再赘述。
本实施例提供的装置，可用于执行上述方法实施例的技术方案，其实现原理和技术效果类似，本实施例此处不再赘述。
图9为本公开实施例提供的一种电子设备的结构示意图，如图9所示，该电子设备4包括：
处理器41，以及与处理器41通信连接的存储器42；
存储器42存储计算机执行指令；
处理器41执行存储器42存储的计算机执行指令，以实现如图3-图7所示实施例中的动态画质视频播放方法。
其中，可选地，处理器41和存储器42通过总线43连接。
相关说明可以对应参见图3-图7所对应的实施例中的步骤所对应的相关描述和效果进行理解，此处不做过多赘述。
参考图10，其示出了适于用来实现本公开实施例的电子设备900的结构示意图，该电子设备900可以为终端设备或服务器。其中，终端设备可以包括但不限于诸如移动电话、笔记本电脑、数字广播接收器、个人数字助理(Personal Digital Assistant，简称PDA)、平板电脑(Portable Android Device，简称PAD)、便携式多媒体播放器(Portable Media Player，简称PMP)、车载终端(例如车载导航终端)等等的移动终端以及诸如数字TV、台式计算机等等的固定终端。图10示出的电子设备仅仅是一个示例，不应对本公开实施例的功能和使用范围带来任何限制。
如图10所示，电子设备900可以包括处理装置(例如中央处理器、图形处理器等)901，其可以根据存储在只读存储器(Read Only Memory，简称ROM)902中的程序或者从存储装置908加载到随机访问存储器(Random Access Memory，简称RAM)903中的程序而执行各种适当的动作和处理。在RAM 903中，还存储有电子设备900操作所需的各种程序和数据。处理装置901、ROM 902以及RAM 903通过总线904彼此相连。输入/输出(I/O)接口905也连接至总线904。
通常，以下装置可以连接至I/O接口905：包括例如触摸屏、触摸板、键盘、鼠标、摄像头、麦克风、加速度计、陀螺仪等的输入装置906；包括例如液晶显示器(Liquid Crystal Display，简称LCD)、扬声器、振动器等的输出装置907；包括例如磁带、硬盘等的存储装置908；以及通信装置909。通信装置909可以允许电子设备900与其他设备进行无线或有线通信以交换数据。虽然图10示出了具有各种装置的电子设备900，但是应理解的是，并不要求实施或具备所有示出的装置。可以替代地实施或具备更多或更少的装置。
特别地，根据本公开的实施例，上文参考流程图描述的过程可以被实现为计算机软件程序。例如，本公开的实施例包括一种计算机程序产品，其包括承载在计算机可读介质上的计算机程序，该计算机程序包含用于执行流程图所示的方法的程序代码。在这样的实施例中，该计算机程序可以通过通信装置909从网络上被下载和安装，或者从存储装置908被安装，或者从ROM 902被安装。在该计算机程序被处理装置901执行时，执行本公开实施例的方法中限定的上述功能。
需要说明的是，本公开上述的计算机可读介质可以是计算机可读信号介质或者计算机可读存储介质或者是上述两者的任意组合。计算机可读存储介质例如可以是——但不限于——电、磁、光、电磁、红外线、或半导体的系统、装置或器件，或者任意以上的组合。计算机 可读存储介质的更具体的例子可以包括但不限于：具有一个或多个导线的电连接、便携式计算机磁盘、硬盘、随机访问存储器(RAM)、只读存储器(ROM)、可擦式可编程只读存储器(Erasable Programmable Read Only Memory，简称EPROM或闪存)、光纤、便携式紧凑磁盘只读存储器(Compact Disc Read-Only Memory，简称CD-ROM)、光存储器件、磁存储器件、或者上述的任意合适的组合。在本公开中，计算机可读存储介质可以是任何包含或存储程序的有形介质，该程序可以被指令执行系统、装置或者器件使用或者与其结合使用。而在本公开中，计算机可读信号介质可以包括在基带中或者作为载波一部分传播的数据信号，其中承载了计算机可读的程序代码。这种传播的数据信号可以采用多种形式，包括但不限于电磁信号、光信号或上述的任意合适的组合。计算机可读信号介质还可以是计算机可读存储介质以外的任何计算机可读介质，该计算机可读信号介质可以发送、传播或者传输用于由指令执行系统、装置或者器件使用或者与其结合使用的程序。计算机可读介质上包含的程序代码可以用任何适当的介质传输，包括但不限于：电线、光缆、RF(射频)等等，或者上述的任意合适的组合。
