CN105933282A - Video and audio code stream self-adapting method based on OTT business - Google Patents
Video and audio code stream self-adapting method based on OTT business Download PDFInfo
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- CN105933282A CN105933282A CN201610194326.1A CN201610194326A CN105933282A CN 105933282 A CN105933282 A CN 105933282A CN 201610194326 A CN201610194326 A CN 201610194326A CN 105933282 A CN105933282 A CN 105933282A
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
-
- 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
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
- H04N21/25866—Management of end-user data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
- H04N21/25866—Management of end-user data
- H04N21/25875—Management of end-user data involving end-user authentication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/26613—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing keys in general
Abstract
The invention provides a video and audio code stream self-adapting method based on OTT business, and the method comprises the steps: a server receives a request message sent by a client; the server searches resource requested by the client and performs coding and cutting into different bandwidths on the resource; the server receives the network bandwidth needed in real time by the client; data stream is distributed to the client according to the matched bandwidth through a web server; the client receives the data stream, data stream reconstitution, decoding and decryption are performed on the data stream, so that original video and audio stream is recovered; the beneficial effect of the invention comprises: (1) the HTTP code stream self-adapting technology is adopted to improve the business experience of OTT video for providing smooth play under a condition of network bandwidth fluctuation; (2) a resolution ratio matching strategy is realized for screens of various video terminals, especially in a wireless network environment, the cost of OTT video for network is reduced, the possibility of wireless network congestion is reduced, so that the service experience quality is improved.
Description
[technical field]
The present invention relates to a kind of internet video areas of information technology, particularly relate to a kind of based on OTT business regarding sound screen code stream
Adaptive method.
[background technology]
In recent years along with the widespread development of broadband network, home network accesses speed-raising, and intelligent terminal is popularized, including intelligence hands
Machine, various PAD screen, smart television set top box etc..User has begun to be not content with and pays from cable digital TV and IPTV etc.
TV service is watched video content.Major part netizen user has been accustomed to watching various videos, i.e. OTT Video service online
This mode, has been increasingly becoming a part for user's daily life.According to the Internet venture capital fund KPCB that the U.S. is maximum
Adding up, the TV programme of current youngster (after 80,90,00) 34% are watched online by the Internet, traditional broadcast electricity
Depending on being faced with unprecedented impact.
Along with domestic OTT video traffic userbase quickly increases, content operational for OTT and business experience
Require more and more higher.Investigation display, play smooth, can quickly find that required content, time spot are short, definition is high is
Affect the key factor of Consumer's Experience.OTT Video service has only to connect broadband network, it is possible to customizes and watches from interconnection
The content of net video content provider.The shortcoming of OTT Video service is it cannot be guaranteed that the Quality of experience of video content, easily causes
Problem in terms of following two: (1) does not has user video Quality of experience to ensure QOE.In the case of network bandwidth moment deteriorates,
Owing to the bandwidth requirement after video compress is more than network speed, it is impossible to meeting the requirement of normal play video, client arises that figure
As Caton phenomenon.It is exactly additionally that video content causes image-mosaics phenomenon due to Network Packet Loss.(2) OTT video excessively disappears
Consumption wireless network resource, causes network congestion.According to investigations, the internet video flow of about 75% is the most all to account for wherein 5% chain
Take over high-resolution video and image file causes, and the client of about 95% connects the 20%-of a consumption network total bandwidth
40%.Relatively show the size of video screen, while OTT provides video, often to intelligent terminal's resolution such as mobile phone too high in
Hold, cause the waste of wireless bandwidth resource therefrom.The smart mobile phone screen such as giving terminal screen 5 inches provides high-quality to regard
Frequently, 480P resolution video is sufficient to, if providing the video of 1080P resolution will take the most unnecessary network bandwidth
Resource, and the video definition of user's subjectivity is not significantly increased, this is the most uneconomic, in some instances it may even be possible to be caused by a small amount of
The burst request of high-bandwidth user, occurs that the situation of larger area radio jamming network occurs, causes the business body of other user
Test operating lag.
