CN103957469B - Based on the Internet video-on-demand method and system for turning encapsulation in real time - Google Patents
Based on the Internet video-on-demand method and system for turning encapsulation in real time Download PDFInfo
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Abstract
The invention provides a kind of based on the Internet video-on-demand method and system that turn encapsulation in real time, methods described has including step：Selected source format files in stream media is preserved to a kind of files in stream media of code check；When receiving user's order request, user's order request corresponding the source format files in stream media and object format are analyzed；The source format files in stream media is decapsulated, corresponding source format audio/video flow is extracted；The source format audio/video flow is packaged into by object format files in stream media according to the object format；The object format files in stream media is distributed to playback terminal.Whereby, the present invention turns encapsulation technology by real-time video, only preserves a kind of selected source format files in stream media to a kind of files in stream media of code check within the storage system, can greatly reduce storage overhead；And the present invention is not required to streaming media files and is decoded and re-encoded, and encapsulation format need to only be done and once changed, and will not bring playout-delay.
Description
Technical field
The present invention relates in internet video program request and digital media technology, more particularly to it is a kind of based on turning encapsulation in real time
Internet video-on-demand method and system.
Background technology
Present digital media content is in DTV, and the field such as Web TV and mobile TV has been obtained for widely should
With.But there are many standards on transmission technology.In recent years, because only needing to use common HTTP
(HyperText Transport Protocol, the Internet transport protocol) server, the Streaming Media based on http protocol
Program request technology has obtained great development.It is broadly divided into two major classes, and one is HTTP progressive downloads, and another is HTTP adaptive
Stream media technology.And HTTP adaptive stream medias technology can preferably adapt to play network, band because it supports multi code Rate of Chinese character switching
Carry out more preferable Consumer's Experience and be used widely.
Current HTTP adaptive stream medias agreement mainly has the HLS of apple, and (HTTP live Streaming, hypertext is straight
Broadcast stream), the MSS (Microsoft Smooth Streaming) of Microsoft, ADOBE HDS (HTTP Dynamic
Streaming) and later MPEG DASH (Dynamic Adaptive Streaming over HTTP), and wherein
With being most widely used for HLS.Today constantly merged in network and terminal, it is desirable to which video format and host-host protocol are with applying ring
Border difference and use various criterion requirement become more and more urgent.User wishes to access and watch video whenever and wherever possible, because
This requires that video format and host-host protocol are freely changed in heterogeneous network.Present common practice is that video is encoded into different codes
Rate, the file of different encapsulation format is preserved in the server, when user asks, directly obtains plane from HTTP server
File.If supporting different agreements or different forms, the multiple copies of same code check file need to be just preserved.This way
Although effectively, bringing great storage overhead.From the point of view of the development trend of internet video form intercommunication, exploitation is a kind of high
Effect in real time turns encapsulation technology and is extremely necessary have wide practical use to adapt to different application environments.
In summary, prior art there will naturally be inconvenience and defect in actual use, and it is therefore necessary to improved.
The content of the invention
For above-mentioned defect, it is an object of the invention to provide a kind of based on the internet video program request for turning encapsulation in real time
Method and system, it only preserves a kind of selected source format Streaming Media text to a kind of files in stream media of code check within the storage system
Part, can greatly reduce storage overhead；And the present invention is not required to streaming media files and is decoded and re-encoded, and only need to be to encapsulation
Form, which is done, once to be changed, and will not bring playout-delay.
To achieve these goals, the present invention provides a kind of based on the Internet video-on-demand method for turning encapsulation in real time, bag
Include：
Storing step, selected source format files in stream media is preserved to a kind of files in stream media of code check；
Receiving step is asked, when receiving user's order request, user's order request is analyzed corresponding described
Source format files in stream media and object format；
Decapsulation step, is decapsulated to the source format files in stream media, extracts corresponding source format audio/video flow；
Turn encapsulation step, the source format audio/video flow is packaged into by object format Streaming Media text according to the object format
Part；
Issuing steps, playback terminal is distributed to by the object format files in stream media.
According to Internet video-on-demand method of the present invention, the source format files in stream media is MP4 formatted files
And/or MPEG2-TS formatted files.
According to Internet video-on-demand method of the present invention, the decapsulation step further comprises：
The source format files in stream media is analyzed, corresponding source format audio/video flow and its media letter is extracted
Breath, the media information includes media file coding information, time started or sequence number, selection time and/or video frame size；
The encapsulation step that turns further comprises：
According to the object format and the media information, the source format audio/video flow is packaged into the object format
Files in stream media.
