CN108040282A - A kind of video broadcasting method and device - Google Patents
A kind of video broadcasting method and device Download PDFInfo
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- CN108040282A CN108040282A CN201711392818.2A CN201711392818A CN108040282A CN 108040282 A CN108040282 A CN 108040282A CN 201711392818 A CN201711392818 A CN 201711392818A CN 108040282 A CN108040282 A CN 108040282A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000006835 compression Effects 0.000 claims abstract description 18
- 238000007906 compression Methods 0.000 claims abstract description 18
- 230000001360 synchronised effect Effects 0.000 claims abstract description 9
- 230000009471 action Effects 0.000 claims description 17
- 238000004458 analytical method Methods 0.000 description 6
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- 239000003086 colorant Substances 0.000 description 3
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- 238000005538 encapsulation Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000012550 audit Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
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- 238000013135 deep learning Methods 0.000 description 1
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Classifications
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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
- H04N21/43—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
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4341—Demultiplexing of audio and video streams
-
- 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
- H04N21/43—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
- H04N21/4394—Processing of audio elementary streams involving operations for analysing the audio stream, e.g. detecting features or characteristics in audio streams
-
- 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
- H04N21/43—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
- H04N21/4398—Processing of audio elementary streams involving reformatting operations of audio signals
-
- 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
- H04N21/43—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
- H04N21/4402—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 involving reformatting operations of video signals for household redistribution, storage or real-time display
-
- 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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
The present invention provides a kind of video broadcasting method and device, including：Audio, video data is isolated from original stream media protocol data；Audio, video data will be isolated to be decapsulated, to obtain compressed audio coding data and video compression coding data therein；To compressed audio coding data and video compression coding data, to be reduced into uncompressed audio raw data and video original data；Audio content is identified to convert the audio into text；Each frame picture is analyzed to determine whether each frame is useful frame；The Voice ＆ Video data that synchronous decoding comes out are sent to system sound card and video card respectively and are played out.
Description
Technical field
The present invention relates to electronic technology field, and in particular to a kind of video broadcasting method and device.
Background technology
Video player is a kind of popular software, for playing various videos；Its operation principle be by video file according to
Its coded format decoded back is played out into image and audio files, and by computer or other equipment.Existing video
Player usually has the function of to open file, plays video, pause, F.F., rewind, slow play etc..Since video is incorporated in extensively
Various monitoring fields, therefore various videos are often played in the judicial adjudication, the institute of trial is participated in be presented to as evidence
There are personnel.Meanwhile also there is similar problem when evidence is collected in law enforcement and judicial organs in public security organ, procuratorate, law court.
Video player of the prior art is all to be played frame by frame sequentially in time；Existing video file is usual
Each second all includes 25 frame pictures, then the video of length will include 90000 two field pictures when one section 1 small.Since video is conduct
What evidence used, therefore do not allow to carry out any editor；Therefore when playing, it is necessary to played in order from the beginning to the end, to ensure not
Possible Key detail can be missed；Put soon even with believable mode at the same time, it is also desirable to be lot more time to finish watching
Video when one section 1 small.The video usually enrolled in night or secluded environment, typically by just someone walks for a long time
Cross, and other mosts of the time are the static background frames without any information.So resulting in many times is wasted in
Watch on unworthy background frame.
The content of the invention
For it is existing in the prior art video file include largely the paragraph without substantive content causes to expend a large amount of when
Between by manually watching video file the problem of, technical problems to be solved of the embodiment of the present invention be propose it is a kind of more
Rational video broadcasting method and device, at least part of solution problems of the prior art.
To solve the above-mentioned problems, the embodiment of the present invention proposes a kind of video broadcasting method, including：
Solve protocol steps：Audio, video data is isolated from original stream media protocol data；
Decapsulation step：Audio, video data will be isolated to be decapsulated, to obtain compressed audio coding data therein
With video compression coding data；
Decoding step：It is former to be reduced into uncompressed audio to compressed audio coding data and video compression coding data
Beginning data and video original data；
Audio/video processing step；For performing following operation：Audio content is identified written to convert the audio into
This；Each frame picture is analyzed to determine whether each frame is useful frame；
Audio-visual synchronization step：By the Voice ＆ Video data that synchronous decoding comes out send respectively to system sound card and video card into
Row plays.
Meanwhile the embodiment of the present invention also proposed a kind of video play device, including：
Solve protocol module：For isolating audio, video data from original stream media protocol data；
Decapsulation module：Decapsulated for audio, video data will to be isolated, to obtain compressed audio coding therein
Data and video compression coding data；
Decoder module：For to compressed audio coding data and video compression coding data, to be reduced into uncompressed sound
Frequency initial data and video original data；
Audio/video processing module；For performing following operation：Audio content is identified written to convert the audio into
This；Each frame picture is analyzed to determine whether each frame is useful frame；
Audio-visual synchronization module：Voice ＆ Video data for synchronous decoding to be come out are sent to system sound card and are shown respectively
Card plays out.
