CN101800894B - Method and system for converting and transmitting multimedia video and audio - Google Patents
Method and system for converting and transmitting multimedia video and audio Download PDFInfo
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Abstract
The invention relates to a method and a system for converting and transmitting multimedia video and audio. More particularly, the method for converting multimedia video and audio comprises the following steps of: connecting to a webpage sever; downloading a user interface and a multimedia object from the webpage server; connecting to a media server through a network protocol; driving a streaming capturer; capturing a streaming; transmitting the captured streaming into a video-audio proxy server through an video-audio storage; converting the streaming into an instant media streaming; transmitting the instant media streaming into the media server; and transmitting the media streaming into a multimedia application player through a network protocol. The invention also discloses the system for converting the multimedia video and audio; The system does not generate entity files to occupy system resources, the media streaming can not occupy too much bandwidth, the files can be played without spending excessive time to download, and the play-and-view and instant monitoring functions of video and audio can be simultaneously provided.
Description
Technical field
The present invention relates to the method and system of a kind of multimedia video (audio video) conversion, and particularly relate to a kind of method and system that the open source code server carries out the multimedia video conversion of using.
Background technology
Along with popularizing of scientific and technological prosperity and broadband and photographic goods, short-movie information is propagated its belief on a large scale.Make network user become the information publisher, and private movie theatre, film issue station, news station that the user more can set up oneself are waited and are replaced traditional communications media by traditional reception information person. Video etc.Yet multimedia video can produce the audio/video file of different sizes along with its different image codings technology, makes the user must spend more time to come the downloading and playing audio/video file.So,,, play the online multimedia file like Windows Media Player, QuickTime, RealPlayer, Flash Player etc. just each tame manufacturer provides many different online Video Streaming and network multimedia players.
The video coding technique Flash Video that Adobe Flash provides abbreviates FLV as, is a kind of file format of utilizing Adobe FlashPlayer to transmit video through network.Because of the demand of its low frequency range and can be simply be embedded in individual's blog or other websites and rake in inundatory popularity and success by Flash Plug-in.In addition, widespread usage is on network for Adobe Flash now, and almost each network user has all been installed Adobe Flash Player already.So when adopting FLV, need not to install in addition more any additional insert.And the Video Streaming of Flash is stable smooth again, and can not take too many frequency range.Add and can be cross-platform, so the developer must not consider the problem of browser compatibility yet.Being compared to other Video Streamings, is the optimal selection under the present network application vigorously.Flourish along with video website, this file format will be popularized on network very much.
Please with reference to Fig. 1, it illustrates the sketch map of Flash video coding technique.Use the Flash video coding technique, must be at the Flash media server (Flash Media Server) 110 of server end framework Adobe company exploitation.Utilize Flash media server 110 to change audio/video file (for example mpeg file 115) and generation FLV file 118.Again FLV file 118 is wrapped in the inside of SWF object 130, can on network, play through the Flash player (Adobe FlashPlayer) 150 of Adobe company exploitation.
Yet the Flash media server of Adobe company exploitation is not free shareware, and it can't directly catch the audio and video information on video multimedia equipment such as the network monitoring video camera (Network Based IP Camera).Therefore, the method and system that design a kind of multimedia video conversion are to improve above-mentioned shortcoming.
Summary of the invention
Therefore, the object of the invention is exactly in the method and system that a kind of multimedia video conversion is provided, and uses the application of media server as the server of video transmission.In whole process, do not produce (being stored in hard disk) entity file and occupying system resources.Media stream will can not take too many frequency range, and not need the time file in download of overspending to play.Therefore, the present invention can provide audio-visual with broadcasting with seeing and the function of immediately monitoring.
According to one embodiment of the invention, a kind of method of multimedia video conversion may further comprise the steps: link to a web page server; Download a user interface and a multimedia object (multimedia obiect) from this web page server; Through a procotol, link to a media server; Drive a crossfire acquisition device (media stream obtaining means); Capture a crossfire (stream); This crossfire that is captured is sent to an audio-visual acting server through an audio-visual holder; Changing this crossfire is an instant media stream; Transmit this instant media stream to this media server; And should be sent to a multimedia application player through this procotol by instant media stream.
According to another embodiment of the present invention, a kind of system of multimedia video conversion comprises: the crossfire acquisition device, in order to capture a crossfire from a video multimedia equipment; Audio-visual acting server is an instant media stream in order to change this crossfire; Media server; And audio-visual holder, in order to store this crossfire that this crossfire acquisition device is captured.Wherein, media server comprises the Media proxy application module, in order to drive this crossfire acquisition device.
