CN111464864A - Reverse order video acquisition method and device, electronic equipment and storage medium - Google Patents
Reverse order video acquisition method and device, electronic equipment and storage medium Download PDFInfo
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- H—ELECTRICITY
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
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- H—ELECTRICITY
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/439—Processing of audio elementary streams
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Abstract
The application discloses a reverse order video obtaining method and device, electronic equipment and a storage medium, and relates to the technical field of electronic equipment. The method is applied to the electronic equipment, and comprises the following steps: the method comprises the steps of obtaining an original video, extracting video frames from the original video, extracting audio frames from the original video, synthesizing the video frames and the audio frames to generate a current video, storing the current video in a reverse order mode, and obtaining a reverse order video of the original video. The reverse-order video acquisition method, the reverse-order video acquisition device, the electronic equipment and the storage medium provided by the embodiment of the application generate the current video by extracting the data frames of the original video and store the current video in a reverse-order mode to acquire the reverse-order video of the original video, so that the reverse-order video can be quickly and conveniently acquired.
Description
Technical Field
The present application relates to the field of electronic device technologies, and in particular, to a reverse order video obtaining method and apparatus, an electronic device, and a storage medium.
Background
With the development of science and technology, electronic equipment is more and more widely used and has more and more functions, and the electronic equipment becomes one of the necessary things in daily life of people. At present, electronic equipment can be used for playing videos, but the videos played by the electronic equipment are generally in a positive sequence, the playing form is fixed, and the user experience is poor.
Disclosure of Invention
In view of the foregoing problems, the present application provides a reverse order video acquisition method, apparatus, electronic device, and storage medium to solve the foregoing problems.
In a first aspect, an embodiment of the present application provides a reverse order video obtaining method, which is applied to an electronic device, and the method includes: acquiring an original video; extracting video frames from the original video and extracting audio frames from the original video; synthesizing the video frame and the audio frame to generate a current video; and storing the current video in a reverse order mode to obtain the reverse order video of the original video.
In a second aspect, an embodiment of the present application provides a reverse order video obtaining apparatus, which is applied to an electronic device, and the apparatus includes: the original video acquisition module is used for acquiring an original video; the data extraction module is used for extracting video frames from the original video and extracting audio frames from the original video; the current video generation module is used for synthesizing the video frame and the audio frame to generate a current video; and the reverse order video obtaining module is used for storing the current video in a reverse order mode by the video to obtain the reverse order video of the original video.
In a third aspect, an embodiment of the present application provides an electronic device, including a memory and a processor, the memory being coupled to the processor, the memory storing instructions, and the processor performing the above method when the instructions are executed by the processor.
In a fourth aspect, the present application provides a computer-readable storage medium, in which a program code is stored, and the program code can be called by a processor to execute the above method.
The reverse-order video obtaining method, the reverse-order video obtaining device, the electronic equipment and the storage medium, provided by the embodiment of the application, obtain an original video, extract video frames from the original video, extract audio frames from the original video, synthesize the video frames and the audio frames to generate a current video, store the current video in a reverse-order mode, obtain a reverse-order video of the original video, extract data frames from the original video to generate the current video, store the current video in the reverse-order mode to obtain the reverse-order video of the original video, and therefore the reverse-order video can be rapidly and conveniently obtained.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flowchart illustrating a reverse order video obtaining method according to an embodiment of the present application;
fig. 2 is a schematic flowchart illustrating a reverse order video acquisition method according to another embodiment of the present application;
FIG. 3 is a schematic diagram illustrating reverse order video saving provided by an embodiment of the present application;
fig. 4 is a schematic flowchart illustrating a reverse order video obtaining method according to yet another embodiment of the present application;
fig. 5 is a schematic flowchart illustrating a reverse order video obtaining method according to another embodiment of the present application;
fig. 6 shows a flowchart of step S420 of the reverse order video acquisition method shown in fig. 5 of the present application;
fig. 7 is a schematic flowchart illustrating a reverse order video obtaining method according to yet another embodiment of the present application;
fig. 8 shows a block diagram of a reverse order video capture apparatus provided in an embodiment of the present application;
fig. 9 is a block diagram illustrating an electronic device for executing a reverse order video capture method according to an embodiment of the present application;
fig. 10 illustrates a storage unit for storing or carrying program codes for implementing a reverse-order video acquisition method according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
At present, an electronic device may acquire a video in a recording or downloading manner and play the acquired video, wherein the acquired video is generally played in a forward order manner when being played, however, in some special scenes, the video needs to be played in a reverse order to enhance the interest of playing the video, for example, for a video with a top-down stream, in some special scenes, the stream of the video needs to be changed from bottom to top to enhance the interest of playing the video. At present, in order to realize reverse-order playing of forward-order videos, software processing is generally used, for example, a video clip is generally used to process the forward-order videos to achieve the effect of reverse-order playing, but this processing method needs third-party software, and the processing effect is poor and the processing efficiency is low.
In view of the above problems, the inventor finds and provides a reverse order video obtaining method, a reverse order video obtaining device, an electronic device, and a storage medium according to embodiments of the present application, and obtains a reverse order video of an original video by performing data frame extraction on the original video to generate a current video and storing the current video in a reverse order manner, so that the reverse order video can be obtained quickly and conveniently. The specific reverse order video acquisition method is explained in detail in the following embodiments.