上述计算机可读介质可以是上述电子设备中所包含的；也可以是单独存在，而未装配入该电子设备中。
上述计算机可读介质承载有一个或者多个程序，当上述一个或者多个程序被该电子设备执行时，使得该电子设备执行上述实施例所示的方法。
可以以一种或多种程序设计语言或其组合来编写用于执行本公开的操作的计算机程序代码，上述程序设计语言包括面向对象的程序设计语言—诸如Java、Smalltalk、C++，还包括常规的过程式程序设计语言—诸如“C”语言或类似的程序设计语言。程序代码可以完全地在用户计算机上执行、部分地在用户计算机上执行、作为一个独立的软件包执行、部分在用户计算机上部分在远程计算机上执行、或者完全在远程计算机或服务器上执行。在涉及远程计算机的情形中，远程计算机可以通过任意种类的网络——包括局域网(Local Area Network，简称LAN)或广域网(Wide Area Network，简称WAN)—连接到用户计算机，或者，可以连接到外部计算机(例如利用因特网服务提供商来通过因特网连接)。
附图中的流程图和框图，图示了按照本公开各种实施例的系统、方法和计算机程序产品的可能实现的体系架构、功能和操作。在这点上，流程图或框图中的每个方框可以代表一个模块、程序段、或代码的一部分，该模块、程序段、或代码的一部分包含一个或多个用于实现规定的逻辑功能的可执行指令。也应当注意，在有些作为替换的实现中，方框中所标注的功能也可以以不同于附图中所标注的顺序发生。例如，两个接连地表示的方框实际上可以基本并行地执行，它们有时也可以按相反的顺序执行，这依所涉及的功能而定。也要注意的是，框图和/或流程图中的每个方框、以及框图和/或流程图中的方框的组合，可以用执行规定的功能或操作的专用的基于硬件的系统来实现，或者可以用专用硬件与计算机指令的组合来实现。
描述于本公开实施例中所涉及到的单元可以通过软件的方式实现，也可以通过硬件的方式来实现。其中，单元的名称在某种情况下并不构成对该单元本身的限定，例如，第一获取单元还可以被描述为“获取至少两个网际协议地址的单元”。
本文中以上描述的功能可以至少部分地由一个或多个硬件逻辑部件来执行。例如，非限制性地，可以使用的示范类型的硬件逻辑部件包括：现场可编程门阵列(Field Programmable Gate Array，简称FPGA)、专用集成电路(Application Specific Integrated Circuit，简称ASIC)、 专用标准产品(Application Specific Standard Parts，简称ASSP)、片上系统(System on Chip，简称SOC)、复杂可编程逻辑设备(Complex Programmable Logic Device，简称CPLD)等等。
在本公开的上下文中，机器可读介质可以是有形的介质，其可以包含或存储以供指令执行系统、装置或设备使用或与指令执行系统、装置或设备结合地使用的程序。机器可读介质可以是机器可读信号介质或机器可读储存介质。机器可读介质可以包括但不限于电子的、磁性的、光学的、电磁的、红外的、或半导体系统、装置或设备，或者上述内容的任何合适组合。机器可读存储介质的更具体示例会包括基于一个或多个线的电气连接、便携式计算机盘、硬盘、随机存取存储器(RAM)、只读存储器(ROM)、可擦除可编程只读存储器(EPROM或快闪存储器)、光纤、便捷式紧凑盘只读存储器(CD-ROM)、光学储存设备、磁储存设备、或上述内容的任何合适组合。
第一方面，根据本公开的一个或多个实施例，提供了一种动态画质视频播放方法，包括：