The above-mentioned technical proposal of the present invention has the beneficial effect that：Above-mentioned technical proposal proposes a kind of video broadcasting method
And device, video can be pre-processed to identify the useful frame in the corresponding word of audio and video, to reduce
The time wasted during video for void content is watched, improves work efficiency.
Brief description of the drawings
Fig. 1 is the flow diagram of the embodiment of the present invention.
Embodiment
To make the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
Existing video jukebox software performs following operation usually when playing video：
Solve protocol steps：Remove signaling data from original stream media protocol data and only retain audio, video data；Such as
The data transmitted using RTMP agreements, export the data of flv forms after solving agreement；
Decapsulation step：Separating audio compress coding data and video compression coding data, common encapsulation format mp4,
The effect of these forms of mkv, rmvb, ts, flv, avi is exactly to be stored in the video data of compressed encoding and voice data
Together；Such as the data of FLV forms export the audio code stream of the video code flow H.264 encoded and AAC codings after decapsulation；
Decoding step：By video, compressed audio coding data, are reduced into uncompressed video, audio raw data, audio
Compression and coding standard including AAC, MP3, AC-3 etc., video compression coding standard include H.264, MPEG2, VC-1 etc., pass through
Decoding obtains uncompressed vedio color data such as YUV420P, rgb format, and uncompressed voice data such as PCM format.
Audio-visual synchronization step：By the Voice ＆ Video data that synchronous decoding comes out send respectively to system sound card and video card into
Row plays.
And the embodiment of the present invention proposes a kind of brand-new video broadcasting method and device, it can be made more to be suitable for working as
Preceding juridical practice activity.Specifically, the video broadcasting method of the embodiment of the present invention and device are as shown in Figure 1, it is whole
Audio identification and video content analysis step are added in a flow；Wherein audio identification is in audio after audio decoder
Appearance is identified to convert the audio into text；Video content recognition then analyzes each frame picture is with definite each frame
No is useful frame, and is significantly represented on a progress bar when playing.
Specifically, the method for the embodiment of the present invention includes：
Solve protocol steps：Audio, video data is isolated from original stream media protocol data；
Decapsulation step：Audio, video data will be isolated to be decapsulated, to obtain compressed audio coding data therein
With video compression coding data；
Decoding step：It is former to be reduced into uncompressed audio to compressed audio coding data and video compression coding data
Beginning data and video original data；
Audio/video processing step；For performing following operation：Audio content is identified written to convert the audio into
This；Each frame picture is analyzed to determine whether each frame is useful frame；
Audio-visual synchronization step：By the Voice ＆ Video data that synchronous decoding comes out send respectively to system sound card and video card into
Row plays.
Wherein, the method further includes：The useful frame that will be determined in audio/video processing step, identifies in video playing
On progress bar.
Wherein, it is described each frame picture to be analyzed to determine whether each frame is useful frame, is specifically included：
Figure action needed for obtaining；
The background image of video is obtained, before background image is isolated to obtain each frame from the picture of each frame
Scape image；
By being learnt to foreground image to obtain the action model of personage in foreground image, according to the dynamic of the personage
The action of the personage in video is determined as model, the frame of required figure action will be met as useful frame.
Wherein, it is described each frame picture to be analyzed to determine whether each frame is useful frame, is specifically included：
The background image of video is obtained, before background image is isolated to obtain each frame from the picture of each frame
Scape image；
By foreground image is identified with determine in foreground image whether moving object or special exercise object.
When playing video, the context synchronization identified from audio is shown.
Meanwhile the embodiment of the present invention also proposed a kind of video play device, including：
Solve protocol module：For isolating audio, video data from original stream media protocol data；
Decapsulation module：Decapsulated for audio, video data will to be isolated, to obtain compressed audio coding therein
Data and video compression coding data；
Decoder module：For to compressed audio coding data and video compression coding data, to be reduced into uncompressed sound
Frequency initial data and video original data；
Audio/video processing module；For performing following operation：Audio content is identified written to convert the audio into
This；Each frame picture is analyzed to determine whether each frame is useful frame；
Audio-visual synchronization module：Voice ＆ Video data for synchronous decoding to be come out are sent to system sound card and are shown respectively
Card plays out.
In judicial industry, video player is also a very common instrument, and wherein procuratorate is carried out specific with it
The playback of video recording and check, to audit in judicial Interrogation Procedure with the presence or absence of the scene or situation for not conforming to rule.