Description of drawings
For letting above-mentioned and other purposes of the present invention, characteristic, advantage and the embodiment can be more obviously understandable, the explanation of appended accompanying drawing be following:
Fig. 1 illustrates the sketch map of Flash video coding technique.
Fig. 2 illustrates the method flow diagram according to a kind of multimedia video conversion of one embodiment of the invention.
Fig. 3 illustrates the method flow diagram according to a kind of multimedia video conversion of another embodiment of the present invention.
Fig. 4 A illustrate Fig. 2 step 250 " acquisition crossfire " the flow chart of steps that possibly comprise.
Fig. 4 B illustrate Fig. 2 step 250 " acquisition crossfire " the flow chart of steps that possibly comprise.
Fig. 5 illustrate Fig. 2 step 270 " conversion crossfire be instant media stream " the step that possibly comprise.
Fig. 6 illustrates the system schematic according to a kind of multimedia video conversion of further embodiment of this invention.
Fig. 7 illustrates the configuration diagram of crossfire acquisition device 612.
Fig. 8 illustrates the configuration diagram of audio-visual acting server 614.
Fig. 9 illustrates the configuration diagram of the transducer 810 of Fig. 8.
Figure 10 illustrates the configuration diagram of crossfire conveyer.
The primary clustering symbol description:
110:Flash media server 720: codec
115:MPEG file 730: crossfire requester
118:FLV file 740: divide group of receivers
130:SWF object 750: separate burster
150:Flash player 810: transducer
210-290: step 820: crossfire conveyer
600: 830: the first media servers of multimedia video converting system
612: 840: the second media servers of crossfire acquisition device
614: audio-visual acting server 910: demodulation multiplexer
616: 917: the first Media proxy application modules of media server
617: 918: the second Media proxy application modules of Media proxy application module
618: audio-visual holder 920: decoder
620: 928: the first crossfire receivers of the webserver
622: 929: the second crossfire receivers in user interface
624: multimedia object 930: encoder
642: user's computer 940: multiplexer
670: based on the web camera 950 of USB: the input and output conveyer
675: based on network network monitoring video camera 960: wrapper
710: Data Source filter 970: the network conveyer
Embodiment
Next please with reference to the detailed description of the embodiment of the invention, the example of wherein being mentioned can together describe together with accompanying drawing.In the case of any possible, employed same reference numerals has all been represented identical or similar assembly in accompanying drawing and the explanation.
Please with reference to Fig. 2, it illustrates the method flow diagram according to a kind of multimedia video conversion of one embodiment of the invention.The method may further comprise the steps (should be appreciated that mentioned in the present embodiment step except that its order of special instruction, all can be adjusted its front and back order according to actual needs, even possibility while or part execution simultaneously):
(1) links to a server (step 210).The user can like ICP/IP protocol, be wired to pre-set web page server through general procotol.
(2) download user interface and multimedia object (step 220) from this web page server.The user can be downloaded to user interface (UI) and multimedia object (like the SWF object) user's browser through ICP/IP protocol.
(3) through procotol, link to media server (step 230).The SWF object that last step is downloaded will drive the Flash player, through procotol (like the RTMP agreement), be wired to media server.Media server is an open source code server, for example Red5 server (Red5 Server).
(4) drive crossfire acquisition device (step 240).But framework one Media proxy application module on media server, behind user and this Media proxy application module line, this Media proxy application module can drive the crossfire acquisition device.
(5) acquisition crossfire (step 250).Can do different processing with the acquisition crossfire to dissimilar video multimedia equipment.
(6) crossfire that is captured is sent to audio-visual acting server (step 260) through audio-visual holder.
(7) changing this crossfire is an instant media stream (step 270).Audio-visual acting server converts thereof into instant media stream according to different crossfires, promptly meets the instant crossfire of FLV Internet video form.
(8) transmit instant media stream to media server (step 280).
(9) instant media stream is sent to multimedia application player (step 290) through procotol.For example the red5 server is sent to the instant crossfire of Flash video (Flash Video live stream) the Flash player of user's computer through the RTMP agreement.
Please with reference to Fig. 3, it illustrates the method flow diagram according to a kind of multimedia video conversion of another embodiment of the present invention.Be with last embodiment difference; But the source of crossfire also has been present in the audio/video file among the audio-visual holder; After the crossfire acquisition device is driven (step 240); Just can the path of audio/video file be sent to audio-visual acting server (step 257), audio-visual acting server can convert audio/video file to instant media stream (step 258).