接收针对视频信息流的切换指令，所述切换指令用于切换视频信息流中播放的目标视频；根据所述切换指令，以及所述切换指令对应的目标视频的视频信息，确定画质选择策略，所述画质选择策略用于表征在不同网络条件下播放所述视频信息流中的待播放视频时的画质档位；根据所述画质选择策略和当前的网络条件，确定目标画质档位，并基于所述目标画质档位播放所述视频信息流中的待播放视频。
根据本公开的一个或多个实施例，所述画质选择策略包括高画质策略或高流畅策略，所述高画质策略用于指示终端设备在第一网络条件下，以第一画质档位播放所述视频信息流中的待播放视频，所述高流畅策略用于指示终端设备在第一网络条件下，以第二画质档位播放所述视频信息流中的待播放视频，所述第一画质档位对应的码率大于所述第二画质档位对应的码率。
根据本公开的一个或多个实施例，所述视频信息包括缓冲时长，所述缓冲时长用于表征所述目标视频在播放过程中进行视频缓冲的时长；根据所述切换指令，以及所述切换指令对应的目标视频的视频信息，确定画质选择策略，包括：获取所述切换指令触发前所述目标视频的第一播放时长；在所述目标视频的缓冲时长大于缓冲时长阈值时，若所述第一播放时长小于播放时长阈值，则所述画质选择策略为高流畅策略，若所述第一播放时长大于所述播放时长阈值，则所述画质选择策略为高画质策略。
根据本公开的一个或多个实施例，所述视频信息还包括分辨率，和/或帧率，所述方法还包括：在所述目标视频的缓冲时长小于缓冲时长阈值时，获取所述目标视频的分辨率，和/或帧率；若所述目标视频的分辨率大于预设的分辨率阈值，和/或所述目标视频的帧率大于预设的分辨率阈值，则所述画质选择策略为高画质策略。
根据本公开的一个或多个实施例，所述第一画质档位包括至少两个子画质档位；根据所述画质选择策略和当前的网络条件，确定目标画质档位，包括：若所述画质选择策略为高画质策略，则根据所述当前的网络条件，确定至少两个子画质档位；根据所述目标视频的分辨率，和/或帧率，以及所述至少两个子画质档位，确定目标子画质档位。
根据本公开的一个或多个实施例，根据所述切换指令，以及所述切换指令对应的目标视频的视频信息，确定画质选择策略，包括：获取所述目标视频播放过程中，所述目标视频发生视频缓冲的起始时刻；获取所述切换指令触发时的触发时刻；若所述起始时刻与所述触发时刻的间距小于第一时长阈值，则所述画质选择策略为高流畅策略。
根据本公开的一个或多个实施例，所述方法还包括：获取目标视频播放过程中，所述目标视频发生视频缓冲的结束时刻；若所述起始时刻与所述结束时刻的间距大于第二时长阈值，则所述画质选择策略为高画质策略。
根据本公开的一个或多个实施例，所述视频信息包括视频内容信息和缓冲时长，所述视频内容信息用于表征视频的视频类别，所述缓冲时长用于表征所述目标视频在播放过程中进行视频缓冲的时长；所述画质选择策略包括至少两个内容子策略，所述内容子策略用于表征在不同网络条件下，播放所述视频类别对应的待播放视频时的画质档位；根据所述切换指令，以及所述切换指令对应的目标视频的视频信息，确定画质选择策略，包括：根据所述目标视频的视频内容信息，确定所述目标视频的目标视频类别；根据所述目标视频的第一播放时长和所述缓冲时长，确定所述目标视频类别对应的内容子策略。
根据本公开的一个或多个实施例，根据所述画质选择策略和当前的网络条件，确定目标画质档位，包括：获取所述视频信息流中的待播放视频，并确定所述待播放视频的待播放视频类别；根据所述待播放视频类别，确定所述画质选择策略中对应的目标内容子策略；根据所述目标内容子策略和当前的网络条件，确定目标画质档位。
第二方面，根据本公开的一个或多个实施例，提供了一种动态画质视频播放装置，包括：
接收模块，用于接收针对视频信息流的切换指令，所述切换指令用于切换视频信息流中播放的目标视频；
确定模块，用于根据所述切换指令，以及所述切换指令对应的目标视频的视频信息，确定画质选择策略，所述画质选择策略用于表征在不同网络条件下播放所述视频信息流中的待播放视频时的画质档位；
播放模块，用于根据所述画质选择策略和当前的网络条件，确定目标画质档位，并基于所述目标画质档位播放所述视频信息流中的待播放视频。
根据本公开的一个或多个实施例，所述画质选择策略包括高画质策略或高流畅策略，所述高画质策略用于指示终端设备在第一网络条件下，以第一画质档位播放所述视频信息流中的待播放视频，所述高流畅策略用于指示终端设备在第一网络条件下，以第二画质档位播放所述视频信息流中的待播放视频，所述第一画质档位对应的码率大于所述第二画质档位对应的码率。