Referring to fig. 1, fig. 1 is a schematic flowchart illustrating a reverse order video obtaining method according to an embodiment of the present application. The reverse-order video acquisition method is used for extracting data frames of an original video to generate a current video, and storing the current video in a reverse-order mode to acquire the reverse-order video of the original video, so that the reverse-order video can be quickly and conveniently acquired. In a specific embodiment, the reverse order video capture method is applied to the reverse order video capture device 200 shown in fig. 8 and the electronic device 100 (fig. 9) configured with the reverse order video capture device 200. The specific process of the present embodiment will be described below by taking an electronic device as an example, and it is understood that the electronic device applied in the present embodiment may be a smart phone, a tablet computer, a wearable electronic device, and the like, which is not limited herein. As will be described in detail with respect to the flow shown in fig. 1, the reverse order video obtaining method may specifically include the following steps:
step S110: an original video is acquired.
In this embodiment, an original video may be acquired.
In some embodiments, the original video may be a video generated by an electronic device through a camera recording, may be a video pre-stored in a local album by the electronic device, may be a video downloaded by the electronic device from a server through a network, may also be a video received by the electronic device from another electronic device through a network, and the like, which is not limited herein, wherein the electronic device may download the video from the server through a wireless network or a data network, and may also receive the video from another electronic device through a wireless network or a data network.
In some embodiments, the video duration of the original video may be set according to needs, for example, 10min, 5min, 3min, and the like, which is not limited herein.
In some embodiments, the video size of the original video may be set according to needs, for example, may be 10M, 200M, 300M, and the like, which is not limited herein.
Step S120: video frames are extracted from the original video and audio frames are extracted from the original video.
In this embodiment, after the original video is acquired, the original video may be processed to extract video frames from the original video and audio frames from the original video.
In some embodiments, after the original video is obtained, video frames may be extracted from the original video and stored locally to the electronic device, while audio frames may be extracted from the original video and stored locally to the electronic device. The video frame extracted from the original video and the audio frame extracted from the original video can be stored in the same storage area of the electronic device, and can also be stored in different storage areas of the electronic device, wherein when the video frame extracted from the original video and the audio frame extracted from the original video are stored in the same storage area of the electronic device, the video frame and the audio frame with corresponding relations can be correspondingly stored in the same storage area, and when the video frame extracted from the original video and the audio frame extracted from the original video are stored in different storage areas of the electronic device, the video frame and the audio frame with corresponding relations can be respectively stored in different storage areas of the electronic device after the mapping relations are established between the video frame and the audio frame.
In some embodiments, when extracting a video frame from an original video and an audio frame from the original video, the time stamp of the video frame extracted from the original video and the time stamp of the audio frame extracted from the original video are ensured to be consistent, so as to ensure the audio frame and the video frame are synchronized when audio-video synthesis is performed subsequently. For example, when timestamp a is extracted from the original video, then the corresponding audio frame of the video frame in the original video is also extracted at timestamp a,
step S130: and synthesizing the video frame and the audio frame to generate the current video.
In this embodiment, after extracting a video frame from an original video and an audio frame from the original video, the extracted video frame and the extracted audio frame may be synthesized to generate a new video as a current video.
In some embodiments, after extracting a video frame from an original video and extracting an audio frame from the original video, the extracted video frame and the extracted audio frame may be synthesized by an audio/video synthesizer, for example, the extracted video frame and the extracted audio frame may be synthesized by an audio/video synthesizer encapsulating the mediacodec module to obtain a current video.
Step S140: and storing the current video in a reverse order mode to obtain the reverse order video of the original video.
In this embodiment, after the current video is obtained, the current video may be stored in a reverse order manner to obtain a reverse order video of the original video, so that the reverse order video of the original video may be quickly and conveniently obtained in the reverse order video storage manner.
In some embodiments, after the current video is acquired, each frame of data of the current video may be sequentially acquired in a forward time sequence, and then sequentially stored in a reverse time sequence, so as to obtain a reverse video of the original video. For example, assuming that the current video sequentially includes first frame data, second frame data, third frame data, and fourth frame data in a time positive sequence, the first frame data, the second frame data, the third frame data, and the fourth frame data may be sequentially acquired from the current video and then saved in a time reverse sequence of the fourth frame data, the third frame data, the second frame data, and the first frame data to obtain a video sequentially including the fourth frame data, the third frame data, the second frame data, and the first frame data in a time positive sequence as a reverse sequence video of the original video. For example, when the original video is a video of a top-down stream, then the reverse order video of the original video is a video of a bottom-up stream.
The electronic device may be preset with a video data storage area, and the video data storage area may be used to store videos, for example, the video data storage area may be used to store original videos, may be used to store current videos, and may also be used to store reverse videos of the original videos, and the like, which is not limited herein. In some embodiments, after obtaining the current video, the current video may be written into a video data storage area of the electronic device in a reverse order, obtaining a reverse order video of the original video.
According to the reverse-order video obtaining method provided by one embodiment of the application, an original video is obtained, a video frame is extracted from the original video, an audio frame is extracted from the original video, the video frame and the audio frame are synthesized to generate a current video, the current video is stored in a reverse order mode, a reverse-order video of the original video is obtained, the current video is generated by extracting a data frame from the original video, the current video is stored in the reverse order mode to obtain the reverse-order video of the original video, and therefore the reverse-order video can be rapidly and conveniently obtained.