However, current universal player is all used and is read out in chronological order, the pattern played out frame by frame, such as 1
A hour video, calculates according to 25 frame per second, then has 90000 two field pictures.Onlooker is when video is seen, in order not to miss possibility
Key detail, generally require to see a hour, even with necessary fast mode playback, it is also desirable to the time of dozens of minutes,
One section of video can just be finished watching.And in practice, often most of in video is invalid or static image, such as against a guest
The video of the monitoring in shop corridor, may only have tens people's walkings for one day, other mosts of the time are static without information content
Content, really it is valuable may only accumulative a few minutes or tens fragments in seconds, in judicial Interrogation Procedure
In, most of is also very usual dialogue, is produced without specific action.
Based on as above considering, a dedicated video playing mode and player of the embodiment of the present invention, it was being played
In Cheng Qian or playing process, a kind of contents recognizing technology based on deep learning can be used, video content is known in itself
Not, video-frequency band that is wherein static or being not concerned with the video paragraph of action and have specific action is dropped into row automatic distinguishing, with
Different colours are presented to onlooker on progress bar, allow onlooker to fast skip piece of video specific invalid or without concern information content
Section, then pay close attention to the video for the fragment for needing to pay close attention to.Meanwhile to the video segment that needs are paid close attention to, can be with the shape of snapshot
Formula is quickly presented to onlooker so that onlooker can quickly control the information content for needing to pay close attention in one section of video.In this way,
Improve efficiency of the onlooker during watching and auditing video content.
The technical background of the present invention mainly has coding and decoding video, and traditional video player groundwork is exactly to video text
Video and audio-frequency information in part are decoded, and are then played and are exported by audio-visual synchronization.Existing player is generally all abided by
Follow following methods, realize the broadcasting in proper order of video and voice data, at the same addition of some include beginnings, pause, F.F., slowly
Put, playlist, loop play, it is full frame amplification etc. button additional function：
Solve agreement：Remove signaling data from original stream media protocol data and only retain audio, video data, such as use
The data of RTMP agreements transmission, export the data of flv forms after solving agreement.
Decapsulation：Separating audio compress coding data and video compression coding data, common encapsulation format mp4, mkv,
The effect of these forms of rmvb, ts, flv, avi is exactly to put together the video data of compressed encoding and voice data,
Such as the data of FLV forms export the audio code stream of the video code flow H.264 encoded and AAC codings after decapsulation.
Decoding：By video, compressed audio coding data, are reduced into uncompressed video, audio raw data, the pressure of audio
Contracting coding standard includes AAC, MP3, AC-3 etc., and H.264 video compression coding standard includes, MPEG2, VC-1 etc., by decoding
Obtain uncompressed vedio color data such as YUV420P, RGB and uncompressed voice data such as PCM etc..
Audio-visual synchronization：The Voice ＆ Video data that synchronous decoding comes out are sent to system sound card and video card broadcasting respectively.
Existing player, and do not understand video and audio content in itself, they are the loyal reduction of data and present,
But regardless of content in itself, even there was only a piece of white screen in video, or without any substantive content, it still continues the intrinsic time
Order plays out.
The present invention proposes a kind of video player for being used for judicial hearing, it can be in the video and audio of hearing
Appearance is understood, while truthful data is reduced to onlooker, based on some specific intelligent algorithms, to video content sheet
Body is analyzed, and valuable information segment and unworthy information segment are prompted to onlooker in a different manner, is easy to
Onlooker is to the video of a rapid lapse of time, the access quickly browsed.
Video player can also be parsed and identified to the audio content in video in itself at the same time, by audio from turn
Change word into, now on a player, need not all be watched easy to onlooker, you can understand the sound in video file and dialogue
Content.
The broad flow diagram of player is as follows in the present invention：
In flow chart in the present invention, increase by two steps of speech recognition and video content analysis, its audio decoder it
Afterwards, audio content is identified, the speech recognition algorithm of current mainstream can be used, be converted into text；Video content recognition mould
Block, then analyze video content, the video content analysis algorithm selected in advance by onlooker, and it is " useful " frame to mark the frame
Still " useless " frame, is shown on player progress bar with different colours.
In the present invention, video player can quickly analyze video content before broadcasting, own to advance demand flag
Content.
In an example, after some file is selected, analysis button can be clicked on, its content is analyzed,
After analysis, player progress bar shows inactive portion with grey, and with the valuable information content of white displays, mouse moves upper progress
Bar can show the thumbnail of video content, and right side shows the content text of speech recognition conversion.