根据本公开的一个或多个实施例，所述视频信息包括缓冲时长，所述缓冲时长用于表征所述目标视频在播放过程中进行视频缓冲的时长；所述确定模块，具体用于：获取所述切换指令触发前所述目标视频的第一播放时长；在所述目标视频的缓冲时长大于缓冲时长阈值时，若所述第一播放时长小于播放时长阈值，则所述画质选择策略为高流畅策略，若所述第一播放时长大于所述播放时长阈值，则所述画质选择策略为高画质策略。
根据本公开的一个或多个实施例，所述视频信息还包括分辨率，和/或帧率，所述确定模块，还用于：在所述目标视频的缓冲时长小于缓冲时长阈值时，获取所述目标视频的分辨率，和/或帧率；若所述目标视频的分辨率大于预设的分辨率阈值，和/或所述目标视频的帧率大于预设的分辨率阈值，则所述画质选择策略为高画质策略。
根据本公开的一个或多个实施例，所述第一画质档位包括至少两个子画质档位；所述播放模块在根据所述画质选择策略和当前的网络条件，确定目标画质档位时，具体用于：若所 述画质选择策略为高画质策略，则根据所述当前的网络条件，确定至少两个子画质档位；根据所述目标视频的分辨率，和/或帧率，以及所述至少两个子画质档位，确定目标子画质档位。
根据本公开的一个或多个实施例，所述确定模块在根据所述切换指令，以及所述切换指令对应的目标视频的视频信息，确定画质选择策略时，具体用于：获取所述目标视频播放过程中，所述目标视频发生视频缓冲的起始时刻；获取所述切换指令触发时的触发时刻；若所述起始时刻与所述触发时刻的间距小于第一时长阈值，则所述画质选择策略为高流畅策略。
根据本公开的一个或多个实施例，所述确定模块，还用于：获取目标视频播放过程中，所述目标视频发生视频缓冲的结束时刻；若所述起始时刻与所述结束时刻的间距大于第二时长阈值，则所述画质选择策略为高画质策略。
根据本公开的一个或多个实施例，所述视频信息包括视频内容信息和缓冲时长，所述视频内容信息用于表征视频的视频类别，所述缓冲时长用于表征所述目标视频在播放过程中进行视频缓冲的时长；所述画质选择策略包括至少两个内容子策略，所述内容子策略用于表征在不同网络条件下，播放所述视频类别对应的待播放视频时的画质档位；所述确定模块，具体用于：根据所述目标视频的视频内容信息，确定所述目标视频的目标视频类别；根据所述目标视频的第一播放时长和所述缓冲时长，确定所述目标视频类别对应的内容子策略。
根据本公开的一个或多个实施例，所述播放模块在根据所述画质选择策略和当前的网络条件，确定目标画质档位时，具体用于：获取所述视频信息流中的待播放视频，并确定所述待播放视频的待播放视频类别；根据所述待播放视频类别，确定所述画质选择策略中对应的目标内容子策略；根据所述目标内容子策略和当前的网络条件，确定目标画质档位。
第三方面，根据本公开的一个或多个实施例，提供了一种电子设备，包括：处理器，以及与所述处理器通信连接的存储器；
所述存储器存储计算机执行指令；
所述处理器执行所述存储器存储的计算机执行指令，以实现如上第一方面以及第一方面各种可能的设计所述的动态画质视频播放方法。
第四方面，根据本公开的一个或多个实施例，提供了一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机执行指令，当处理器执行所述计算机执行指令时，实现如上第一方面以及第一方面各种可能的设计所述的动态画质视频播放方法。
第五方面，本公开实施例提供一种计算机程序产品，包括计算机程序，该计算机程序被处理器执行时实现如上第一方面以及第一方面各种可能的设计所述的动态画质视频播放方法。
第六方面，本公开实施例提供一种计算机程序，该计算机程序被处理器执行时实现如上第一方面以及第一方面各种可能的设计所述的动态画质视频播放方法。