According to Internet video-on-demand method of the present invention, also include after the decapsulation step：
Judgment step, it is to obtain the object format files in stream media or playlist to judge user's order request
File, if obtain the object format files in stream media then perform it is described turn encapsulation step, otherwise perform following playlists
Generation step；
Playlist generation step, according to the corresponding playlist text of the media information and pre-defined rule generation
Part；
The issuing steps include：
The play list file is distributed to playback terminal.
According to Internet video-on-demand method of the present invention, the issuing steps further comprise：
The object format files in stream media or the play list file are subjected to http response encapsulation, and are distributed to
The playback terminal.
Internet video-on-demand method according to claim 1, it is characterised in that it is described turn after encapsulation step and
Also include before the issuing steps：
Encrypting step, the object format files in stream media is encrypted；
The issuing steps further comprise：
The object format files in stream media after encryption is distributed to playback terminal.
According to Internet video-on-demand method of the present invention, the Internet video-on-demand method is supported to be based on HTTP
The adaptive stream media of agreement is played or progressive download video playback.
According to Internet video-on-demand method of the present invention, the source format files in stream media is stored in content distribution
In the Edge Server or video server of network.
According to Internet video-on-demand method of the present invention, the Internet video-on-demand method is applied to turn in real time
Package server, for there is a first content distribution network of caching system, the package server that turns in real time is deployed in described the
One content distributing network rear end；
The request receiving step further comprises：
When receiving user's order request, if the first edge server of the first content distribution network is not deposited
In the corresponding source format files in stream media of user's order request, then the first edge server by Hui Yuan from institute
State and turn the package server acquisition source format files in stream media in real time and be buffered in the caching system, then perform the solution
Encapsulation step；If it is corresponding to there is user's order request in the first edge server of the first content distribution network
The source format files in stream media, then directly perform the decapsulation step.
According to Internet video-on-demand method of the present invention, the Internet video-on-demand method is applied to turn in real time
Package server, for the second content distributing network without caching system, the package server that turns in real time is deployed in described the
On the second edge server of two content distributing networks；
The request receiving step further comprises：
When receiving user's order request, the second edge server inquires about institute in book server storage system
The corresponding source format files in stream media of user's order request is stated, and performs the decapsulation step.
The present invention also provides a kind of based on the internet Internet video-on-demand system for turning encapsulation in real time, includes：
Memory module, selected source format files in stream media is preserved for the files in stream media to a kind of code check；
Request receiving module, for when receiving user's order request, analyzing user's order request corresponding
The source format files in stream media and object format；
Decapsulation module, for being decapsulated to the source format files in stream media, extracts corresponding source format sound and regards
Frequency flows；
Turn package module, for the source format audio/video flow to be packaged into object format stream matchmaker according to the object format
Body file；
Release module, for the object format files in stream media to be distributed into playback terminal.
Internet Internet video-on-demand system according to one's duty, the source format files in stream media is MP4 forms
File and/or MPEG2-TS formatted files.
Internet Internet video-on-demand system according to one's duty, the decapsulation module is used for the source format
Files in stream media is analyzed, and extracts corresponding the source format audio/video flow and its media information, and the media information includes
Media file coding information, time started or sequence number, selection time and/or video frame size；
The package module that turns is used for according to the object format and the media information, by the source format audio/video flow
It is packaged into the object format files in stream media.
Internet Internet video-on-demand system according to one's duty, in addition to：
Judge module, for judging that user's order request is to obtain the object format files in stream media or broadcasting
Listing file, then transfers to the package module that turns to perform, otherwise transfers to following if obtaining the object format files in stream media
Playlist generation module is performed；
Playlist generation module, for generating the corresponding playlist according to the media information and pre-defined rule
File；
The release module, for the play list file to be distributed into playback terminal.
Internet Internet video-on-demand system according to one's duty, the release module is used for the object format
Files in stream media or the play list file carry out http response encapsulation, and are distributed to the playback terminal.
Internet Internet video-on-demand system according to one's duty, in addition to：
Encrypting module, for the object format files in stream media for turning package module output to be encrypted；
The release module is used to the object format files in stream media after encryption being distributed to playback terminal.
Internet Internet video-on-demand system according to one's duty, the internet Internet video-on-demand system branch
The adaptive stream media based on http protocol is held to play or progressive download video playback.
Internet Internet video-on-demand system according to one's duty, the source format files in stream media is stored in content
In the Edge Server or video server of distribution network.