Please with reference to Fig. 4 A, its illustrate Fig. 2 step 250 " acquisition crossfire " the flow chart of steps that possibly comprise.At first, obtain initial data (step 251) from one based on the web camera of USB.Come again, convert initial data to a MPEG-2 crossfire or H.264 crossfire (step 252).
Please with reference to Fig. 4 B, its illustrate Fig. 2 step 250 " acquisition crossfire " the flow chart of steps that possibly comprise.At first, send one to a based on network network monitoring video camera and obtain crossfire request (step 253).Come again, receive the respond packet (step 254) that based on network network monitoring video camera is passed back through network.Next, respond packet is separated the operation (step 255) of grouping.At last, obtain crossfire (step 256).
Please with reference to Fig. 5, its illustrate Fig. 2 step 270 " the conversion crossfire is instant media stream " the step that possibly comprise:
(1) source of differentiation crossfire is file or instant crossfire (step 269).
(2) when the source of differentiating crossfire was file, the step that converts instant media stream into comprised following steps:
(2.1) file is carried out demultiplexing (de-multiplex) to take out audio frequency crossfire and video streaming (step 271).
(2.2) differentiate the form of audio frequency crossfire and the form of video streaming and whether be supported (step 272).
(2.3) when the form of the form of audio frequency crossfire or video streaming is not supported, to audio frequency crossfire or video streaming decode (step 273).
(2.4) audio frequency crossfire or video streaming are encoded to are supported form (step 274).
(2.5) audio frequency crossfire and video streaming are merged into instant media stream (step 275).With regard on the other hand, when the form of the form of audio frequency crossfire and video streaming is supported, can directly audio frequency crossfire and video streaming be merged into instant media stream.
(3) when the source of differentiating crossfire was an instant crossfire, the step that converts instant media stream into comprised following steps:
(3.1) take out audio frequency crossfire and video streaming (step 276) from instant crossfire.
(3.2) differentiate the form of audio frequency crossfire and the form of video streaming and whether be supported (step 277).
(3.3) when the form of the form of audio frequency crossfire or video streaming is not supported, to audio frequency crossfire or video streaming decode (step 278).
(3.4) audio frequency crossfire or video streaming are encoded to are supported form (step 279).
(3.5) audio frequency crossfire and video streaming are merged into instant media stream (step 275).With regard on the other hand, when the form of the form of audio frequency crossfire and video streaming is supported, can directly audio frequency crossfire and video streaming be merged into instant media stream (step 275).
The situation that in step 280, transmits instant media stream to media server has two kinds: the one, when media server and audio-visual acting server framework are on same computer; (Input Output Stream IOStream) can transmit instant media stream through the input and output crossfire.Another is that (like RTP) transmits instant media stream through network communication protocol when media server and audio-visual acting server framework are on the various computing machine.
Please with reference to Fig. 6, it illustrates the system schematic according to a kind of multimedia video conversion of further embodiment of this invention.Multimedia video converting system 600 comprises: crossfire acquisition device 612, audio-visual acting server 614, media server 616 and audio-visual holder 618.Crossfire acquisition device 612 can be from video multimedia equipment acquisition crossfire.Wherein, video multimedia equipment for example can be web camera (USB Based Web Camera) 670 or based on network network monitoring video camera 675 based on USB.Yet the video multimedia equipment that crossfire acquisition device 612 is supported not is web camera 670 or the based on network network monitoring video camera 675 that is confined to based on USB, also extendible in the future its supportive to video multimedia equipment.Audio-visual acting server 614 can convert crossfire into instant media stream, for example the instant crossfire of Flash video.Media server 616 can open source code server (for example Red5 server) as the server of video file transmission.Moreover media server 616 can comprise Media proxy application module 617, and it can drive crossfire acquisition device 612.Wherein Media proxy application module 617 can be a Flash file format application module.
In one embodiment, through general ICP/IP protocol (for example HTTP) user's computer 642 connectable to network servers 620 (for example http server) user interface (UI) 622, multimedia object 624 (for example SWF object) etc. is downloaded to browser.The SWF object will drive the Flash player and be connected to media server 616 (for example Red5 server) through the RTMP agreement.Then; The Media proxy application module 617 of framework on media server 616 will drive crossfire acquisition device 612 and capture crossfire to be directed against different video multimedia equipment, and the instant crossfire that will capture (live stream) is sent to audio-visual acting server 614 through audio-visual holder 618.Then, audio-visual acting server 614 will convert crossfire the instant crossfire of FLV to according to different stream formats, and be sent to the Media proxy application module 617 of framework on media server 616.Play in the last Flash player that utilizes the RTMP agreement instant crossfire to be sent to user's computer 642 again.