Referring to fig. 2, fig. 2 is a schematic flowchart illustrating a reverse order video obtaining method according to another embodiment of the present application. The method is applied to the electronic device, and will be described in detail with reference to the flow shown in fig. 2, where the reverse order video obtaining method may specifically include the following steps:
step S210: an original video is acquired.
Step S220: video frames are extracted from the original video and audio frames are extracted from the original video.
Step S230: and synthesizing the video frame and the audio frame to generate the current video.
For detailed description of steps S210 to S230, please refer to steps S110 to S130, which are not described herein again.
Step S240: and acquiring first frame data of the current video, and storing the first frame data as the last frame data of the reverse video of the original video.
In this embodiment, after the current video is acquired, the first frame data of the current video may be acquired from the current video, and then the first frame data of the current video may be saved as the last frame data of the reverse video of the original video. For example, in some embodiments, if the first frame data of the current video is data a, the data a may be saved as the last-but-one frame data of the reverse video of the original video, that is, the last-but-one frame data of the reverse video of the original video is data a.
Step S250: and repeating the steps of acquiring the (N + 1) th frame data of the current video, storing the (N + 1) th frame data as the (N + 1) th frame data of the reverse order video of the original video, and acquiring the reverse order video of the original video when the current video is completely stored, wherein N is a positive integer which is sequentially increased.
In this embodiment, the reverse video of the original video may be obtained by obtaining the first frame data of the current video from the current video, saving the first frame data of the current video as the last-but-one frame data of the reverse video of the original video, obtaining the second frame data of the current video from the current video, saving the second frame data of the current video as the last-but-one frame data of the reverse video of the original video, obtaining the third frame data of the current video from the current video, saving the third frame data of the current video as the last-but-one frame data … … of the reverse video of the original video, and saving all data of the current video until all data of the current video are saved. Referring to fig. 3, fig. 3 is a schematic diagram illustrating reverse-order video storage according to an embodiment of the present application, in fig. 3, multiple frames of data of a forward-order video (current video) are sequentially acquired from top to bottom according to a time axis, and the reverse-order video that generates the forward-order video is sequentially stored in a reverse order, where the reverse-order video corresponds to the forward-order video in a time-down and top-down sequence according to a time-down sequence.
For example, assuming that the current video sequentially includes first frame data, second frame data, third frame data, and fourth frame data in a time positive sequence, after the current video is acquired, sequentially performing: acquiring first frame data of a current video from the current video, and then storing the first frame data of the current video to be used as the last-but-one frame data of a reverse-order video of the original video; acquiring second frame data of the current video from the current video, and then storing the second frame data of the current video to be used as the penultimate frame data of the reverse-order video of the original video; acquiring third frame data of the current video from the current video, and then storing the third frame data of the current video to be used as the third frame data of the inverse of the reverse video of the original video; and acquiring fourth frame data of the current video from the current video, and saving the fourth frame data of the current video to be used as the fourth frame data of the inverse of the reverse video of the original video so as to obtain the reverse video of the original video.
In another embodiment of the present application, a method for obtaining a reverse video includes obtaining an original video, extracting a video frame from the original video, extracting an audio frame from the original video, synthesizing the video frame and the audio frame to generate a current video, obtaining first frame data of the current video, storing the first frame data as last-but-first frame data of the reverse video of the original video, repeatedly performing the steps of obtaining N +1 th frame data of the current video, storing the N +1 th frame data as last-but-N +1 th frame data of the original video, and storing all the current videos until all the current videos are stored to obtain the reverse video of the original video, where N is a positive integer that sequentially increases. Compared with the reverse-order video acquisition method shown in fig. 1, in the embodiment, the reverse-order video of the original video is obtained by repeatedly acquiring the multi-frame data of the current video and sequentially storing the multi-frame data, so that the accuracy of the obtained reverse-order video is improved.
Referring to fig. 4, fig. 4 is a schematic flowchart illustrating a reverse order video obtaining method according to yet another embodiment of the present application. The method is applied to the electronic device including a camera, and as will be described in detail below with respect to the flow shown in fig. 4, the reverse order video acquiring method may specifically include the following steps:
step S310: and acquiring video data through the camera.
In this embodiment, the electronic device includes a camera, where the camera may be a front camera of the electronic device, a rear camera of the electronic device, a rotary camera of the electronic device, a telescopic camera of the electronic device, and the like, and is not limited herein. Wherein, when this camera is electronic equipment's flexible camera, the camera can sliding connection with electronic equipment's body to stretch out electronic equipment's body or hide in electronic equipment's local based on sliding.
In some embodiments, the electronic device may acquire the video data through the camera, where the electronic device may acquire the video data through the camera based on a user operation, and may also acquire the video data through the camera based on a preset condition, which is not limited herein.
Specifically, the video data can be collected to the hardware abstraction layer HA L L through the camera, and then transmitted to the media recorder through the pipeline BQ mechanism dispatch buffer to the surface configured when the video starts, so as to record the video.
Step S320: and carrying out time delay processing on the video data acquired by the camera to acquire time delay video data.