本实施例提供的动态画质视频播放方法、装置、电子设备及存储介质，该方法通过接收针对视频信息流的切换指令，所述切换指令用于切换视频信息流中播放的目标视频；根据所述切换指令，以及所述切换指令对应的目标视频的视频信息，确定画质选择策略，所述画质选择策略用于表征在不同网络条件下播放所述视频信息流中的待播放视频时的画质档位；根据所述画质选择策略和当前的网络条件，确定目标画质档位，并基于所述目标画质档位播放所述视频信息流中的待播放视频。由于用户对视频信息流的切换指令，能够表现出用户对视频画质的需求，通过切换指令确定的视频画质选择策略，可以实现满足用户需求的视频画质 的自动选择，而不仅依靠网速作为视频画质的唯一影响因素，满足用户在不同网速条件下的个性化的画质需求，提高用户观看视频信息流中的视频时的观看体验。
本公开实施方式中的多个装置之间所交互的消息或者信息的名称仅用于说明性的目的，而并不是用于对这些消息或信息的范围进行限制。
可以理解的是，在使用本公开各实施例公开的技术方案之前，均应当依据相关法律法规通过恰当的方式对本公开所涉及个人信息的类型、使用范围、使用场景等告知用户并获得用户的授权。
例如，在响应于接收到用户的主动请求时，向用户发送提示信息，以明确地提示用户，其请求执行的操作将需要获取和使用到用户的个人信息。从而，使得用户可以根据提示信息来自主地选择是否向执行本公开技术方案的操作的电子设备、应用程序、服务器或存储介质等软件或硬件提供个人信息。
作为一种可选的但非限定性的实现方式，响应于接收到用户的主动请求，向用户发送提示信息的方式例如可以是弹窗的方式，弹窗中可以以文字的方式呈现提示信息。此外，弹窗中还可以承载供用户选择“同意”或者“不同意”向电子设备提供个人信息的选择控件。
可以理解的是，上述通知和获取用户授权过程仅是示意性的，不对本公开的实现方式构成限定，其它满足相关法律法规的方式也可应用于本公开的实现方式中。
可以理解的是，本技术方案所涉及的数据(包括但不限于数据本身、数据的获取或使用)应当遵循相应法律法规及相关规定的要求。
以上描述仅为本公开的较佳实施例以及对所运用技术原理的说明。本领域技术人员应当理解，本公开中所涉及的公开范围，并不限于上述技术特征的特定组合而成的技术方案，同时也应涵盖在不脱离上述公开构思的情况下，由上述技术特征或其等同特征进行任意组合而形成的其它技术方案。例如上述特征与本公开中公开的(但不限于)具有类似功能的技术特征进行互相替换而形成的技术方案。
此外，虽然采用特定次序描绘了各操作，但是这不应当理解为要求这些操作以所示出的特定次序或以顺序次序执行来执行。在一定环境下，多任务和并行处理可能是有利的。同样地，虽然在上面论述中包含了若干具体实现细节，但是这些不应当被解释为对本公开的范围的限制。在单独的实施例的上下文中描述的某些特征还可以组合地实现在单个实施例中。相反地，在单个实施例的上下文中描述的各种特征也可以单独地或以任何合适的子组合的方式实现在多个实施例中。
尽管已经采用特定于结构特征和/或方法逻辑动作的语言描述了本主题，但是应当理解所附权利要求书中所限定的主题未必局限于上面描述的特定特征或动作。相反，上面所描述的特定特征和动作仅仅是实现权利要求书的示例形式。

Claims (14)

  1. 一种动态画质视频播放方法，包括：
    接收针对视频信息流的切换指令，所述切换指令用于切换视频信息流中播放的目标视频；
    根据所述切换指令，以及所述切换指令对应的目标视频的视频信息，确定画质选择策略，所述画质选择策略用于表征在不同网络条件下播放所述视频信息流中的待播放视频时的画质档位；
    根据所述画质选择策略和当前的网络条件，确定目标画质档位，并基于所述目标画质档位播放所述视频信息流中的待播放视频。
  2. 根据权利要求1所述的方法，其中，
    所述画质选择策略包括高画质策略或高流畅策略，所述高画质策略用于指示终端设备在第一网络条件下，以第一画质档位播放所述视频信息流中的待播放视频，所述高流畅策略用于指示终端设备在第一网络条件下，以第二画质档位播放所述视频信息流中的待播放视频，所述第一画质档位对应的码率大于所述第二画质档位对应的码率。
  3. 根据权利要求2所述的方法，其中，所述视频信息包括缓冲时长，所述缓冲时长用于表征所述目标视频在播放过程中进行视频缓冲的时长；
    根据所述切换指令，以及所述切换指令对应的目标视频的视频信息，确定画质选择策略，包括：
    获取所述切换指令触发前所述目标视频的第一播放时长；
