CN113923473A - Video and audio playing method and device, electronic equipment and storage medium - Google Patents
Video and audio playing method and device, electronic equipment and storage medium Download PDFInfo
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- CN113923473A CN113923473A CN202111144267.4A CN202111144267A CN113923473A CN 113923473 A CN113923473 A CN 113923473A CN 202111144267 A CN202111144267 A CN 202111144267A CN 113923473 A CN113923473 A CN 113923473A
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- 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
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
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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
- H04L65/80—Responding to QoS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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- 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
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/26208—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints
- H04N21/26233—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints involving content or additional data duration or size, e.g. length of a movie, size of an executable file
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- 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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/488—Data services, e.g. news ticker
- H04N21/4884—Data services, e.g. news ticker for displaying subtitles
Abstract
The invention provides a video and audio playing method, a video and audio playing device, electronic equipment and a storage medium, wherein the method comprises the following steps: extracting an audio file from a video file to be uploaded; and respectively sending the audio file and the video file to a cloud end so that the cloud end provides playing service for the video and audio playing end based on the received audio file in the transmission process of the video file. According to the method, the device, the electronic equipment and the storage medium, the audio file occupies a smaller space, so that the audio file can be transmitted and completed before the video file, the cloud end can provide playing service based on the audio file, and the problems that in the traditional method, the user waits for the video file to be transmitted and then plays the video file, so that the waiting time of the user is too long and the experience feeling is poor are solved.
Description
Technical Field
The present invention relates to the field of video playing technologies, and in particular, to a method and an apparatus for playing video and audio, an electronic device, and a storage medium.
Background
With the continuous improvement of internet information technology application, high-definition videos such as 2k and 4k are rapidly developed. Currently, when playing a video, the video file in the cloud is usually played after the video file is successfully uploaded to the cloud.
However, the video file is usually large, and uploading to the cloud end takes a long time, so that the video file cannot be played in time, and the user experience is poor.
Disclosure of Invention
The invention provides a video and audio playing method and device, electronic equipment and a storage medium, which are used for solving the defect of poor user experience caused by the fact that a video file cannot be played in time in the prior art.
The invention provides a video and audio playing method, which is applied to a video and audio distribution end and comprises the following steps:
extracting an audio file from a video file to be uploaded;
and respectively sending the audio file and the video file to a cloud end, so that the cloud end provides playing service for a video and audio playing end based on the received audio file in the transmission process of the video file.
According to the audio and video playing method provided by the invention, the step of respectively sending the audio file and the video file to a cloud comprises the following steps:
determining a transmission mode of the audio file and the video file based on the current network quality and/or the size of the video file;
and respectively sending the audio file and the video file to a cloud terminal based on the transmission mode.
According to the audio and video playing method provided by the invention, the transmission mode is that the audio file is transmitted first and then the video file is transmitted;
based on the transmission mode, the audio file and the video file are respectively sent to a cloud, and the method comprises the following steps:
sending the audio file to the cloud;
and if a video transmission request sent by the cloud is received, sending the video file to the cloud, wherein the video transmission request is sent after the cloud receives a playing service request sent by the video and audio playing end.
The invention provides a video and audio playing method, which is applied to a cloud and comprises the following steps:
receiving an audio file and a video file, wherein the audio file is extracted from the video file by a video and audio distribution terminal;
and in the receiving process of the video file, providing playing service for the video and audio playing end based on the received audio file.
According to the audio and video playing method provided by the invention, the receiving of the audio file and the video file further comprises the following steps:
generating a subtitle of the video file based on the received audio file;
and after the transmission of the video file is finished, providing playing service for the video and audio playing end based on the subtitle and the received video file.
The invention provides a video and audio playing method, which is applied to a video and audio playing end and comprises the following steps:
sending a playing service request to a cloud end to trigger the cloud end to determine a target video file corresponding to the playing service request, and providing playing service to a video playing end based on a received audio file in the process that the video publishing end transmits the target video file to the cloud end, wherein the audio file is extracted from the target video file by the video publishing end;
and receiving the playing service provided by the cloud.
According to the audio and video playing method provided by the invention, the sending of the playing service request to the cloud comprises the following steps:
inquiring the target video file at the local position of the video and audio playing end;
if the target video file does not exist, sending a playing service request to a cloud end;
and if the target video file exists, video playing is carried out based on the locally stored target video file.
The invention provides a video-audio playing device, which is arranged at a video-audio distribution end and comprises:
the device comprises an extraction unit, a storage unit and a processing unit, wherein the extraction unit is used for extracting an audio file from a video file to be uploaded;
the first sending unit is used for sending the audio file and the video file to a cloud end respectively so that the cloud end can provide playing service for a video and audio playing end based on the received audio file in the transmission process of the video file.
The invention provides a video and audio playing device, which is arranged at a cloud end and comprises:
the receiving unit is used for receiving an audio file and a video file, wherein the audio file is extracted from the video file by a video and audio distribution terminal;
and the providing unit is used for providing playing service for the video and audio playing end based on the received audio file in the receiving process of the video file.