In this embodiment, after the video data collected by the camera is obtained, the original video may be obtained based on the video data collected by the camera. In some embodiments, after the video data collected by the camera is obtained, a video generated by performing processes such as drying removal and audio/video synthesis on the collected video data may be used as an original video. For example, after 10min of video data acquired by a camera is obtained, the 10min of video data may be subjected to drying removal, frame deblurring removal, and audio/video synthesis after incomplete frames are removed, so as to obtain an original video.
In this embodiment, after obtaining the video data collected by the camera, the video data collected by the camera may be subjected to a delay process to obtain the delayed video data.
In some embodiments, the capturing of video data by a camera to the hardware abstraction layer HA L L may be performed by a pipeline BQ mechanism dispatch buffer to a surface configured at the time of starting a video, where the surface is generally a surface, that is, the surface is used to capture video data captured by the camera, and transmits the video data captured by the camera to a media recorder, where as a way, the fps of the recorder may be modified before the video data captured by the camera is completely transmitted to the media recorder, and normally, the fps is 30, if the video data captured by the camera is subjected to delay processing, that is, the video data needs to be played quickly, for example, the video data of 30min only needs to be played for 3min, the fps may be configured as 30/10 ═ 3, for example, the video data of 30min only needs to be played for 1min, the fps may be configured as 30/30 ═ 1, in some embodiments, the fps may be configured as 100000, and the like.
In some embodiments, a camera application of the electronic device integrates a time-delayed video function and a switch corresponding to the time-delayed video function. Therefore, when the electronic device collects video data through the camera, the on-off condition of the switch of the time-delay video function can be detected, wherein when the switch of the time-delay video function is detected to be in an on state, the electronic device is represented to start the time-delay video function, the video data collected by the camera is subjected to time-delay processing to obtain the time-delay video data, and when the switch of the time-delay video function is detected to be in an off state, the electronic device is represented to not start the time-delay video function, and the video data collected by the camera is not subjected to time-delay processing.
Step S330: and acquiring the original video based on the delayed video data.
In some embodiments, after obtaining the delayed video data, the original video may be obtained based on the delayed video data. In some embodiments, after obtaining the delayed video data, a video generated after performing processes such as drying and audio-video synthesis on the delayed video data may be used as an original video. For example, after 3min of delayed video data, the 3min of delayed video data may be subjected to drying removal, frame deblurring removal, and audio-video synthesis after incomplete frame removal to obtain an original video.
Step S340: video frames are extracted from the original video and audio frames are extracted from the original video.
Step S350: and synthesizing the video frame and the audio frame to generate the current video.
Step S360: and storing the current video in a reverse order mode to obtain the reverse order video of the original video.
For the detailed description of steps S340 to S360, please refer to steps S120 to S140, which are not described herein again.
In another embodiment of the present application, a method for obtaining reverse-order video includes acquiring video data by a camera, performing delay processing on the video data acquired by the camera to obtain delayed video data, obtaining an original video based on the delayed video data, extracting a video frame from the original video, extracting an audio frame from the original data, synthesizing the video frame and the audio frame to generate a current video, and storing the current video in a reverse-order manner to obtain a reverse-order video of the original video. Compared with the reverse-order video acquisition method shown in fig. 1, in the embodiment, the delayed video data is obtained by acquiring the video data through the camera and performing delayed processing, and the original video is acquired based on the delayed video data, so that the effect of the reverse-order video is improved, and the user experience is improved.
Referring to fig. 5, fig. 5 is a schematic flowchart illustrating a reverse order video obtaining method according to another embodiment of the present application. The method is applied to the electronic device, and will be described in detail with respect to the flow shown in fig. 5, where the reverse order video obtaining method may specifically include the following steps:
step S410: and acquiring video data through the camera.
For detailed description of step S410, please refer to step S310, which is not described herein.
Step S420: and performing video optimization processing on the video data acquired by the camera to acquire optimized video data.
In this embodiment, after the video data collected by the camera is obtained, the original video may be obtained based on the video data collected by the camera. In some embodiments, after the video data collected by the camera is obtained, a video generated by performing processes such as drying removal and audio/video synthesis on the collected video data may be used as an original video. For example, after 10min of video data acquired by a camera is obtained, the 10min of video data may be subjected to drying removal, frame deblurring removal, and audio/video synthesis after incomplete frames are removed, so as to obtain an original video.
In this embodiment, after the video data acquired by the camera is obtained, video optimization processing may be performed on the video data acquired by the camera to obtain optimized video data. The video optimization process may include, but is not limited to, a video filter process, a video beautifying process, a video blurring process, and the like.
In some embodiments, a camera application of the electronic device integrates a video optimization function and a switch corresponding to the video optimization function. Therefore, when the electronic equipment collects video data through the camera, the on-off condition of the switch of the video optimization function can be detected, wherein when the switch of the video optimization function is detected to be in the on state, the electronic equipment is represented to start the video optimization function, video optimization processing is carried out on the video data collected by the camera to obtain optimized video data, and when the switch of the video optimization function is detected to be in the off state, the electronic equipment is represented not to start the video optimization function, and video optimization processing is not carried out on the video data collected by the camera.