Internet Internet video-on-demand system according to one's duty, the internet Internet video-on-demand system should
It is described to turn package server portion in real time for there is the first content distribution network of caching system for turning package server in real time
Administration is in the first content distribution network rear end；
The request receiving module is used for when receiving user's order request, if the first content distribution network
First edge server the corresponding source format files in stream media of user's order request, then first side is not present
Edge server is obtained the source format files in stream media and is buffered in described slow by Hui Yuan from the package server that turns in real time
In deposit system, then the decapsulation module is transferred to perform；If the first edge server of the first content distribution network
There is the corresponding source format files in stream media of user's order request, then directly transfer to the decapsulation module to perform.
Internet Internet video-on-demand system according to one's duty, the internet Internet video-on-demand system should
It is described to turn package server portion in real time for the second content distributing network without caching system for turning package server in real time
Administration is on the second edge server of second content distributing network；
The request receiving module is used for when receiving user's order request, and the second edge server is at this
Server storage system inquires about the corresponding source format files in stream media of user's order request, and transfers to the decapsulation
Module is performed.
The present invention only preserves a kind of selected source format Streaming Media to a kind of files in stream media of code check within the storage system
File, when receiving user's order request, analyzes the corresponding source format files in stream media of user's order request and object format,
Source format audio/video flow is dressed up into the progress deblocking of source format files in stream media, then the circulation of source format audio frequency and video is distributed into target lattice
User is distributed to after formula files in stream media.Whereby, the present invention turns encapsulation technology by real-time video, within the storage system to one kind
The files in stream media of code check only preserves a kind of selected source format files in stream media, can greatly reduce storage overhead；And with reality
When transcoding technology unlike, the present invention is not required to streaming media files and is decoded and re-encoded, and only encapsulation format need to be done
Once change, the amount of calculation with respect to transcoding is many less, will not bring playout-delay.The present invention simultaneously support using http protocol as
The progressive download video playback and adaptive stream media on basis are played.
Brief description of the drawings
Fig. 1 is structural representation of the present invention based on the Internet video-on-demand system for turning encapsulation in real time；
Fig. 2 is the structural representation that the present invention is preferably based on the Internet video-on-demand system for turning encapsulation in real time；
Fig. 3 is that Internet video-on-demand system of the present invention is applied in the configuration diagram for having caching CDN system；
Fig. 4 is that Internet video-on-demand system of the present invention is applied in the configuration diagram without caching CDN system；
Fig. 5 is flow chart of the present invention based on the Internet video-on-demand method for turning encapsulation in real time；
Fig. 6 is the flow chart that the present invention is preferably based on the Internet video-on-demand method for turning encapsulation in real time.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Fig. 1 is structural representation of the present invention based on the Internet video-on-demand system for turning encapsulation in real time, the internet
Video on-demand system 100 is supported based on HTTP (HyperText Transfer Protocol, Hypertext Transport Protocol) agreement
Adaptive stream media is played or progressive download video playback.The Internet video-on-demand system 100 includes storage mould
Block 10, request receiving module 20, decapsulation module 30, turn package module 40 and release module 50, wherein：
Memory module 10, selected source format files in stream media is preserved for the files in stream media to a kind of code check.It is preferred that
, the source format files in stream media is MP4 (MPEG-4Part14) formatted files and/or MPEG2 (Moving
Pictures Experts Group2, dynamic image expert group 2)-TS (Timestamp, timestamp) formatted file.Preferably
It is that source format files in stream media is stored in CDN (Content Delivery Network, content distributing network) edge service
In device or video server.
Request receiving module 20, for when receiving user's order request, analyzing the corresponding source of user's order request
Format stream media file and object format.
Decapsulation module 30, for being decapsulated to source format files in stream media, extracts corresponding source format audio frequency and video
Stream.Preferably, decapsulation module 30 is used to analyze source format files in stream media, extracts corresponding source format audio frequency and video
Stream and its media information, the media information include media file coding information, time started or sequence number, selection time and/or
Video frame size etc..
Turn package module 40, for source format audio/video flow to be packaged into object format Streaming Media text according to object format
Part.Preferably, turning package module 40 is used for according to object format and media information, and source format audio/video flow is packaged into target
Format stream media file.Difference is had according to selected streaming media playing agreement difference, then packaged media file format.For example, apple
Fruit HLS uses MPEG2TS file formats, and Microsoft MSS and ADOBE HAD uses MP4 file formats.
Release module 50, the playback terminal for object format files in stream media to be distributed to user, the playback terminal
Can be mobile phone, television set, tablet personal computer etc..Preferably, release module 50 be used for object format files in stream media or
Play list file carries out http response encapsulation, and is distributed to playback terminal.