The invention provides a video-audio playing device, which is arranged at a video-audio playing end and comprises:
the second sending unit is used for sending a playing service request to a cloud end so as to trigger the cloud end to determine a target video file corresponding to the playing service request, and providing playing service to an audio and video playing end based on a received audio file in the process that the audio and video publishing end transmits the target video file to the cloud end, wherein the audio file is extracted from the target video file by the audio and video publishing end;
and the playing unit is used for receiving the playing service provided by the cloud.
The invention also provides an electronic device, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor executes the program to realize the steps of any one of the video and audio playing methods.
The present invention also provides a non-transitory computer readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the steps of any of the above-mentioned audio-visual playback methods.
The invention also provides a computer program product, comprising a computer program, wherein the computer program realizes the steps of the video and audio playing method when being executed by a processor.
According to the audio and video playing method, the audio and video playing device, the electronic equipment and the storage medium, after the audio file of the video file to be uploaded is extracted, the audio file and the video file are respectively sent to the cloud end, so that the cloud end provides playing service for the audio and video playing end based on the received audio file in the transmission process of the video file. The audio file occupies a small space, so that the audio file can be transmitted and completed before the video file, the cloud end can provide playing service based on the audio file, and the problems that in the traditional method, the user waits for the video file to be transmitted and then plays the video file, so that the waiting time of the user is too long, and the experience feeling is poor are solved.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of an audio/video playing method according to the present invention;
FIG. 2 is a schematic diagram of a chunk structure provided by the present invention;
FIG. 3 is a flow chart of a method for transmitting audio files and video files according to the present invention;
FIG. 4 is a second schematic flow chart of the video/audio playing method according to the present invention;
FIG. 5 is a third schematic flow chart of an audio/video playing method according to the present invention;
FIG. 6 is a fourth schematic flowchart of a video/audio playing method according to the present invention;
FIG. 7 is a schematic structural diagram of an audio/video playback device according to the present invention;
fig. 8 is a second schematic structural diagram of the audio/video playing device provided by the present invention;
fig. 9 is a third schematic structural diagram of an audio/video playing device provided by the present invention;
fig. 10 is a schematic structural diagram of an electronic device provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
With the rapid development of high-definition videos such as 2k videos, 4k videos and the like, the occupied space of the video files is larger and larger. The traditional video and audio playing method comprises the following steps: after the video file is published by the video and audio publishing terminal, the video file is transmitted to the cloud. When a user needs to play a video file, a video playing request is sent to the cloud end through the video and audio playing end, and after the cloud end receives the video playing request, if the transmitted video file exists in the inquiry, the corresponding video file is played. The video and audio distribution end and the video and audio playing end can be the same type of application or different types of applications, for example, the video and audio distribution end and the video and audio playing end can be a client or a web page end.
However, since the video file occupies a large space, it takes a long time to upload the video file to the cloud. If the video file is not transmitted completely after the cloud receives the video playing request, the cloud needs to wait for the video file to be played after the video transmission is completed, and therefore the user needs to wait for a long time, and the user experience is poor.
Accordingly, the invention provides a video and audio playing method. Fig. 1 is a schematic flow chart of an audio-video playing method provided by the present invention, and as shown in fig. 1, the method is applied to an audio-video distribution end, and includes the following steps:
Here, the to-be-uploaded video file refers to a video file to be played, which is issued by a video and audio issuing end, and the video file can be played at the video and audio playing end and also can be played at the cloud end.
When the audio file of the video file is extracted, the parsing protocol of the video file can be determined according to the packaging format of the video file, then the field used for extracting the audio file in the video file is located according to the parsing protocol, and the audio file of the video file is extracted from the field.
For example, if the package format of the video file is MP4 format, it can be known that the field for extracting the audio file is stored in mdat.
It can be understood that the video and audio publishing terminal can extract the audio file of the video file immediately when detecting that a new video file exists; or whether a new video file exists can be periodically detected, and if so, the audio files of the plurality of video files are extracted in batch.
In addition, before step 110 is executed, it may be determined in advance whether the video file meets the requirement for fast audio extraction, and if so, it indicates that the audio file can be fast extracted from the video file. If not, the audio file cannot be extracted from the video file, or the speed of extracting the audio file is low; when the speed of extracting the audio file is slow, the time length of extracting the audio file can be prolonged, and further the time length of waiting for playing the audio file by a user can be prolonged. When the video file does not meet the requirement of rapidly extracting the audio, the audio file can not be extracted from the video file, so that the problem that the waiting time of a user is prolonged due to the fact that the audio file cannot be extracted or the time for extracting the audio file is too long is solved.
The requirement for fast audio extraction may be that the video file is in a target package format (MP4 format, FLV format, etc.), and the format of the audio file to be extracted is in a target format (acc format, m4a format, MP3 format, etc.).
And step 120, respectively sending the audio file and the video file to a cloud end, so that the cloud end provides playing service for the video and audio playing end based on the received audio file in the transmission process of the video file.
Specifically, the size of the audio file is much smaller than that of the video file, so that under the same transmission condition, the transmission time required by the audio file is much shorter than that of the video file, and the audio file can be transmitted before the video file.