Referring to fig. 6, fig. 6 is a flowchart illustrating step S420 of the reverse order video obtaining method shown in fig. 5 according to the present application. The video optimization processing includes video blurring processing, and as will be described in detail with respect to the flow shown in fig. 6, the method may specifically include the following steps:
step S421: and detecting the video data collected by the camera.
In this embodiment, after the video data collected by the camera is obtained, the video data collected by the camera may be subjected to video blurring processing to obtain blurred video data. Therefore, when the virtual video data obtained by performing video virtual processing on the video data acquired by the camera is displayed, the portrait in the displayed video is highlighted and other scenes are virtual.
In some embodiments, a camera application of the electronic device integrates a video blurring function and a switch corresponding to the video blurring function. Therefore, when the electronic device collects video data through the camera, the on-off condition of the switch of the video blurring function can be detected, wherein when the switch of the video blurring function is detected to be in an on state, the electronic device is represented to start the video blurring function, video blurring processing is performed on the video data collected by the camera to obtain blurring video data, and when the switch of the video blurring function is detected to be in an off state, the electronic device is represented not to start the video blurring function, and video blurring processing is not performed on the video data collected by the camera.
The video blurring processing is to highlight the portrait in the video and blur the scene, that is, the video blurring processing method is generally applied to the video with the portrait. Therefore, in this embodiment, the video data collected by the camera may be detected to determine whether the video data collected by the camera includes portrait data.
In some embodiments, after the video data is collected by the camera, human image detection may be performed on the video data collected by the camera, for example, human face detection, iris detection, and the like may be performed on the video data collected by the camera, so as to determine whether the video data collected by the camera includes human image data. The video data collected by the camera can be determined to include portrait data when the video data collected by the camera is detected to include face data and iris data, and the video data collected by the camera can be determined not to include portrait data when the video data collected by the camera is detected to include no face data and iris data.
Step S422: when the fact that the video data collected by the camera comprises portrait data is detected, video blurring processing is conducted on the video data collected by the camera, and the blurring video data is obtained.
In some embodiments, when it is detected that the video data acquired by the camera does not include portrait data, the representation performs video blurring on the video data acquired by the camera, which cannot achieve the purpose of highlighting the portrait and blurring the scene, and then does not perform video blurring on the video data acquired by the camera.
In some embodiments, when it is detected that the video data acquired by the camera includes portrait data, the video data acquired by the representation camera is subjected to video blurring to achieve the purpose of highlighting the portrait and blurring the scene, and then the video data acquired by the camera is subjected to video blurring to obtain blurred video data.
Step S430: and acquiring the original video based on the optimized data.
In some embodiments, after obtaining the optimized video data, the original video may be obtained based on the optimized video data. In some embodiments, after obtaining the optimized video data, a video generated by performing processes such as drying removal, audio/video synthesis and the like on the optimized video data may be used as an original video. For example, after 3min of optimized video data, the 3min of optimized video data may be subjected to desiccation removal, deblurring frame removal, and incomplete frame removal, and then audio-video synthesis is performed to obtain an original video.
In some implementations, optimizing the video data includes blurring the video data. After obtaining the ghosted video data, the original video may be obtained based on the ghosted video data. In some embodiments, after obtaining the blurred video data, a video generated by performing processes such as drying and audio/video synthesis on the blurred video data may be used as the original video. For example, after 3min of the blurred video data, the blurred video data may be subjected to drying removal, frame deblurring removal, and audio/video synthesis after incomplete frame removal, so as to obtain the original video.
In some embodiments, after obtaining the delayed video data, video blurring may be performed on the delayed video data to obtain delayed and blurred video data. The delayed and blurred video data can provide an effect of rapid loss of time, and user experience is improved. In some embodiments, a camera application of the electronic device integrates a video delay and blurring function and a switch corresponding to the video delay and blurring function. Therefore, when the electronic device collects video data through the camera, the on-off condition of the switch of the video delay and blurring function can be detected, wherein when the video delay and the switch of the blurring function are detected to be in the on state, the electronic device is represented to start the video delay and blurring function, the video blurring processing and the video delay processing are carried out on the video data collected by the camera, the delayed and blurring video data are obtained, when the video delay and the switch of the blurring function are detected to be in the off state, the electronic device is represented not to start the video delay and blurring function, and the video blurring processing and the video delay processing are not carried out on the video data collected by the camera. In some embodiments, after obtaining the ghosted video data, the original video may be obtained based on the ghosted video data. In some embodiments, after obtaining the delayed and blurred video data, a video generated by performing processes such as drying and audio-video synthesis on the delayed and blurred video data may be used as the original video. For example, after 3min of delay and blurring video data, the 3min of delay and blurring video data may be subjected to drying removal, frame deblurring removal, and audio-video synthesis after incomplete frame removal to obtain an original video.
Step S440: video frames are extracted from the original video and audio frames are extracted from the original video.
Step S450: and synthesizing the video frame and the audio frame to generate the current video.
Step S460: and storing the current video in a reverse order mode to obtain the reverse order video of the original video.
For the detailed description of steps S440 to S460, refer to steps S120 to S140, which are not described herein again.