Please with reference to Fig. 7, it illustrates the configuration diagram of crossfire acquisition device 612 simultaneously.Crossfire acquisition device 612 comprises Data Source filter 710, codec 720, crossfire requester 730, branch group of receivers 740 and separates burster 750.When system 600 had the web camera 670 based on USB, Data Source filter 710 can be obtained initial data from the web camera 670 based on USB.Codec 720 can convert initial data to MPEG-2 crossfire or crossfire H.264.On the other hand, when system 600 had based on network network monitoring video camera 675, crossfire requester 730 can send one to based on network network monitoring video camera 675 obtain crossfire request (Get Stream Request).Then, branch group of receivers 740 can receive the respond packet that based on network network monitoring video camera 675 is passed back through network, and separates the operation that burster 750 can be separated grouping to respond packet.
Please with reference to Fig. 8, it illustrates the configuration diagram of audio-visual acting server 614.Audio-visual acting server 614 comprises transducer 810 and crossfire conveyer 820.Transducer 810 can with the MPEG-2 crossfire or H.264 crossfire convert instant media stream into, crossfire conveyer 820 can be sent to first media server 830 or second media server 840 with instant media stream.First media server 830 and audio-visual acting server 614 be framework on same computer, can transmit instant media stream through the input and output crossfire.Second media server 840 and audio-visual acting server 614 be framework on the various computing machine, need transmit instant media stream through network communication protocol (like RTP).
Please with reference to Fig. 9, it illustrates the configuration diagram of the transducer 810 of Fig. 8.Transducer 810 comprises demodulation multiplexer 910, decoder 920, encoder 930 and multiplexer 940.How below provide detailed embodiment to explain between each assembly works.After audio-visual acting server 614 receives crossfire, the transducer 810 in the audio-visual acting server 614 will carry out different conversion regimes to different crossfire source and stream format (as shown in table 1) that FLV supported.Its change over condition that possibly occur has following four kinds: one, crossfire source is file, and the stream format of file to be FLV do not support; Two, the crossfire source is file, but the stream format of file is supported by FLV; Three, the crossfire source is not supported but the form of crossfire is FLV for instant crossfire; And, four, crossfire source is instant crossfire, and the form of crossfire is supported by FLV.The conversion specification specified of various situation is following:
One, crossfire source is file, and the stream format of file to be FLV do not support: when the crossfire source is a file, demodulation multiplexer 910 will be directed against this file earlier carry out the operation of demultiplexing, take out its audio frequency crossfire and video streaming respectively from this document.Whether then, differentiate the form of its audio frequency crossfire and the form of video streaming is supported by FLV.When finding that FLV does not support the form of form or video streaming of audio frequency crossfire, 920 of decoders to its operation of decoding of unsupported audio frequency crossfire or video streaming.By encoder 930 audio frequency crossfire or video streaming are encoded to the form that FLV supports again.Last by multiplexer 940 audio frequency crossfire and video streaming are merged into the instant crossfire of FLV again, back kick is passed crossfire conveyer 820.
Two, the crossfire source is file, but the stream format of file is supported by FLV: when the crossfire source is a file, demodulation multiplexer 910 will carry out the operation of demultiplexing to this file earlier, take out its audio frequency crossfire and video streaming respectively from this document.Whether then, differentiate the form of its audio frequency crossfire and the form of video streaming is supported by FLV.When finding that FLV supports the form of form or video streaming of audio frequency crossfire, then directly audio frequency crossfire and video streaming are merged into the instant crossfire of FLV by multiplexer 940, back kick is passed crossfire conveyer 820.
Three, the crossfire source is instant crossfire, does not support but the form of crossfire is FLV: when the crossfire source was instant crossfire, transducer 810 judged whether the form of its audio frequency crossfires and the form of video streaming are supported by FLV.When finding that FLV does not support the form of form or video streaming of its audio frequency crossfire, decoder 920 can to its operation of decoding of unsupported audio frequency crossfire or video streaming.By encoder 930 audio frequency crossfire or video streaming are encoded to the form that FLV supports again.Last by multiplexer 940 audio frequency crossfire and video streaming are merged into the instant crossfire of FLV again, back kick is passed crossfire conveyer 820.