Therefore, at the end of the audio file transmission, the video file is still in the transmission state, i.e. the video file is not completely transmitted. If the cloud provides the playing service for the audio-video playing terminal after the transmission of the video file is completed, longer waiting time is consumed, and the user experience is poor.
In contrast, after the audio file is transmitted, the cloud can provide playing service for the audio and video playing terminal based on the received audio file. For example, before the video file is not transmitted, the cloud end can play the audio file first, and after the video file is transmitted, the video file is switched to the video file for playing, so that the problems that in the traditional method, the user waits for the video file to be transmitted and then plays the video file, the waiting time of the user is too long, and the experience feeling is poor can be avoided.
For example, for a video file of a skill, such as a video file of a talk show, etc., a demand degree of a user for listening is higher than a demand degree of a user for watching, and an audio file of the video file can meet the demand degree of the user for listening to such a video, so that the audio file of such a video file can be played first in the transmission process of such a video file, not only can the demand of the user be met, but also the problem that the user waits for the video file to be played after the video file is transmitted, so that the waiting time of the user is too long and the experience feeling is poor can be avoided.
Moreover, the subtitles corresponding to the video file can also be extracted from the audio file, so that after the audio file is transmitted to the cloud, the cloud can extract the corresponding subtitles based on the audio file, and after the video file is transmitted to the cloud, the subtitles can be immediately synchronized to the video file. Therefore, in the process of transmitting the video file, the embodiment of the invention extracts the subtitles based on the audio file without additionally extracting the subtitles after the transmission of the video file is finished, so that the time for additionally extracting the subtitles is saved, the video file can be played after the transmission of the video file is finished, and the playing delay of the video file is shortened.
According to the audio and video playing method provided by the embodiment of the invention, after the audio file of the video file to be uploaded is extracted, the audio file and the video file are respectively sent to the cloud end, so that the cloud end provides playing service for an audio and video playing end based on the received audio file in the transmission process of the video file. The audio file occupies a small space, so that the audio file can be transmitted and completed before the video file, the cloud end can provide playing service based on the audio file, and the problems that in the traditional method, the user waits for the video file to be transmitted and then plays the video file, so that the waiting time of the user is too long, and the experience feeling is poor are solved.
Based on the foregoing embodiments, an embodiment of the present invention provides an audio extraction method for a video file in an MP4 format, which includes the following steps:
table 1 is a comparison table of internal data structures of MP4 formatted video files, and as shown in table 1, the internal data structure of MP4 formatted video files is composed of a plurality of "boxes", wherein a large box stores a small box, and the large box is nested one level at a time to store media information.
TABLE 1
The description is now directed to the portion box in table 1:
(1) the hdlr Box (Handler Reference Box) under the trak Box is used to explain the playing process information of the media, and table 2 is a comparison table of fields in hdlr, as shown in table 2, the hdlr Box has a Handler type, and when the content is sound, the trak Box is an audio trak.
TABLE 2
(2) The stbl contains information about all the time and location of samples in the track, and information about codec of the samples, etc. for explaining the timing, type, size and location of the samples in the respective storage containers.
The audiosamplentry field may contain channel count, samplesize, and samplerate of the audio to be read. Some audio will have a sampling rate of 48/24khz (or 24000- >48000HZ) mainly because SBR information is included in the AAC of this video file, i.e. it is HE-AAC LC, and some SBR will have its sampling frequency doubled.
In the header information of the file, there is an extensionsamplerate field in the esds, which is the true sampling frequency.
(3) The ESDs (Element Stream Descriptors, ESDs) can be divided into three layers, each layer has a containment relationship, and the esdescriptors, DecoderConfig, Descriptors, decspeccificinfotag can be taken to Audio Object Types, sampling _ frequency _ index and channel configuration.
(4) stsz (sample Size box): the size of each sample is defined, including the number of total samples in the media and a table giving the size of each sample. This box is relatively bulky. Wherein, table 3 is a structure comparison table of stsz.
TABLE 3
(5) stsc (sample To Chunk Box): organizing samples with chunks may facilitate optimizing data acquisition, with a chunk containing one or more samples. The mapping relation between sample and chunk is described in "stsc" by a table, and looking at the table, the chunk containing the specified sample can be found, so that the sample can be found. Table 4 shows a structural comparison table of stsc.
TABLE 4
| Field(s) | Length (byte) | Description of the invention |
| Size of | 4 | Number of bytes of this atom |
| Type (B) | 4 | stsc |
| Version(s) | 1 | Version of this atom |
| Sign (sign) | 3 | Here is 0 |
| Number of |
4 | Number of sample-to-chunk |
| sample-to-chunk | / | Structure of sample-to-chunk table |
| |
4 | The first chunk sequence number used by this table |
| Samples per |
4 | Number of samples in current chunk |
| |
4 | The sequence numbers of sample descriptions associated with these samples |
As shown in fig. 2, each chunk includes one or more samples, and the minimum unit of the audio stream is a sample, so that after each sample is located, the audio data therein can be extracted. However, the mdat box has a video stream in addition to an audio stream, and is stored in the mdat irregularly and unordered. For this purpose, the trak box of the audio in which all the information of the audio is recorded can be located.