In another embodiment of the present application, a method for obtaining reverse-order video includes acquiring video data by a camera, performing video optimization processing on the video data acquired by the camera, acquiring optimized video data, acquiring an original video based on the optimized video data, extracting a video frame from the original video, extracting an audio frame from the original data, synthesizing the video frame and the audio frame to generate a current video, and storing the current video in a reverse-order manner to obtain a reverse-order video of the original video. Compared with the reverse-order video acquisition method shown in fig. 1, in the embodiment, the video data is acquired by the camera to perform video optimization processing to obtain optimized video data, and the original video is acquired based on the optimized video data, so that the effect of the reverse-order video is improved, and the user experience is improved.
Referring to fig. 7, fig. 7 is a schematic flowchart illustrating a reverse order video obtaining method according to yet another embodiment of the present application. The method is applied to the electronic device, and will be described in detail with respect to the flow shown in fig. 7, where the reverse order video obtaining method may specifically include the following steps:
step S510: and starting a camera application program and displaying a display interface corresponding to the camera application program.
In some embodiments, the electronic device is installed with a camera application, wherein the camera application may be used for capturing and recording video data, playing video, storing video in a reverse order, and the like, and is not limited herein. In this embodiment, the electronic device may start a camera application and display a presentation interface corresponding to the camera application. In some embodiments, the camera application may be a native application of the electronic device, or may be another application that integrates camera functions, and is not limited herein.
In some embodiments, the electronic device may automatically start the camera application, or may start the camera application based on a user operation, which is not limited herein. Specifically, when the electronic device automatically starts the camera application, the electronic device may automatically start the camera application based on a preset camera application start rule, for example, the electronic device may automatically start the camera application based on a preset start time of the camera application, a start environment brightness of the camera application, a start environment volume of the camera application, a start environment temperature of the camera application, and the like. When the electronic device starts the camera application based on a user operation, the electronic device may detect a click operation on an application icon corresponding to the camera application, detect a click operation on a link of the camera application, detect voice information indicating that the camera application is started, and the like.
In some embodiments, the presentation interface corresponding to the camera application displayed by the electronic device may include a shooting interface, a preview interface, a video selection interface, a video playing interface, and the like, which is not limited herein.
Step S520: and detecting the operation acted on the display interface.
In this embodiment, in the process of displaying the presentation interface corresponding to the camera application, the operation acting on the presentation interface may be detected. In some embodiments, the operation may include a single-finger click, a multi-finger click, a single-finger long press, a multi-finger long press, a heavy press, a plurality of clicks, a sliding operation, a copying operation, a pressing area, and the like, wherein the single-finger click refers to an operation of clicking on the presentation interface by a single finger; the multi-finger clicking refers to the operation that multiple fingers click on the display interface simultaneously; the single-finger long pressing means that the single finger presses on the display interface for more than a preset time; the multi-finger long press means that a plurality of fingers simultaneously press on the display interface for more than a preset time; the heavy pressure means that the pressing force on the display interface exceeds the preset force; the multiple clicks refer to the fact that the number of clicks exceeds the preset number within the preset time; the sliding operation refers to the operation of sliding on the display interface by a single finger; the copying operation refers to the operation of copying the text information to the pasting board on the display interface; the pressing area refers to the area of a single finger on the display interface exceeding the preset area.
Step S530: and when detecting that the operation acted on the display interface meets the specified operation, acquiring the original video.
In some embodiments, the electronic device may be preset and store a specific operation, and the specific operation is used as a judgment basis for an operation acting on the presentation interface. Therefore, in this embodiment, when the operation acting on the display interface is detected, the operation acting on the display interface may be compared with the specified operation to determine whether the operation acting on the display interface satisfies the specified operation, where when the determination result represents that the operation acting on the display interface satisfies the specified operation, the representation is used for expecting to play the original video in the reverse order, and then the original video may be obtained. In some implementations, the specified operation can be, for example, a multi-finger press operation that acts on an original one of the video selection interfaces.
Step S540: video frames are extracted from the original video and audio frames are extracted from the original video.
Step S550: and synthesizing the video frame and the audio frame to generate the current video.
Step S560: and storing the current video in a reverse order mode to obtain the reverse order video of the original video.
For the detailed description of steps S440 to S460, refer to steps S120 to S140, which are not described herein again.
Step S570: and acquiring the video time length corresponding to the original video as a first time length, and acquiring the video time length corresponding to the reverse video of the original video as a second time length.
In some embodiments, after obtaining a reverse order video of an original video, a video duration corresponding to the original video may be obtained as a first duration, a video duration corresponding to the reverse order video of the original video may be obtained as a second duration, and the first duration and the second duration are compared to determine whether the first duration and the second duration are consistent, where when a comparison result indicates that the first duration and the second duration are consistent, it may be determined that the video duration corresponding to the original video is consistent with the video duration of the reverse order video of the original video, that is, it may be determined that the reverse order video of the original video is complete, and when the comparison result indicates that the first duration and the second duration are inconsistent, it may be determined that the video duration corresponding to the original video is not consistent with the video duration of the reverse order video of the original video, that is, it may be determined that the reverse order video of the original video is incomplete.
Step S580: and when the first duration is consistent with the second duration, deleting the original video and storing the reverse video of the original video.
In some embodiments, when the first duration and the second duration are determined to be consistent, that is, when the reverse order video of the original video is determined to be complete, the original video may be deleted and the reverse order video of the original video may be saved to release the storage space of the device.