The emphasis of the present invention is only to preserve a media file copy on a storage device, and can provide a variety of Streaming Medias
The support that agreement is played, and can effectively reduce netcast delay.The present invention's turns packing service in real time, works in HTTP clothes
It is engaged in inside device.The present invention can effectively reduce system storage consumption, and can support simultaneously under gradual based on http protocol
Carry video playback and adaptive stream media is played.The present invention proposes that one kind turns encapsulation technology in real time, within the storage system to one kind
The files in stream media of code check only preserves a kind of selected source format, reaches the purpose for saving storage, by turning encapsulation in real time, supports
HTTP adaptive stream medias agreement is played.This method is different from real-time transcoding, is not required to streaming media files and is decoded and compiled again
Code, need to only do to encapsulation format and once change, many less with respect to transcoding amount of calculation, will not bring playout-delay.
Fig. 2 is the structural representation that the present invention is preferably based on the Internet video-on-demand system for turning encapsulation in real time, described mutual
Networked video VOD system 100 supports the adaptive stream media based on http protocol to play or progressive download video playback.
The Internet video-on-demand system 100 includes memory module 10, request receiving module 20, decapsulation module 30, turn encapsulation
Module 40, release module 50, judge module 60 and playlist generation module 70, wherein：
Memory module 10, selected source format files in stream media is preserved for the files in stream media to a kind of code check.It is preferred that
, the source format files in stream media is MP4 formatted files and/or MPEG2-TS formatted files.It is preferred that source format stream
Media file is stored in CDN Edge Server or video server.
The selected source format file preserved on selection video server or CDN Edge Server, it is desirable to including：1st, it is real
When calculate simple；2nd, the metadata comprising stream description；3rd, common format, have correlation is created in statistical tool.Three more than
It is individual to require, there are following two common formats may be selected, MP4 file formats and MPEG2-TS file formats.Both file formats
It is each advantageous, played for progressive download, support that the terminal of MP4 file formats is more, and also the former is for the branch of multi code Rate of Chinese character
Hold relatively more preferably, and MPET2-TS file formats can preferably preserve user metadata, to being cut into slices by TS based on HLS protocol
For, calculate in real time simpler.
Request receiving module 20, for when receiving user's order request, analyzing the corresponding source of user's order request
Format stream media file and object format.
Decapsulation module 30, for being decapsulated to source format files in stream media, extracts corresponding source format audio frequency and video
Stream.Preferably, decapsulation module 30 is used to analyze source format files in stream media, extracts corresponding source format audio frequency and video
Stream and its media information, media information include media file coding information, time started or sequence number, selection time and/or video
Frame sign etc..
Judge module 60, for judging that user's order request is to obtain object format files in stream media or playlist text
Part, then transfers to turn package module 40 to perform, otherwise transfers to following playlists to generate if obtaining object format files in stream media
Module 70 is performed.
Playlist generation module 70, for generating corresponding play list file according to media information and pre-defined rule.
Different according to selected streaming media playing agreement, playlist content is different.Apple HLS uses M3U8, Microsoft MSS and
ADOBE HAD use manifest files.In order to improve playing efficiency, network delay is reduced, simultaneously because play list file
Very little, can typically be previously generated.Due to the multi code Rate of Chinese character adaptive characteristic of the adaptive class stream media protocols of HTTP, stream description information one
As generated by program publisher, streaming media server will not be produced, and only provide broadcasting for contents list information, i.e. certain code check
Emplace list file.
Turn package module 40, for source format audio/video flow to be packaged into object format Streaming Media text according to object format
Part.Preferably, turning package module 40 is used for according to object format and media information, and source format audio/video flow is packaged into target
Format stream media file.
Release module 50, for object format files in stream media and/or play list file to be distributed into playback terminal.It is excellent
Choosing, release module 50 is used to object format files in stream media or play list file carrying out http response encapsulation, and
It is distributed to the playback terminal of user.
It is preferred that the Internet video-on-demand system still alternatively includes encrypting module 80, the encryption mould
Block 80 is used to the object format files in stream media for turning package module output is encrypted, and realizes DRM (Digital Right
Management, digital copyright management).
The release module 50 is used to the object format files in stream media after encryption being distributed to playback terminal.
Fig. 3 is that Internet video-on-demand system of the present invention is applied in the configuration diagram for having caching CDN system.Internet is regarded
Frequency broadcast system 100 is applied to turn package server in real time, for there is the first CDN of caching system, turns package server in real time
It is deployed in the first CDN rear ends.The request receiving module 20 of Internet video-on-demand system 100 please for that ought receive user's program request
When asking, if the corresponding source format files in stream media of user's order request or broadcasting is not present in the first CDN first edge server
Listing file, then first edge server source format files in stream media or broadcasting are obtained from turning package server in real time by Hui Yuan
Listing file is simultaneously buffered in caching system, then transfers to decapsulation module 30 to perform.If the first CDN first edge server is deposited
In the corresponding source format files in stream media of user's order request, then decapsulation module 30 is directly transferred to perform.