In addition, the start address and size of each audio sample can be determined according to the stsc and the stss box, sample data can be extracted from the mdat based on the information, but the directly extracted sample data is an audio naked stream and cannot be directly played, a header is required to be added for playing, if the audio format is aac, an add header (7 bytes) needs to be added for each audio sample, the samples are spliced together to synthesize an aac audio file, and the audio extraction is completed. Wherein the audio file size may be calculated based on the following formula:
where size denotes the audio size, n denotes the number of samples, and sample denotes the size of the ith sample.
Table 5 shows that the audio file extraction time is longer for the larger the video file, as shown in table 5.
TABLE 5
| Serial number | Video file size | Duration of time | Analysis | Extraction time | |
| 1 | 29.2M | 1min 47s | 0.3s | 1.57 |
|
| 2 | 475M | 10min 46s | 2.6s | 4.5 |
|
| 3 | 1.87G | 1h 59min 45s | 4.9s | 25.7 |
|
| 4 | 2.14G | | 8s | 40s | |
| 5 | 3.25G | 3h 25min 43s | 8.7s | 37.7 |
|
| 6 | 6.51G | 5h 55min 26s | 19s | 66s |
Based on the foregoing embodiments, an embodiment of the present invention provides an audio extraction method for a video file in an FLV format, which includes:
table 6 is a structure comparison table of the video file in the FLV format, and as shown in table 6, the file extension of the FLV format is. FLV. The video file of the FLV format is mainly composed of an FLV Header and an FLV Body composed of a plurality of tags.
TABLE 6
Furthermore, all FLV format files begin with an FLV Header. The FLV Header type is FLVHEADER for judging whether the Header is determined to be in the FLV video format, and table 7 is a structure comparison table of FLVHEADER.
TABLE 7
| Field(s) | Type (B) | Description of the invention |
| Signature | UI8 | ′F'(0x46) |
| Signature | UI8 | ′L′(0x4C) |
| Signature | UI8 | ′V′(0x56) |
| Version | UI8 | FLV version. For example, 0x01 denotes |
| TypeFlags | UI8 | b[0]Whether or not there is a video stream b [2 ]]Whether other fields of the audio stream are reserved and the value is 0 |
| DataOffset | UI32 | FLV Header Length (byte) |
For a video file in FLV format, except for the beginning FLV Header, the remainder is the FLV Body. The FLV Body consists of a series of back-pointer and tag interlaces. Wherein, back-pointer represents the previous tag size. The FLV Body type is FLVBODY, and Table 8 is a structure comparison table of FLVBODY.
TABLE 8
In addition, the FLV Tag contains audio, video or script metadata, optional encryption metadata and payload. The FLV Tag type is FLVTAG, Table 9 is a structure comparison table of FLVTAG, and Table 10 is a structure comparison table of AudioTagHeader.
TABLE 9
Watch 10
AUDIODATA contains a Body field. If encryption is used, the type of Body is EncryptedBody, and if encryption is not used, the type of Body is AudioTagBody. Table 11 shows a structure comparison table of AUDIODATA, and Table 12 shows a structure comparison table of AudioTagBody.
TABLE 11
TABLE 12
In summary, the audio file of the video file is generated by reading the audio clip content in the AudioTagBody and adding the audio information of the specified format to the audio clip according to the AudioTagHeader.
Based on any of the above embodiments, fig. 3 is a schematic flow chart of the audio file and video file transmission method provided by the present invention, and as shown in fig. 3, step 120 includes:
and step 122, respectively sending the audio file and the video file to a cloud terminal based on a transmission mode.
Specifically, the current network quality can affect the transmission speed of the audio file and the video file, and the better the current network quality is, the audio file and the video file can be rapidly transmitted to the cloud end through the current network. The worse the current network quality is, the longer the time consumption is, the transmission mode that the audio file is transmitted firstly and then the video file is transmitted can be selected to transmit at the moment, so that the smaller audio file can be transmitted to the cloud terminal preferentially, the cloud terminal provides playing service based on the received audio file, and the problem that the video playing time is long when the audio file and the video file are transmitted simultaneously is avoided, because the video file is larger, the transmission delay is caused, and the audio file and the target file can not be transmitted to the cloud terminal in time, so that a user waits for the video playing time.
In addition, the size of the video file affects the transmission speed of the video file, and the smaller the video file is, the longer the transmission time of the video file is, and at this time, the transmission mode of simultaneously transmitting the audio file and the video file can be selected for transmission. The larger the video file is, the longer the transmission time of the video file is, at the moment, the transmission mode of firstly transmitting the audio file and then transmitting the video file can be selected for transmission, so that the smaller audio file can be preferentially and quickly transmitted to the cloud, the cloud provides playing service based on the received audio file, and the problem that the user waits for the video playing time to be longer due to the fact that the audio file and the target file cannot be timely transmitted to the cloud due to the fact that the video file is larger when the audio file and the video file are transmitted simultaneously is avoided.