[summary of the invention]
The object of the invention is in order to solve to ensure QOE currently without user video Quality of experience, in the feelings of network bandwidth moment deterioration
Under condition, owing to the bandwidth requirement after video compress is more than network speed, it is impossible to meeting the requirement of normal play video, client will go out
Existing image Caton phenomenon, is exactly additionally that video content causes the deficiency of image-mosaics phenomenon to provide one due to Network Packet Loss
Plant based on OTT business regarding the sound adaptive method of screen code stream.
The present invention is achieved through the following technical solutions: a kind of based on OTT business adaptive regarding sound screen code stream
Method, comprises the steps:
(1) service end is initiated solicited message by client；
(2), receive the solicited message of client in service end after, find requested resource and then this resource is compiled
Code, during coding, same resource is arranged different coding bandwidth, be set to 125K, 250K, 600K, 1200K, 2500K,
The video file of the same content of 8000K, service end unit carries out the coding of video and audio source file, the section of stream file and section
The storage of file, cataloged procedure is the program source of video/audio signal (can be live or non-live) to be encoded, and is packaged into
The program stream of MPEG-2 TS, then cuts into slices continuous print MPEG2 stream, then this series video fragment is preserved,
The most a series of ts ending file format, if only audio file and do not include video, then can be a series of MPEG
The AAC of audio file, usually band ADTS head or mp3 file；
(3) after having encoded cutting into slices resource, slicing processes typically requires and reads TS encapsulation literary composition with software from local network
Part, and by file section for a series of, the media file of less equal length, many ASCII stream file ASCIIs are when section, and encoder is often
It not the file of 1 fixed-bandwidth of section, but the file of the compression of multiple bandwidth of cutting into slices, can be by various bandwidth compression literary composition
Part, each file can be 10 seconds with fixed length；Index file is to produce an index file in section, often with slice tool simultaneously
Completing a file section and will update an index file, this index file comprises a series of media file relevant information,
Including metadata metadata, meanwhile, the process cut into slices is carried out at file, it is also possible to by Slice Software, file is added
Close, generate relevant key file；
(4) method that service end through-rate controls obtains the bandwidth value that the network bandwidth and client are immediately required, then enters
Scanning frequency rate adjusts, and furnishing matches with the network bandwidth and client；
(5) enter Dispatching Unit, by a WEB server or WEB caching system, HTTP is established the link with client, and
Coupling is better than the information that client is relevant, then distributes media file and the index file of bandwidth corresponding with client；For WEB
The configuration of server, is generically configured to the M3U8 file for mime type and ts file, wherein life span ttl value according to
M3U8 file needs the time of WEB CACH services cache to be configured, to reach to need WEB CACH services cache to reach
Design requirement, these files it is frequently necessary to cover frequently, and up-to-date content is then downloaded by up-to-date request.
(6) client receives service end and carries the data stream come, and by index sequential file, flows to the data received
Row is recombinated, deciphers, is decoded, and reverts to complete video-voice frequency flow, plays back in the client；
Further, in described step (2), the coding of video and audio file, is encoded into the literary composition of different bandwidth by same segment file
Part.
Further, the file stream after all codings is cut into slices by described step (3), be sliced into the literary composition of 10s mono-section
Part.
Further, the method that in described step (4), service end through-rate controls obtains the net that client is immediately required
Network bandwidth.
Further, described step (5) use web server to match with client and the network bandwidth by configuring
Information, then distributes data stream to client.
Client is by from the file stream received, obtaining the file stream index that the section of service end unit generates, then exist
Distinguish different video-voice frequency flows under URL, when downloading enough data files, carry out regarding sound screen by the sequential file of index file
The restructuring of stream, revert to can play regarding sound screen file, play in the client, for encryption regarding sound screen stream file, client
Hold by obtaining decruption key word, certification or offer authentication interface on-demand deciphering media file, in this process, client
Index file once runs into the labelling of #EXT-X-ENDLIST, this process will be stopped, if the most not running into #EXT-
The labelling of X-ENDLIST, then index file can be then a part for lasting broadcast singal, and client can periodically download new edition
This index file, then client finds media file and decruption key word in the index file updated, and by these URL
It is added in queue.