Fig. 4 is that Internet video-on-demand system of the present invention is applied in the configuration diagram without caching CDN system.Internet is regarded
Frequency broadcast system 100 is applied to turn package server in real time, for the 2nd CDN without caching system, turns package server in real time
On the second edge server for being deployed in the 2nd CDN.The request receiving module 20 of Internet video-on-demand system 100, which is used to work as, to be connect
When receiving user's order request, second edge server is in the corresponding source lattice of book server storage system inquiry user's order request
Formula files in stream media, and transfer to decapsulation module 30 to perform.For example, when user initiates order request, Edge Server is in this clothes
MP4 files are found in device storage system of being engaged in, and turn to be packaged into MPEG-TS section offer services.
The advantage of the invention for turning the video file that existing pre-generatmg multiple format is compared in encapsulation in real time is as follows：
1st, storage is saved：When a variety of HTTP stream media formats are supported, each stream media format must be in storage system
Independent copy is preserved in system, great storage overhead is accordingly brought.And using encapsulation technology is turned in real time, only need to be in storage system
In a kind of selected source format file is preserved to the file of each code check., only need to be particularly in the CDN system without caching
Piece of content copy is preserved in Edge Server, storage overhead will be significantly reduced.
2nd, more preferable protocol extension：When new HTTP stream media protocols need to be supported, it is not required to enter All Files
Row is encapsulated or recoded again, it is only necessary to which increase turns package module accordingly on HTTP server.
3rd, more preferable CDN is supported：No matter CDN (Content Delivery Network, Content Delivery Network) system is
No support content caching, turning encapsulation technology in real time can all support very well.CDN system for supporting caching, can increase in CDN rear ends
Plus turning package server in real time as source server, the content after turning encapsulation enters CDN system, and CDN can be made to obtain more
Efficient content distribution ability.To the CDN system without caching, then selected source format text can be preserved on CDN Edge Servers
Part, and increase turns package module in real time on Edge Server.
4th, DRM is supported：Due to the unicast characteristic of HTTP stream media protocols, DRM can be integrated into and turned in real time in packing service,
Dynamic encryption request content.
5th, without real-time transcoding, playout-delay will not be brought：Different from real-time transcoding, it is not required to streaming media files and is solved
Code and re-encoding, need to only do to encapsulation format and once change, many less with respect to transcoding amount of calculation, will not bring playout-delay.
Fig. 5 is flow chart of the present invention based on the Internet video-on-demand method for turning encapsulation in real time, internet video program request
Method supports the adaptive stream media based on http protocol to play or progressive download video playback.It can by such as Fig. 1 or
Internet video-on-demand system 100 shown in Fig. 2 is realized, including step has：
Step S501, storing step preserves selected source format files in stream media to a kind of files in stream media of code check.It is excellent
Choosing, source format files in stream media is MP4 formatted files and/or MPEG2-TS formatted files.
Step S502, asks receiving step, when receiving user's order request, analyzes user's order request corresponding
Source format files in stream media and object format.
Step S503, decapsulation step is decapsulated to source format files in stream media, is extracted corresponding source format sound and is regarded
Frequency flows.This step is preferably, and source format files in stream media is analyzed, and extracts corresponding source format audio/video flow and its matchmaker
Body information, media information includes media file coding information, time started or sequence number, selection time and/or video frame size.
Step S504, turns encapsulation step, and source format audio/video flow is packaged into object format Streaming Media according to object format
File.This step is preferably, and according to object format and media information, source format audio/video flow is packaged into object format stream matchmaker
Body file.Difference is had according to selected streaming media playing agreement difference, then packaged media file format.For example, apple HLS is used
MPEG2TS file formats, Microsoft MSS and ADOBE HAD uses MP4 file formats.
Object format files in stream media is distributed to playback terminal by step S505, issuing steps.Preferably, by target
Format stream media file or play list file carry out http response encapsulation, and are distributed to playback terminal.
Fig. 6 is the flow chart that the present invention is preferably based on the Internet video-on-demand method for turning encapsulation in real time, internet video
Order method supports the adaptive stream media based on http protocol to play or progressive download video playback, and it can be by such as scheming
Internet video-on-demand system 100 shown in 2 is realized, including step has：
Step S601, storing step preserves selected source format files in stream media to a kind of files in stream media of code check.It is excellent
Choosing, source format files in stream media is MP4 formatted files and/or MPEG2-TS formatted files.