Furthermore, the transmission mode can be determined by combining the current network quality and the size of the video file, wherein the current network quality is used for evaluating the file transmission speed, and the size of the video file is used for evaluating the file transmission time consumption. If the video file is large, but the current network quality is good, the transmission efficiency of the audio file cannot be influenced by the parallel transmission of the audio file and the video file, and at the moment, a transmission mode for simultaneously transmitting the audio file and the video file can be selected for transmission. If the video file is large and the current network quality is poor, in order to influence the transmission efficiency of the audio file due to the parallel transmission of the audio file and the video file, a transmission mode of firstly transmitting the audio file and then transmitting the video file can be selected for transmission.
Based on any embodiment, the transmission mode is that the audio file is transmitted first and then the video file is transmitted;
based on transmission mode, send audio file and video file to high in the clouds respectively, include:
sending the audio file to a cloud;
and if a video transmission request sent by the cloud is received, sending the video file to the cloud, wherein the video transmission request is sent after the cloud receives a playing service request sent by the video and audio playing end.
Specifically, consider that the audio file is less than the video file, audio file is short consuming time than the transmission of video file to can adopt the transmission mode of transmitting audio file earlier and then transmitting the video file to transmit, be about to audio file transmit to the high in the clouds back, the high in the clouds can play audio file earlier, avoids user's latency overlength to lead to experiencing the relatively poor problem.
If the user needs to play the video file, the user can send a playing service request to the cloud end through the video and audio playing end, and after receiving the playing service request, the cloud end sends a video transmission request to the video and audio publishing end, so that the video and audio publishing end sends the video file to the cloud end.
In the process of transmitting the video file, the audio file can be played first, the corresponding subtitle is extracted based on the audio file, after the transmission of the video file is completed, the subtitle is synchronized to the video file, and the played audio file is switched into the video file.
It can be understood that if the cloud does not receive the playing service request, it indicates that the playing audio file can meet the user requirement, and at this time, the video file may not be transmitted temporarily, or the video file may be transmitted again when the current network quality is good.
Fig. 4 is a second schematic flow chart of the audio/video playing method provided by the present invention, and as shown in fig. 4, the present invention provides an audio/video playing method, which is applied to a cloud, and includes the following steps:
Here, the video file refers to a video file to be played, which is issued by the video and audio distribution end, and the audio file is extracted from the video file by the video and audio distribution end.
When the audio file of the video file is extracted at the video and audio publishing terminal, the parsing protocol of the video file can be determined according to the packaging format of the video file, then the field for extracting the audio file in the video file is positioned according to the parsing protocol, and the audio file of the video file is extracted from the field.
It can be understood that the video and audio publishing terminal can extract the audio file of the video file immediately when detecting that a new video file exists; or whether a new video file exists can be periodically detected, and if so, the audio files of the plurality of video files are extracted in batch.
In addition, before the audio file is extracted by the audio and video distribution end, whether the video file meets the requirement of rapidly extracting the audio can be judged in advance, and if so, the audio file can be rapidly extracted from the video file. If not, the audio file cannot be extracted from the video file or the speed of extracting the audio file is low, so that the audio file can be ensured to be extracted from the video file quickly.
In addition, the size of the audio file is smaller than that of the video file, so that the cloud end can receive the audio file firstly under the same transmission condition.
Therefore, when the cloud receives the audio file transmission, the video file is still in a transmission state, namely the video file is not transmitted completely. If the cloud provides the playing service for the audio-video playing terminal after the transmission of the video file is completed, longer waiting time is consumed, and the user experience is poor.
In contrast, after the cloud receives the audio file, the cloud can provide playing service for the audio and video playing terminal based on the received audio file. For example, before the video file is not transmitted, the cloud end can play the audio file first, and after the video file is transmitted, the video file is switched to the video file for playing, so that the problems that in the traditional method, the user waits for the video file to be transmitted and then plays the video file, the waiting time of the user is too long, and the experience feeling is poor can be avoided.
Moreover, the subtitles corresponding to the video file can be extracted from the audio file, so that after the audio file is transmitted to the cloud, the cloud can extract the corresponding subtitles based on the audio file, and after the video file is transmitted to the cloud, the subtitles can be immediately synchronized to the video file without waiting for the video file to be transmitted to the cloud and then extracting the corresponding subtitles from the video file.
According to the audio and video playing method provided by the embodiment of the invention, in the transmission process of the video file, the cloud provides playing service for the audio and video playing terminal based on the received audio file. The audio file occupies a small space, so that the audio file can be transmitted and completed before the video file, the cloud end can provide playing service based on the audio file, and the problems that in the traditional method, the user waits for the video file to be transmitted and then plays the video file, so that the waiting time of the user is too long, and the experience feeling is poor are solved.
Based on any of the above embodiments, fig. 5 is a third schematic flow chart of video playing provided by the present invention, as shown in fig. 5, after receiving an audio file and a video file, the method further includes:
and step 520, after the transmission of the video file is finished, providing playing service for the video and audio playing end based on the subtitles and the received video file.
Specifically, after the audio file is received at the cloud, voice recognition can be performed on the audio file to obtain a transcription text of the audio file, and a subtitle of the video file is generated based on start-stop time information of each clause carried in the transcription text.