In another embodiment of the present application, a method for obtaining reverse-order video includes starting a camera application, displaying a display interface corresponding to the camera application, detecting an operation applied to the display interface, obtaining an original video when it is detected that the operation applied to the display interface satisfies a specified operation, extracting a video frame from the original video, extracting an audio frame from the original video, synthesizing the video frame and the audio frame to generate a current video, storing the current video in a reverse-order manner, obtaining a reverse-order video of the original video, obtaining a video duration corresponding to the original video as a first duration, obtaining a video duration corresponding to the reverse-order video of the original video as a second duration, and deleting the original video and storing the reverse-order video of the original video when the first duration and the second duration are consistent. Compared with the reverse-order video acquisition method shown in fig. 1, in the embodiment, the original video is acquired when the operation of the user on the display interface of the camera application program meets the specified operation, so that the acquisition of the reverse-order video is specified according to the user operation, and the user experience is improved. In addition, the embodiment also determines whether the reverse order video of the original video is complete based on the video time length corresponding to the original video and the video time length corresponding to the reverse order video of the original video, so as to improve the accuracy of the obtained reverse order video.
Referring to fig. 8, fig. 8 is a block diagram illustrating a reverse order video capture device 200 according to an embodiment of the present disclosure. The reverse order video capture device 200 is applied to the electronic equipment, and will be explained with reference to the block diagram shown in fig. 8, where the reverse order video capture device 200 includes: an original video obtaining module 210, a data extracting module 220, a current video generating module 230, and a reverse order video obtaining module 240, wherein:
an original video obtaining module 210, configured to obtain an original video.
Further, the electronic device includes a camera, and the original video acquiring module 210 includes: the video data acquisition submodule comprises a video data acquisition submodule, a time-delay video data acquisition submodule, a first original video acquisition submodule, an optimized video data acquisition submodule and a second original video acquisition submodule, wherein:
and the video data acquisition submodule is used for acquiring video data through the camera.
And the delayed video data acquisition submodule is used for performing delayed processing on the video data acquired by the camera to acquire delayed video data.
And the first original video acquisition sub-module is used for acquiring the original video based on the delayed video data.
And the optimized video data acquisition submodule is used for carrying out video optimization processing on the video data acquired by the camera to acquire optimized video data.
Further, the video optimization processing includes video blurring processing, and the blurring video data obtaining sub-module includes: a video data detection unit and a blurred video data acquisition unit, wherein:
and the video data detection unit is used for detecting the video data acquired by the camera.
And the blurring video data acquisition unit is used for carrying out video blurring processing on the video data acquired by the camera to acquire blurring video data when the video data acquired by the camera contains portrait data.
And the second original video acquisition sub-module is used for acquiring the original video based on the optimized video data.
Further, the original video acquiring module 210 includes: the display interface display submodule, the operation detection submodule and the second original video acquisition submodule are connected, wherein:
and the display interface display submodule is used for starting the camera application program and displaying a display interface corresponding to the camera application program.
And the operation detection submodule is used for detecting the operation acted on the display interface.
And the second original video acquisition submodule is used for acquiring the original video when detecting that the operation acted on the display interface meets the specified operation.
A data extracting module 220, configured to extract video frames from the original video and audio frames from the original video.
A current video generating module 230, configured to synthesize the video frame and the audio frame, and generate a current video.
A reverse order video obtaining module 240, configured to store the current video in a reverse order by the video, and obtain a reverse order video of the original video.
Further, the reverse order video obtaining module 240 includes: the data storage submodule and the reverse order video acquisition submodule, wherein:
and the data storage submodule is used for acquiring first frame data of the current video, and storing the first frame data as the last frame data of the reverse video of the original video.
And the reverse-order video obtaining submodule is used for repeatedly executing the steps of obtaining the (N + 1) th frame data of the current video, storing the (N + 1) th frame data as the (N + 1) th frame data of the reverse-order video of the original video, and obtaining the reverse-order video of the original video until the current video is completely stored, wherein N is a positive integer which is sequentially increased.
Further, the reverse order video acquiring apparatus 200 includes: video duration acquisition module and reverse order video save module, wherein:
and the video duration acquisition module is used for acquiring the video duration corresponding to the original video as a first duration and acquiring the video duration corresponding to the reverse video of the original video as a second duration.
And the reverse order video storage module is used for deleting the original video and storing the reverse order video of the original video when the first duration is consistent with the second duration.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses and modules may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, the coupling between the modules may be electrical, mechanical or other type of coupling.
In addition, functional modules in the embodiments of the present application may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.
Referring to fig. 9, a block diagram of an electronic device 100 according to an embodiment of the present disclosure is shown. The electronic device 100 may be a smart phone, a tablet computer, an electronic book, or other electronic devices capable of running an application. The electronic device 100 in the present application may include one or more of the following components: a processor 110, a memory 120, a touch screen 130, a camera 140, and one or more applications, wherein the one or more applications may be stored in the memory 120 and configured to be executed by the one or more processors 110, the one or more programs configured to perform the methods as described in the aforementioned method embodiments.