The selected source format file preserved on selection video server or CDN Edge Server, it is desirable to including：1st, it is real
When calculate simple；2nd, the metadata comprising stream description；3rd, common format, have correlation is created in statistical tool.Three more than
It is individual to require, there are following two common formats may be selected, MP4 file formats and MPEG2-TS file formats.Both file formats
It is each advantageous, played for progressive download, support that the terminal of MP4 file formats is more, and also the former is for the branch of multi code Rate of Chinese character
Hold relatively more preferably, and MPET2-TS file formats can preferably preserve user metadata, to being cut into slices by TS based on HLS protocol
For, calculate in real time simpler.
Step S602, asks receiving step, when receiving user's order request, analyzes user's order request corresponding
Source format files in stream media and object format.
Step S603, decapsulation step is decapsulated to source format files in stream media, is extracted corresponding source format sound and is regarded
Frequency flows.This step is preferably, and source format files in stream media is analyzed, and extracts corresponding source format audio/video flow and its matchmaker
Body information, media information includes media file coding information, time started or sequence number, selection time and/or video frame size.
Step S604, judgment step, it is to obtain object format files in stream media or played column to judge user's order request
List file, encapsulation step S605 is turned if obtaining object format files in stream media and then performing, and otherwise performs following playlist lifes
Into step S607.
Step S605, turns encapsulation step, and source format audio/video flow is packaged into object format Streaming Media according to object format
File.This step is preferably, and according to object format and media information, source format audio/video flow is packaged into object format stream matchmaker
Body file.
Object format files in stream media is encrypted step S606, encrypting step.
Step S607, playlist generation step generates corresponding playlist text according to media information and pre-defined rule
Part.Different according to selected streaming media playing agreement, playlist content is different.Apple HLS uses M3U8, Microsoft MSS and
ADOBE HAD use manifest files.In order to improve playing efficiency, network delay is reduced, simultaneously because play list file
Very little, can typically be previously generated.Due to the multi code Rate of Chinese character adaptive characteristic of the adaptive class stream media protocols of HTTP, stream description information one
As generated by program publisher, streaming media server will not be produced, and only provide broadcasting for contents list information, i.e. certain code check
Emplace list file.
Object format files in stream media or play list file after encryption is distributed to by step S608, issuing steps
Playback terminal.
In an embodiment of the present invention, Internet video-on-demand method is applied to turn package server in real time, slow for having
The first content distribution network of deposit system, turns package server and is deployed in first content distribution network rear end in real time.The request
Receiving step S502 or S602 further comprise：
When receiving user's order request, if user's point is not present in the first edge server of first content distribution network
The corresponding source format files in stream media of request is broadcast, then first edge server obtains source by Hui Yuan from the real-time package server that turns
Format stream media file is simultaneously buffered in caching system, then perform decapsulation step.If the first side of first content distribution network
There is the corresponding source format files in stream media of user's order request in edge server, then directly perform decapsulation step.
In an alternative embodiment of the invention, Internet video-on-demand method is applied to turn package server in real time, for nothing
Second content distributing network of caching system, turns the second edge clothes that package server is deployed in the second content distributing network in real time
It is engaged on device.Request the receiving step S502 or S602 further comprise：
When receiving user's order request, second edge server please in the inquiry user program request of book server storage system
Corresponding source format files in stream media is sought, and performs decapsulation step.
Specific embodiments of the present invention are described with a business application below.In this application, it is while supporting MP4
Progressive download is played and HLS is played, and source format file uses MP4, is turned package server and is realized what is cut into slices from MP4 file to TS
Form is changed and exports http response, specifically includes following steps：
1st, the HTTP module of server is received after the order request that user proposes, analyzes the request URL (Uniform of user
Resoure Locator：URL), broadcast information, including source format (MP4) filename are obtained from URL, is cut
Piece time started or section start sequence number, object format file type (TS), optional play list file type.
2nd, decapsulation module is analyzed source format file (MP4), extracts media information, including media file coding letter
Breath, duration and video frame size, time started, if key frame, the information such as starting position in MP4 files.
3rd, it is to obtain object format file (TS sections) or play list file to judge request, and takes corresponding step
It is further processed.
4th, according to user's request section time started or sequence number, the audio/video frames in package module selection time and duration are simultaneously
It is packaged into MPEG-TS files.
5th, the media information that optional playlist module is obtained according to step 2, and played according to certain rule generation
Listing file.
6th, MPEG-TS sections content is encrypted according to user's request, encrypting module obtains encryption key, and carries out
AES (Advanced Encryption Standard, Advanced Encryption Standard) is encrypted.
7th, HTTP service module carries out http response encapsulation to the content of generation, and is sent to user.