    在所述目标视频的缓冲时长大于缓冲时长阈值时，若所述第一播放时长小于播放时长阈值，则所述画质选择策略为高流畅策略，若所述第一播放时长大于所述播放时长阈值，则所述画质选择策略为高画质策略。
  4. 根据权利要求3所述的方法，其中，所述视频信息还包括分辨率，和/或帧率，所述方法还包括：
    在所述目标视频的缓冲时长小于缓冲时长阈值时，获取所述目标视频的分辨率，和/或帧率；
    若所述目标视频的分辨率大于预设的分辨率阈值，和/或所述目标视频的帧率大于预设的分辨率阈值，则所述画质选择策略为高画质策略。
  5. 根据权利要求4所述的方法，其中，所述第一画质档位包括至少两个子画质档位；根据所述画质选择策略和当前的网络条件，确定目标画质档位，包括：
    若所述画质选择策略为高画质策略，则根据所述当前的网络条件，确定至少两个子画质档位；
    根据所述目标视频的分辨率，和/或帧率，以及所述至少两个子画质档位，确定目标子画质档位。
  6. 根据权利要求2所述的方法，其中，根据所述切换指令，以及所述切换指令对应的目标视频的视频信息，确定画质选择策略，包括：
    获取所述目标视频播放过程中，所述目标视频发生视频缓冲的起始时刻；
    获取所述切换指令触发时的触发时刻；
    若所述起始时刻与所述触发时刻的间距小于第一时长阈值，则所述画质选择策略为高流畅策略。
  7. 根据权利要求6所述的方法，所述方法还包括：
    获取目标视频播放过程中，所述目标视频发生视频缓冲的结束时刻；
    若所述起始时刻与所述结束时刻的间距大于第二时长阈值，则所述画质选择策略为高画质策略。
  8. 根据权利要求2所述的方法，其中，所述视频信息包括视频内容信息和缓冲时长，所述视频内容信息用于表征视频的视频类别，所述缓冲时长用于表征所述目标视频在播放过程中进行视频缓冲的时长；所述画质选择策略包括至少两个内容子策略，所述内容子策略用于表征在不同网络条件下，播放所述视频类别对应的待播放视频时的画质档位；
    根据所述切换指令，以及所述切换指令对应的目标视频的视频信息，确定画质选择策略，包括：
    根据所述目标视频的视频内容信息，确定所述目标视频的目标视频类别；
    根据所述目标视频的第一播放时长和所述缓冲时长，确定所述目标视频类别对应的内容子策略。
  9. 根据权利要求8所述的方法，其中，根据所述画质选择策略和当前的网络条件，确定目标画质档位，包括：
    获取所述视频信息流中的待播放视频，并确定所述待播放视频的待播放视频类别；
    根据所述待播放视频类别，确定所述画质选择策略中对应的目标内容子策略；
    根据所述目标内容子策略和当前的网络条件，确定目标画质档位。
  10. 一种动态画质视频播放装置，包括：
    接收模块，用于接收针对视频信息流的切换指令，所述切换指令用于切换视频信息流中播放的目标视频；
    确定模块，用于根据所述切换指令，以及所述切换指令对应的目标视频的视频信息，确定画质选择策略，所述画质选择策略用于表征在不同网络条件下播放所述视频信息流中的待播放视频时的画质档位；
    播放模块，用于根据所述画质选择策略和当前的网络条件，确定目标画质档位，并基于所述目标画质档位播放所述视频信息流中的待播放视频。
  11. 一种电子设备，包括：处理器，以及与所述处理器通信连接的存储器；
    所述存储器存储计算机执行指令；
    所述处理器执行所述存储器存储的计算机执行指令，以实现如权利要求1至10中任一项所述的方法。
  12. 一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机执行指令，当处理器执行所述计算机执行指令时，实现如权利要求1至10中任一项所述的方法。
  13. 一种计算机程序产品，包括计算机程序，该计算机程序被处理器执行时实现权利要求1至10中任一项所述的方法。
  14. 一种计算机程序，所述计算机程序被处理器执行时实现权利要求1至10中任一项所述的方法。
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