After the transmission of the video file is finished, the subtitle is synchronized to the video file, and the video file is played, so that the playing service is provided for the video and audio playing end. Therefore, in the process of transmitting the video file, the embodiment of the invention extracts the subtitles based on the audio file without additionally extracting the subtitles after the transmission of the video file is finished, so that the time for additionally extracting the subtitles is saved, the video file can be played after the transmission of the video file is finished, and the playing delay of the video file is shortened.
Fig. 6 is a fourth schematic flow chart of the audio-video playing method provided by the present invention, and as shown in fig. 6, the present invention provides an audio-video playing method, which is applied to an audio-video playing end, and includes:
and step 620, receiving the playing service provided by the cloud.
Here, the video and audio playing end may be a client end or a web page end. When a user needs the cloud to provide playing service, a playing service request can be sent to the cloud through the video playing end, and if the user clicks a playing button corresponding to a target video file at a video playing end point, the video playing end is triggered to send the playing service request to the cloud.
The playing service request carries identification information (such as a name and a number of the target video file) of the target video file, so that the cloud end can determine the corresponding target video file based on the identification information after receiving the playing service request sent by the video and audio playing end.
The target video file refers to a video file to be played and issued by the video and audio issuing end, and the audio file is extracted from the target video file by the video and audio issuing end.
When the audio file of the target video file is extracted from the audio and video publishing terminal, the parsing protocol of the target video file can be determined according to the packaging format of the target video file, then the field used for extracting the audio file in the target video file is positioned according to the parsing protocol, and the audio file of the target video file is extracted from the field.
It can be understood that the video and audio publishing terminal can immediately extract the audio file of the target video file when detecting that a new target video file exists; or periodically detecting whether a new target video file exists, and if so, extracting the audio files of the plurality of target video files in batch.
After the audio file is extracted at the audio and video distribution end, the audio file and the target video file can be sent to the cloud end, and the audio file is smaller than the target video file in size, so that the audio file can be transmitted to the cloud end before the target video file under the same transmission condition.
Therefore, at the end of the audio file transmission, the target video file is still in the transmission state, i.e. the target video file is not completely transmitted. If the cloud provides the playing service for the video and audio playing end after the transmission of the target video file is finished, longer waiting time is consumed, and the user experience is poor.
In contrast, if the cloud receives the play service request, whether the transmission of the audio file corresponding to the target video file is completed can be queried, and if so, the cloud can provide play service for the audio and video player based on the received audio file. For example, before the target video file is not transmitted, the cloud end can play the audio file first, and after the target video file is transmitted, the cloud end switches to the target video file to play, so that the problems that in a traditional method, a user waits for the target video file to be transmitted and then plays the video file, and the waiting time of the user is too long and the experience feeling is poor can be avoided.
The video and audio playing method provided by the embodiment of the invention receives the playing service provided by the audio file based on the target video file in the transmission process of the target video file by the cloud. The audio file occupies a small space, so that the audio file can be transmitted and completed before the target video file, the cloud end can provide playing service based on the audio transmission file, and the problems that in the traditional method, the user waits for the transmission of the target video file and then plays the video file, so that the waiting time of the user is too long, and the experience feeling is poor are solved.
Based on any one of the above embodiments, sending a play service request to the cloud, includes:
inquiring a target video file in the local where the video and audio playing end is located;
if the target video file does not exist, sending a playing service request to the cloud;
and if the target video file exists, video playing is carried out based on the locally stored target video file.
Specifically, when a user needs to provide a playing service, the user firstly queries the local where the video and audio playing end is located, and if a target video file exists locally, the user can directly play the video based on the locally stored target video file.
If the target video file does not exist locally, the target video file cannot be played locally, and at the moment, the video file can be played through the cloud end, namely, a playing service request is sent to the cloud end.
After the cloud receives the playing service request, if the target video file is stored in the cloud, the target video file can be directly played; if the target video file does not exist in the cloud, the cloud can play the corresponding audio file at the moment, and then play the target video file after the target video file is transmitted.
Based on any of the above embodiments, the present invention provides an audio-video playing method, where the audio-video playing end may be a web page end or a client end, the method including:
when the video and audio publishing end publishes the target video file, the video and audio publishing end extracts the audio file of the target video file and sends the audio file to the cloud when judging that the target video file meets the requirement of rapidly extracting the audio.
If the webpage end needs to play audio and video, a playing service request is sent to the cloud end, the cloud end preferentially provides service for playing the audio file, and after the webpage end receives the video playing request, the audio and video distribution end is triggered to send the target video file to the cloud end, so that the cloud end switches the played audio file into the target video file after receiving the target video file.
If the client needs to play audio and video, the audio file is preferentially played, after the client receives a video playing request, whether a target video file exists is inquired locally where the client is located, if yes, video playing is carried out based on the locally stored target video file, and if not, a playing service request is sent to the cloud, and the target video file stored in the cloud is played. And if the target video file does not exist in the cloud, playing the audio file.
Based on any one of the above embodiments, the present invention provides an audio-video playing method, where the method performs audio-video playing based on an audio-video playing end, an audio-video publishing end, and a cloud end, and specifically includes:
when the video file is released by the video and audio publishing end, the video and audio publishing end extracts the audio file of the video file and sends the audio file and the video file to the cloud when judging that the video file meets the requirement of rapidly extracting the audio.