In summary, the present invention only preserves a kind of selected source lattice to a kind of files in stream media of code check within the storage system
Formula files in stream media, when receiving user's order request, analyze the corresponding source format files in stream media of user's order request and
Object format, dresses up source format audio/video flow, then the circulation of source format audio frequency and video is divided by the progress deblocking of source format files in stream media
User is distributed to after dressing up object format files in stream media.Whereby, the present invention turns encapsulation technology by real-time video, in storage system
A kind of selected source format files in stream media is only preserved in system to a kind of files in stream media of code check, storage can be greatly reduced and opened
Pin；And from unlike real-time transcoding technology, the present invention is not required to streaming media files and is decoded and re-encoded, and only need pair
Encapsulation format, which is done, once to be changed, and the amount of calculation with respect to transcoding is many less, will not bring playout-delay.The present invention simultaneously support with
Progressive download video playback and adaptive stream media based on http protocol are played.
Certainly, the present invention can also have other various embodiments, ripe in the case of without departing substantially from spirit of the invention and its essence
Various corresponding changes and deformation, but these corresponding changes and change ought can be made according to the present invention by knowing those skilled in the art
Shape should all belong to the protection domain of appended claims of the invention.
Claims (14)
1. it is a kind of based on the Internet video-on-demand method for turning encapsulation in real time, it is characterised in that to include：
Storing step, selected source format files in stream media is preserved to a kind of files in stream media of code check；
Receiving step is asked, when receiving user's order request, the corresponding source lattice of user's order request are analyzed
Formula files in stream media and object format；
Decapsulation step, is decapsulated to the source format files in stream media, extracts corresponding source format audio/video flow；
Turn encapsulation step, the source format audio/video flow is packaged into by object format files in stream media according to the object format；
Issuing steps, playback terminal is distributed to by the object format files in stream media；
The source format files in stream media is stored in the Edge Server of content distributing network or video server；
The Internet video-on-demand method is applied to turn package server in real time, for there is the distribution of the first content of caching system
Network, described turning package server is deployed in the first content distribution network rear end in real time；
The request receiving step further comprises：
When receiving user's order request, if institute is not present in the first edge server of the first content distribution network
State the corresponding source format files in stream media of user's order request, then the first edge server by Hui Yuan from the reality
When turn package server and obtain the source format files in stream media and be buffered in the caching system, then perform the decapsulation
Step；If it is corresponding described to there is user's order request in the first edge server of the first content distribution network
Source format files in stream media, then directly perform the decapsulation step；Or
The Internet video-on-demand method is applied to turn package server in real time, for the second content distribution without caching system
Network, it is described to turn package server in real time and be deployed on the second edge server of second content distributing network；
The request receiving step further comprises：
When receiving user's order request, the second edge server is in the book server storage system inquiry use
The corresponding source format files in stream media of family order request, and perform the decapsulation step.
2. Internet video-on-demand method according to claim 1, it is characterised in that the source format files in stream media is
MP4 formatted files and/or MPEG2-TS formatted files.
3. Internet video-on-demand method according to claim 1, it is characterised in that the decapsulation step is further wrapped
Include：
The source format files in stream media is analyzed, corresponding the source format audio/video flow and its media information is extracted,
The media information includes media file coding information, time started or sequence number, selection time and/or video frame size；
The encapsulation step that turns further comprises：
According to the object format and the media information, the source format audio/video flow is packaged into the object format stream matchmaker
Body file.
4. Internet video-on-demand method according to claim 3, it is characterised in that also wrapped after the decapsulation step
Include：
Judgment step, it is to obtain the object format files in stream media or playlist text to judge user's order request
Part, if obtain the object format files in stream media then perform it is described turn encapsulation step, otherwise perform following playlists lifes
Into step；
Playlist generation step, the corresponding play list file is generated according to the media information and pre-defined rule；
The issuing steps include：
The play list file is distributed to playback terminal.
5. Internet video-on-demand method according to claim 4, it is characterised in that the issuing steps are further wrapped
Include：
The object format files in stream media or the play list file are subjected to http response encapsulation, and are distributed to described
Playback terminal.
6. Internet video-on-demand method according to claim 1, it is characterised in that described to turn after encapsulation step and institute
Also include before stating issuing steps：
Encrypting step, the object format files in stream media is encrypted；
The issuing steps further comprise：
The object format files in stream media after encryption is distributed to playback terminal.
7. Internet video-on-demand method according to claim 1, it is characterised in that the Internet video-on-demand method
The adaptive stream media based on http protocol is supported to play or progressive download video playback.