The beneficial effects of the present invention is:
(1) by the code stream adaptive technique of HTTP, improving OTT video provides smooth broadcasting in the case of the network bandwidth fluctuates
Business experience；
(2) screen to various video terminals realizes resolution match strategy, especially under wireless network environment, reduces OTT and regards
Frequency, to network overhead, reduces the possibility of Wireless network congestion, thus improves business experience quality.
[accompanying drawing explanation]
Fig. 1 be the present invention based on OTT business code flow self adaptive flow figure；
Fig. 2 be the present invention based on OTT service adaptation bit stream control framework figure；
Fig. 3 be the present invention based on OTT service adaptation bit stream structure chart；
[detailed description of the invention]
Below in conjunction with the accompanying drawings and the present invention is described further by detailed description of the invention:
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of based on OTT business regarding the sound adaptive method of screen code stream, comprise the steps:
(1) service end is initiated solicited message by client；
(2), receive the solicited message of client in service end after, find requested resource and then this resource is compiled
Code, during coding, same resource is arranged different coding bandwidth, be set to 125K, 250K, 600K, 1200K, 2500K,
The video file of the same content of 8000K, service end unit carries out the coding of video and audio source file, the section of stream file and section
The storage of file, cataloged procedure is the program source of video/audio signal (can be live or non-live) to be encoded, and is packaged into
The program stream of MPEG-2 TS, then cuts into slices continuous print MPEG2 stream, then this series video fragment is preserved,
The most a series of ts ending file format, if only audio file and do not include video, then can be a series of MPEG
The AAC of audio file, usually band ADTS head or mp3 file；
(3) after having encoded cutting into slices resource, slicing processes typically requires and reads TS encapsulation literary composition with software from local network
Part, and by file section for a series of, the media file of less equal length, many ASCII stream file ASCIIs are when section, and encoder is often
It not the file of 1 fixed-bandwidth of section, but the file of the compression of multiple bandwidth of cutting into slices, can be by various bandwidth compression literary composition
Part, each file can be 10 seconds with fixed length；Index file is to produce an index file in section, often with slice tool simultaneously
Completing a file section and will update an index file, this index file comprises a series of media file relevant information,
Including metadata metadata, meanwhile, the process cut into slices is carried out at file, it is also possible to by Slice Software, file is added
Close, generate relevant key file；
(4) method that service end through-rate controls obtains the bandwidth value that the network bandwidth and client are immediately required, then enters
Scanning frequency rate adjusts, and furnishing matches with the network bandwidth and client；
(5) enter Dispatching Unit, by a WEB server or WEB caching system, HTTP is established the link with client, and
Coupling is better than the information that client is relevant, then distributes media file and the index file of bandwidth corresponding with client；For WEB
The configuration of server, is generically configured to the M3U8 file for mime type and ts file, wherein life span ttl value according to
M3U8 file needs the time of WEB CACH services cache to be configured, to reach to need WEB CACH services cache to reach
Design requirement, these files it is frequently necessary to cover frequently, and up-to-date content is then downloaded by up-to-date request.
(6) client receives service end and carries the data stream come, and by index sequential file, flows to the data received
Row is recombinated, deciphers, is decoded, and reverts to complete video-voice frequency flow, plays back in the client；
Preferably, in described step (2), the coding of video and audio file, is encoded into the file of different bandwidth by same segment file.
Preferably, the file stream after all codings is cut into slices by described step (3), be sliced into the file of 10s mono-section.
Preferably, the method that in described step (4), service end through-rate controls obtains the network that client is immediately required
Bandwidth.
Preferably, described step (5) use web server by configuring the letter matched with client and the network bandwidth
Breath, then distributes data stream to client.