The processor 110 may be implemented in the form of at least one hardware of a Digital Signal Processing (DSP), a Field Programmable Gate Array (FPGA), a Programmable logic Array (GPU), a modem, or the like, wherein the CPU primarily handles operating systems, user interfaces, applications, and the like, the modem is used for rendering and rendering content, the modem is used for rendering content, and the like, and the wireless communication device may be implemented in a single communication chip, or a combination of several of the above-described modems, wherein the CPU primarily handles operating systems, user interfaces, applications, and the like, the modem is used for rendering and rendering content, and the wireless communication device 110 may be implemented in a single communication chip.
The Memory 120 may include a Random Access Memory (RAM) or a Read-Only Memory (Read-Only Memory). The memory 120 may be used to store instructions, programs, code sets, or instruction sets. The memory 120 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for implementing at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing various method embodiments described below, and the like. The data storage area may also store data created by the electronic device 100 during use (e.g., phone book, audio-video data, chat log data), and the like.
The touch screen 130 is used to Display information input by a user, information provided to the user, and various graphical user interfaces of the electronic device 100, which may be composed of graphics, text, icons, numbers, video, and any combination thereof, and in one example, the touch screen 130 may be a liquid Crystal Display (L liquid Crystal Display, L CD) or an Organic light Emitting Diode (Organic L light-Emitting Diode, O L ED), which is not limited herein.
Referring to fig. 10, a block diagram of a computer-readable storage medium according to an embodiment of the present application is shown. The computer-readable medium 300 has stored therein a program code that can be called by a processor to execute the method described in the above-described method embodiments.
The computer-readable storage medium 300 may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read only memory), an EPROM, a hard disk, or a ROM. Alternatively, the computer-readable storage medium 300 includes a non-volatile computer-readable storage medium. The computer readable storage medium 300 has storage space for program code 310 for performing any of the method steps of the method described above. The program code can be read from or written to one or more computer program products. The program code 310 may be compressed, for example, in a suitable form.
To sum up, the reverse order video obtaining method, the reverse order video obtaining device, the electronic device and the storage medium provided by the embodiment of the application obtain an original video, extract a video frame from the original video, extract an audio frame from the original video, synthesize the video frame and the audio frame to generate a current video, store the current video in a reverse order manner, obtain a reverse order video of the original video, thereby generate the current video by extracting a data frame from the original video, and store the current video in the reverse order manner to obtain the reverse order video of the original video, thereby realizing rapid and convenient obtaining of the reverse order video.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A reverse order video acquisition method is applied to an electronic device, and comprises the following steps:
acquiring an original video;
extracting video frames from the original video and extracting audio frames from the original video;
synthesizing the video frame and the audio frame to generate a current video;
and storing the current video in a reverse order mode to obtain the reverse order video of the original video.
2. The method of claim 1, wherein the saving the current video in reverse order to obtain the reverse video of the original video comprises:
acquiring first frame data of the current video, and storing the first frame data as the last frame data of the reverse video of the original video;
and repeating the steps of acquiring the (N + 1) th frame data of the current video, storing the (N + 1) th frame data as the (N + 1) th frame data of the reverse order video of the original video, and acquiring the reverse order video of the original video when the current video is completely stored, wherein N is a positive integer which is sequentially increased.
3. The method of claim 1, wherein the electronic device comprises a camera, and wherein the obtaining of the raw video comprises:
collecting video data through the camera;
performing time delay processing on the video data acquired by the camera to acquire time delay video data;
and acquiring the original video based on the delayed video data.
4. The method of claim 3, wherein after the capturing video data by the camera, further comprising:
performing video optimization processing on the video data acquired by the camera to acquire optimized video data;
and acquiring the original video based on the optimized video data.
5. The method according to claim 4, wherein the video optimization processing includes video blurring processing, and the performing video optimization processing on the video data collected by the camera to obtain optimized video data includes:
detecting video data collected by the camera;
when the fact that the video data collected by the camera comprises portrait data is detected, video blurring processing is conducted on the video data collected by the camera, and blurring video data are obtained.
6. The method of any of claims 1-5, wherein said obtaining the original video comprises:
starting a camera application program and displaying a display interface corresponding to the camera application program;
detecting an operation acting on the display interface;
and when detecting that the operation acted on the display interface meets the specified operation, acquiring the original video.
7. The method according to any one of claims 1-5, wherein the saving the current video in reverse order further comprises, after obtaining the reverse order video of the original video:
acquiring video time corresponding to the original video as first time, and acquiring video time corresponding to a reverse video of the original video as second time;
and when the first duration is consistent with the second duration, deleting the original video and storing the reverse video of the original video.
8. A reverse order video acquisition device is applied to an electronic device, and the device comprises:
the original video acquisition module is used for acquiring an original video;
the data extraction module is used for extracting video frames from the original video and extracting audio frames from the original video;
the current video generation module is used for synthesizing the video frame and the audio frame to generate a current video;
and the reverse order video obtaining module is used for storing the current video in a reverse order mode by the video to obtain the reverse order video of the original video.
9. An electronic device comprising a memory and a processor, the memory coupled to the processor, the memory storing instructions that, when executed by the processor, the processor performs the method of any of claims 1-7.
10. A computer-readable storage medium, having stored thereon program code that can be invoked by a processor to perform the method according to any one of claims 1 to 7.
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| CN114205668B (en) * | 2021-12-13 | 2024-06-04 | 广州博冠信息科技有限公司 | Video playing method, device, electronic equipment and computer readable medium |
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