If the user needs to play the audio and video, a playing service request is sent to the cloud end through the audio and video playing end, after the cloud end receives the playing service request, in the process of transmitting the video file, playing service is provided for the audio and video playing end based on the audio file which is transmitted, and after the video file is transmitted, the played audio file is switched to the video file.
The following describes the video playback device provided by the present invention, and the video playback device described below and the video playback method described above can be referred to in correspondence with each other.
Fig. 7 is a schematic structural diagram of an audio-visual playing device provided by the present invention, and as shown in fig. 7, the present invention provides an audio-visual playing device, which is installed at an audio-visual distribution end, and includes:
an extracting unit 710 for extracting an audio file from a video file to be uploaded;
the first sending unit 720 is configured to send the audio file and the video file to a cloud respectively, so that the cloud provides a playing service for a video and audio playing end based on the received audio file in the transmission process of the video file.
According to any of the above embodiments, the first sending unit 720 includes:
a transmission mode determining unit, configured to determine a transmission mode of the audio file and the video file based on current network quality and/or a size of the video file;
and the transmission unit is used for respectively transmitting the audio file and the video file to a cloud terminal based on the transmission mode.
Based on any of the above embodiments, the transmission mode is to transmit the audio file first and then transmit the video file;
the transmission unit is configured to:
sending the audio file to the cloud;
and if a video transmission request sent by the cloud is received, sending the video file to the cloud, wherein the video transmission request is sent after the cloud receives a playing service request sent by the video and audio playing end.
Fig. 8 is a second schematic structural diagram of the audio-video playing device provided by the present invention, and as shown in fig. 8, the present invention provides an audio-video playing device, which is installed in a cloud, and includes:
a receiving unit 810, configured to receive an audio file and a video file, where the audio file is extracted from the video file by an audio and video distribution end;
the providing unit 820 is configured to provide a playing service for the video and audio playing terminal based on the received audio file in the receiving process of the video file.
Based on any embodiment above, the apparatus further comprises:
a subtitle generating unit for generating a subtitle of the video file based on the received audio file after receiving the audio file and the video file;
and the playing subunit is used for providing playing service for the video and audio playing end based on the subtitles and the received video file after the transmission of the video file is finished.
Fig. 9 is a third schematic structural diagram of an audio-visual playing device provided by the present invention, and as shown in fig. 9, the present invention provides an audio-visual playing device, which is installed at an audio-visual playing end, and includes:
a second sending unit 910, configured to send a play service request to a cloud to trigger the cloud to determine a target video file corresponding to the play service request, and provide, in a process of transmitting the target video file to the cloud by an audio and video distribution end, a play service to the audio and video playing end based on a received audio file, where the audio file is extracted from the target video file by the audio and video distribution end;
the playing unit 920 is configured to receive a playing service provided by the cloud.
Based on any of the above embodiments, the second sending unit 910 is configured to:
inquiring the target video file at the local position of the video and audio playing end;
if the target video file does not exist, sending a playing service request to a cloud end;
and if the target video file exists, video playing is carried out based on the locally stored target video file.
Fig. 10 is a schematic structural diagram of an electronic device provided in the present invention, and as shown in fig. 10, the electronic device may include: a processor (processor)1010, a memory (memory)1020, a communication interface (communications interface)1030, and a communication bus 1040, wherein the processor 1010, the memory 1020, and the communication interface 1030 communicate with each other via the communication bus 1040. Processor 1010 may call logic instructions in memory 1020 to perform a video playback method, the method comprising: extracting an audio file from a video file to be uploaded; and respectively sending the audio file and the video file to a cloud end, so that the cloud end provides playing service for a video and audio playing end based on the received audio file in the transmission process of the video file.
And/or, the method comprises: receiving an audio file and a video file, wherein the audio file is extracted from the video file by a video and audio distribution terminal; and in the receiving process of the video file, providing playing service for the video and audio playing end based on the received audio file.
And/or, the method comprises: sending a playing service request to a cloud end to trigger the cloud end to determine a target video file corresponding to the playing service request, and providing playing service to a video playing end based on a received audio file in the process that the video publishing end transmits the target video file to the cloud end, wherein the audio file is extracted from the target video file by the video publishing end; and receiving the playing service provided by the cloud.
In addition, the logic instructions in the memory 1020 may be implemented in software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as a stand-alone product. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
In another aspect, the present invention further provides a computer program product, the computer program product including a computer program stored on a non-transitory computer-readable storage medium, the computer program including program instructions, when the program instructions are executed by a computer, the computer being capable of executing the video playback method provided by the above methods, the method including: extracting an audio file from a video file to be uploaded; and respectively sending the audio file and the video file to a cloud end, so that the cloud end provides playing service for a video and audio playing end based on the received audio file in the transmission process of the video file.
And/or, the method comprises: receiving an audio file and a video file, wherein the audio file is extracted from the video file by a video and audio distribution terminal; and in the receiving process of the video file, providing playing service for the video and audio playing end based on the received audio file.