Client is by from the file stream received, obtaining the file stream index that the section of service end unit generates, then exist
Distinguish different video-voice frequency flows under URL, when downloading enough data files, carry out regarding sound screen by the sequential file of index file
The restructuring of stream, revert to can play regarding sound screen file, play in the client, for encryption regarding sound screen stream file, client
Hold by obtaining decruption key word, certification or offer authentication interface on-demand deciphering media file, in this process, client
Index file once runs into the labelling of #EXT-X-ENDLIST, this process will be stopped, if the most not running into #EXT-
The labelling of X-ENDLIST, then index file can be then a part for lasting broadcast singal, and client can periodically download new edition
This index file, then client finds media file and decruption key word in the index file updated, and by these URL
It is added in queue.
The announcement of book and teaching according to the above description, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula carries out suitable change and amendment.Therefore, the invention is not limited in detailed description of the invention disclosed and described above, to this
Some modifications and changes of invention should also be as falling in the scope of the claims of the present invention.Although additionally, this specification
In employ some specific terms, but these terms are merely for convenience of description, and the present invention does not constitute any restriction.
Claims (5)
1. one kind based on OTT business regarding the sound adaptive method of screen code stream, it is characterised in that: comprise the steps:
(1) service end is initiated solicited message by client；
(2), receive the solicited message of client in service end after, find requested resource and then this resource is compiled
Code, during coding, same resource is arranged different coding bandwidth, be set to 125K, 250K, 600K, 1200K, 2500K,
The video file of the same content of 8000K；
(3) after having encoded cutting into slices resource, slicing processes typically requires and reads TS encapsulation literary composition with software from local network
Part, and by file section for a series of, the media file of less equal length, many ASCII stream file ASCIIs are when section, and encoder is often
It not the file of 1 fixed-bandwidth of section, but the file of the compression of multiple bandwidth of cutting into slices, can be by various bandwidth compression literary composition
Part, each file can be 10 seconds with fixed length；
(4) method that service end through-rate controls obtains the bandwidth value that the network bandwidth and client are immediately required, then enters
Scanning frequency rate adjusts, and furnishing matches with the network bandwidth and client；
(5) enter Dispatching Unit, by a WEB server or WEB caching system, HTTP is established the link with client, and
Coupling is better than the information that client is relevant, then distributes media file and the index file of bandwidth corresponding with client.
(6) client receives service end and carries the data stream come, and by index sequential file, the data stream received carries out weight
Group, decipher, decode, revert to complete video-voice frequency flow, play back in the client.
2. according to based on OTT business regarding the sound adaptive method of screen code stream described in claims 1, it is characterised in that: described
In step (2), the coding of video and audio file, is encoded into the file of different bandwidth by same segment file.
3. according to based on OTT business regarding the sound adaptive method of screen code stream described in claims 1, it is characterised in that: described
File stream after all codings is cut into slices by step (3), is sliced into the file of 10s mono-section.
4. according to based on OTT business regarding the sound adaptive method of screen code stream described in claims 1, it is characterised in that: described
The method that in step (4), service end through-rate controls obtains the network bandwidth that client is immediately required.
5. according to based on OTT business regarding the sound adaptive method of screen code stream described in claims 1, it is characterised in that: described
Step (5) uses web server by configuring the information matched with client and the network bandwidth, then distribute to client
Data stream.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610194326.1A CN105933282A (en) | 2016-03-30 | 2016-03-30 | Video and audio code stream self-adapting method based on OTT business |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610194326.1A CN105933282A (en) | 2016-03-30 | 2016-03-30 | Video and audio code stream self-adapting method based on OTT business |
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| CN105933282A true CN105933282A (en) | 2016-09-07 |
Family
ID=56840142
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| CN201610194326.1A Pending CN105933282A (en) | 2016-03-30 | 2016-03-30 | Video and audio code stream self-adapting method based on OTT business |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107958036A (en) * | 2017-11-20 | 2018-04-24 | 广州小鹏汽车科技有限公司 | A kind of music playback method, system and device in caching |
| CN110312148A (en) * | 2019-07-15 | 2019-10-08 | 贵阳动视云科技有限公司 | A kind of adaptive method of transmitting video data, device and medium |
| CN110996129A (en) * | 2019-12-20 | 2020-04-10 | 杭州当虹科技股份有限公司 | Method for supporting MPEG-DASH output slice number continuity |
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Application publication date: 20160907 |