8. it is a kind of based on the Internet video-on-demand system for turning encapsulation in real time, it is characterised in that to include：
Memory module, selected source format files in stream media is preserved for the files in stream media to a kind of code check；
Request receiving module, it is corresponding described for when receiving user's order request, analyzing user's order request
Source format files in stream media and object format；
Decapsulation module, for being decapsulated to the source format files in stream media, extracts corresponding source format audio/video flow；
Turn package module, for the source format audio/video flow to be packaged into object format Streaming Media text according to the object format
Part；
Release module, for the object format files in stream media to be distributed into playback terminal；
The source format files in stream media is stored in the Edge Server of content distributing network or video server；
The Internet video-on-demand system is applied to turn package server in real time, for there is the distribution of the first content of caching system
Network, described turning package server is deployed in the first content distribution network rear end in real time；
The request receiving module is used for when receiving user's order request, if the of the first content distribution network
The corresponding source format files in stream media of user's order request is not present in one Edge Server, then the first edge clothes
Business device by Hui Yuan from it is described turn package server in real time and obtain the source format files in stream media and be buffered in the caching be
In system, then the decapsulation module is transferred to perform；If the first edge server of the first content distribution network is present
The corresponding source format files in stream media of user's order request, then directly transfer to the decapsulation module to perform；Or
The Internet video-on-demand system is applied to turn package server in real time, for the second content distribution without caching system
Network, it is described to turn package server in real time and be deployed on the second edge server of second content distributing network；
The request receiving module is used for when receiving user's order request, and the second edge server is in this service
Device storage system inquires about the corresponding source format files in stream media of user's order request, and transfers to the decapsulation module
Perform.
9. Internet video-on-demand system according to claim 8, it is characterised in that the source format files in stream media is
MP4 formatted files and/or MPEG2-TS formatted files.
10. Internet video-on-demand system according to claim 8, it is characterised in that the decapsulation module is used for pair
The source format files in stream media is analyzed, and extracts corresponding the source format audio/video flow and its media information, the matchmaker
Body information includes media file coding information, time started or sequence number, selection time and/or video frame size；
The package module that turns is used to, according to the object format and the media information, the source format audio/video flow be encapsulated
Into the object format files in stream media.
11. Internet video-on-demand system according to claim 10, it is characterised in that also include：
Judge module, for judging that user's order request is to obtain the object format files in stream media or playlist
File, then transfers to the package module that turns to perform, otherwise transfers to following broadcastings if obtaining the object format files in stream media
List Generating Module is performed；
Playlist generation module, for according to the corresponding playlist text of the media information and pre-defined rule generation
Part；
The release module, for the play list file to be distributed into playback terminal.
12. Internet video-on-demand system according to claim 11, it is characterised in that the release module is used for institute
State object format files in stream media or the play list file carries out http response encapsulation, and be distributed to described play eventually
End.
13. Internet video-on-demand system according to claim 8, it is characterised in that also include：
Encrypting module, for the object format files in stream media for turning package module output to be encrypted；
The release module is used to the object format files in stream media after encryption being distributed to playback terminal.
14. Internet video-on-demand system according to claim 8, it is characterised in that the internet video program request system
System supports the adaptive stream media based on http protocol to play or progressive download video playback.
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| CN104333765B (en) * | 2014-10-23 | 2018-04-10 | 无锡天脉聚源传媒科技有限公司 | A kind of processing method and processing unit of net cast stream |
| CN104581228A (en) * | 2015-01-06 | 2015-04-29 | 南京爱布谷网络科技有限公司 | Bandwidth self-adaptation streaming media system serving various terminals |
| CN106162377B (en) * | 2015-04-08 | 2019-06-21 | 中国移动通信集团公司 | Conversion method, device, BM-SC and the terminal of adaptive stream media technology |
| CN105872572A (en) * | 2015-12-14 | 2016-08-17 | 乐视云计算有限公司 | Live broadcast video processing method and device |
| CN108271039B (en) * | 2016-12-30 | 2021-11-12 | 中兴通讯股份有限公司 | File sending method and device |
| CN106792271A (en) * | 2016-12-30 | 2017-05-31 | 中广热点云科技有限公司 | The system and method for document presentation association in adaptive stream media |
| CN110213197A (en) * | 2018-02-28 | 2019-09-06 | 北京京东尚科信息技术有限公司 | Audio file tune listens method and system |
| CN109963199A (en) * | 2019-04-23 | 2019-07-02 | 中国联合网络通信集团有限公司 | Content distributing network and its distribution method |
| CN110225399B (en) * | 2019-06-19 | 2021-11-23 | 深圳市共进电子股份有限公司 | Streaming media processing method and device, computer equipment and storage medium |
| CN112449212B (en) * | 2019-08-28 | 2022-11-04 | 杭州海康威视系统技术有限公司 | Audio and video code stream processing method and device and control equipment |
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