And/or, the method comprises: sending a playing service request to a cloud end to trigger the cloud end to determine a target video file corresponding to the playing service request, and providing playing service to a video playing end based on a received audio file in the process that the video publishing end transmits the target video file to the cloud end, wherein the audio file is extracted from the target video file by the video publishing end; and receiving the playing service provided by the cloud.
In another aspect, the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, the computer program being implemented by a processor to perform the video playback method provided above, the method including:
extracting an audio file from a video file to be uploaded; and respectively sending the audio file and the video file to a cloud end, so that the cloud end provides playing service for a video and audio playing end based on the received audio file in the transmission process of the video file.
And/or, the method comprises: receiving an audio file and a video file, wherein the audio file is extracted from the video file by a video and audio distribution terminal; and in the receiving process of the video file, providing playing service for the video and audio playing end based on the received audio file.
And/or, the method comprises: sending a playing service request to a cloud end to trigger the cloud end to determine a target video file corresponding to the playing service request, and providing playing service to a video playing end based on a received audio file in the process that the video publishing end transmits the target video file to the cloud end, wherein the audio file is extracted from the target video file by the video publishing end; and receiving the playing service provided by the cloud.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention 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; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (12)
1. A video and audio playing method is applied to a video and audio distribution end and comprises the following steps:
extracting an audio file from a video file to be uploaded;
and respectively sending the audio file and the video file to a cloud end, so that the cloud end provides playing service for a video and audio playing end based on the received audio file in the transmission process of the video file.
2. The video playback method of claim 1, wherein the sending the audio file and the video file to a cloud respectively comprises:
determining a transmission mode of the audio file and the video file based on the current network quality and/or the size of the video file;
and respectively sending the audio file and the video file to a cloud terminal based on the transmission mode.
3. The video playback method of claim 2, wherein the transmission mode is to transmit the audio file first and then to transmit the video file;
based on the transmission mode, the audio file and the video file are respectively sent to a cloud, and the method comprises the following steps:
sending the audio file to the cloud;
and if a video transmission request sent by the cloud is received, sending the video file to the cloud, wherein the video transmission request is sent after the cloud receives a playing service request sent by the video and audio playing end.
4. A video and audio playing method is applied to a cloud end and comprises the following steps:
receiving an audio file and a video file, wherein the audio file is extracted from the video file by a video and audio distribution terminal;
and in the receiving process of the video file, providing playing service for the video and audio playing end based on the received audio file.
5. The video playback method of claim 4, wherein the receiving of the audio file and the video file further comprises:
generating a subtitle of the video file based on the received audio file;
and after the transmission of the video file is finished, providing playing service for the video and audio playing end based on the subtitle and the received video file.
6. A video and audio playing method is characterized in that the method is applied to a video and audio playing end and comprises the following steps:
sending a playing service request to a cloud end to trigger the cloud end to determine a target video file corresponding to the playing service request, and providing playing service to a video playing end based on a received audio file in the process that the video publishing end transmits the target video file to the cloud end, wherein the audio file is extracted from the target video file by the video publishing end;
and receiving the playing service provided by the cloud.
7. The video playback method of claim 6, wherein the sending the playback service request to the cloud comprises:
inquiring the target video file at the local position of the video and audio playing end;
if the target video file does not exist, sending a playing service request to a cloud end;
and if the target video file exists, video playing is carried out based on the locally stored target video file.
8. An audio-video playing device, which is installed at an audio-video distribution end, includes:
the device comprises an extraction unit, a storage unit and a processing unit, wherein the extraction unit is used for extracting an audio file from a video file to be uploaded;
the first sending unit is used for sending the audio file and the video file to a cloud end respectively so that the cloud end can provide playing service for a video and audio playing end based on the received audio file in the transmission process of the video file.
9. The utility model provides a video transmission device, its characterized in that installs in the high in the clouds, includes:
the receiving unit is used for receiving an audio file and a target video file, wherein the audio file is extracted from the target video file by a video and audio distribution terminal;
and the providing unit is used for providing playing service for the video and audio playing end based on the received audio file in the receiving process of the target video file.
10. An audio-video playing device, which is installed at an audio-video playing end, includes:
the second sending unit is used for sending a playing service request to a cloud end so as to trigger the cloud end to determine a target video file corresponding to the playing service request, and providing playing service to an audio and video playing end based on a received audio file in the process that the audio and video publishing end transmits the target video file to the cloud end, wherein the audio file is extracted from the target video file by the audio and video publishing end;
and the playing unit is used for receiving the playing service provided by the cloud.
11. An electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the video playback method according to any one of claims 1 to 3 when executing the program, and/or the processor implements the steps of the video playback method according to any one of claims 4 to 5 when executing the program, and/or the processor implements the steps of the video playback method according to any one of claims 6 to 7 when executing the program.
12. A non-transitory computer-readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the steps of the video playback method according to any one of claims 1 to 3, and/or wherein the computer program, when executed by a processor, implements the steps of the video playback method according to any one of claims 4 to 5, and/or wherein the computer program, when executed by a processor, implements the steps of the video playback method according to any one of claims 6 to 7.
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