Speech recognition and video content analysis in the present invention, using based on current leading depth learning technology.Wherein
It is to nobody identification of someone that video content recognition, which can be preset, can also be defined as whetheing there is the identification specifically acted,
Such as hit the person, body contact etc..
The present invention proposes a kind of new judicial hearing video playing mode and player, can before being played or broadcast
During putting, video content is analyzed, the content of voice dialogue in video is identified by speech recognition, is automatically displayed in
On player interface, automatically identify a certain frame whether there is information to be paid close attention to by video content recognition, will need to be paid close attention to information and
Video frame without information to be paid close attention to is shown on a progress bar in different colors, and point to be paid close attention to quickly is jumped to for onlooker.
The present invention proposes a kind of video player for being used for judicial hearing, it can be in the video and audio of hearing
Appearance is understood, while truthful data is reduced to onlooker, based on some specific intelligent algorithms, to video content sheet
Body is analyzed, and valuable information segment and unworthy information segment are prompted to onlooker in a different manner, is easy to
Onlooker is to the video of a rapid lapse of time, the access quickly browsed.
It can use current front-runner's work intelligent algorithm, and the insignificant fragment of automatic identification, can save significantly on onlooker
Viewing time, improve and examine efficiency, greatly improve the work efficiency of judicial functionary.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
- A kind of 1. video broadcasting method, it is characterised in that including：Solve protocol steps：Audio, video data is isolated from original stream media protocol data；Decapsulation step：Audio, video data will be isolated to be decapsulated, to obtain compressed audio coding data therein and regard Frequency compress coding data；Decoding step：To compressed audio coding data and video compression coding data, to be reduced into uncompressed audio original number According to and video original data；Audio/video processing step；For performing following operation：Audio content is identified to convert the audio into text； Each frame picture is analyzed to determine whether each frame is useful frame；Audio-visual synchronization step：The Voice ＆ Video data that synchronous decoding comes out are sent to system sound card and video card respectively and are broadcast Put.
- 2. video broadcasting method according to claim 1, it is characterised in that the method further includes：At audio/video The useful frame determined in step is managed, is identified on video playing progress bar.
- 3. video broadcasting method according to claim 1 or 2, it is characterised in that described to analyze each frame picture To determine whether each frame is useful frame, is specifically included：Figure action needed for obtaining；The background image of video is obtained, background image is isolated to obtain the foreground picture of each frame from the picture of each frame Picture；By being learnt to foreground image to obtain the action model of personage in foreground image, according to the action mould of the personage Type determines the action of the personage in video, will meet the frame of required figure action as useful frame.
- 4. video broadcasting method according to claim 1 or 2, it is characterised in that described to analyze each frame picture To determine whether each frame is useful frame, is specifically included：The background image of video is obtained, background image is isolated to obtain the foreground picture of each frame from the picture of each frame Picture；By foreground image is identified with determine in foreground image whether moving object or special exercise object.
- 5. video broadcasting method according to claim 1 or 2, it is characterised in that the audio-visual synchronization step further includes： When playing video, the context synchronization identified from audio is shown.
- A kind of 6. video play device, it is characterised in that including：Solve protocol module：For isolating audio, video data from original stream media protocol data；Decapsulation module：Decapsulated for audio, video data will to be isolated, to obtain compressed audio coding data therein With video compression coding data；Decoder module：It is former to be reduced into uncompressed audio for compressed audio coding data and video compression coding data Beginning data and video original data；Audio/video processing module；For performing following operation：Audio content is identified to convert the audio into text； Each frame picture is analyzed to determine whether each frame is useful frame；Audio-visual synchronization module：Voice ＆ Video data for synchronous decoding to be come out send respectively to system sound card and video card into Row plays.
- 7. video play device according to claim 6, it is characterised in that the method further includes：At audio/video The useful frame determined in step is managed, is identified on video playing progress bar.
- 8. the video play device according to claim 6 or 7, it is characterised in that described to analyze each frame picture To determine whether each frame is useful frame, is specifically included：Figure action needed for obtaining；The background image of video is obtained, background image is isolated to obtain the foreground picture of each frame from the picture of each frame Picture；By being learnt to foreground image to obtain the action model of personage in foreground image, according to the action mould of the personage Type determines the action of the personage in video, will meet the frame of required figure action as useful frame.
- 9. the video play device according to claim 6 or 7, it is characterised in that described to analyze each frame picture To determine whether each frame is useful frame, is specifically included：The background image of video is obtained, background image is isolated to obtain the foreground picture of each frame from the picture of each frame Picture；By foreground image is identified with determine in foreground image whether moving object or special exercise object.
- 10. the video play device according to claim 6 or 7, it is characterised in that the audio-visual synchronization device is additionally operable to When playing video, the context synchronization identified from audio is shown.
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