Four, the crossfire source is instant crossfire, and the form of crossfire is supported by FLV: when the crossfire source was instant crossfire, transducer 810 judged whether the form of its audio frequency crossfires and the form of video streaming are supported by FLV.When finding that FLV supports the form of form and video streaming of its audio frequency crossfire, then directly audio frequency crossfire and video streaming are merged into the instant crossfire of FLV by multiplexer 940, back kick is passed crossfire conveyer 820.
Table 1
| Type | Audio frequency | Video |
| Support form | Linear PCM; Platform endian (linear PCM; Platform endian) ADPCM MP3 Linear PCM; Little endian (linear PCM, little endian) Nellymoser 16-kHz mono Nellymoser 8-kHz mono Nellymoser is A-law logarithmic PCM (G.711 A-rule algorithm PCM) mu-law logarithmic PCM (G.711 mu-rule algorithm PCM) reserved (reservation) AAC MP3 8-Khz Device-specific sound (device-specific sound) G.711 G.711 | JPEG (currently unused) (JPEG (current use)) Sorenson is Screen video (screen video) On2 VP6 On2 VP6 with alpha channel (the On2 VP6 of band alpha passage) Screen video version 2 (screen video version 2) AVC H.263 |
When the crossfire conveyer receives instant crossfire, will take different modes to transmit instant crossfire according to the position (being the position of media server) of Media proxy application module institute construction.Please with reference to Figure 10, it illustrates the configuration diagram of crossfire conveyer.Crossfire conveyer 820 comprises input and output conveyer 950, wrapper 960 and network conveyer 970.When media server and audio-visual acting server 614 are frameworks on same computer the time, input and output conveyer 950 can be sent to first media server 830 with instant media stream through the input and output crossfire.After the first crossfire receiver 928 on the first Media proxy application module 917 receives instant media stream, instant media stream will be sent to user's computer 642 through RTMP.At this moment, the user can carry out the broadcast of instant multimedia content through user's operation interface.
When media server and audio-visual acting server 614 are that framework is on the various computing machine time; The wrapper 960 of crossfire conveyer 820 will encapsulate the operation of (encapsulate) earlier to instant media stream, be sent on another computer through network conveyer 970 again.The second crossfire receiver 929 in the second Media proxy application module 918 will be directed against the operation that grouping is separated in the grouping of being received then, and instant media stream is taken out.For example can comprise the RTP server in the second crossfire receiver 929 and separate burster and handle RTP and divide into groups to take out instant media stream.Instant media stream will be sent to user's computer 642 through RTMP, and the user can carry out the broadcast of instant multimedia content through user's operation interface.
In sum, the method and system of disclosed multimedia video conversion are to use the application of media server as the server of video transmission in the previous embodiment.In the above-described embodiments; Audio-visual acting server not only can convert existing audio/video file in audio-visual holder to and meet the crossfire that can support form, also can be through the crossfire acquisition device and from various video multimedia equipment (like web camera and the based on network network monitoring video camera based on USB) acquisition crossfire.Be supported form with its format conversion again, and be sent to user's computer through media server (like the Red5 server) and play.
In addition, in whole process, do not produce (being stored in hard disk) entity file and occupying system resources.Media stream will can not take too many frequency range, and not need the time file in download of overspending to play.Therefore, the present invention can provide audio-visual with broadcasting with seeing and the function of immediately monitoring.
Though the present invention with execution mode openly as above; Yet it is not in order to limit the present invention; Any those skilled in the art; Do not breaking away from the spirit and scope of the present invention, should do various changes and retouching, so protection scope of the present invention should be looked the content that the appending claims scope defined and is as the criterion.
Claims (20)
1. the method for multimedia video conversion may further comprise the steps:
(a) link to a web page server;
(b) download a user interface and a multimedia object from said web page server;
(c) through a procotol, link to a media server;
(d) drive a crossfire acquisition device;
(e) acquisition one crossfire;
(f) the said crossfire that is captured is sent to an audio-visual acting server through an audio-visual holder;
(g) the said crossfire of conversion is an instant media stream;
(h) transmit said instant media stream to said media server; And
(i) said instant media stream is sent to a multimedia application player through said procotol.
2. the method for claim 1, wherein said multimedia object is a SWF object.
3. the method for claim 1, wherein said procotol is a RTMP agreement.
4. the method for claim 1, wherein said instant media stream is the instant crossfire of a Flash video.
5. the method for claim 1, wherein said media server is an open source code server.
6. method as claimed in claim 5, wherein said open source code server are a Red5 server.
7. the method for claim 1 also is included in step (d) and drives and carry out following steps after the crossfire acquisition device and substitute wherein step (e), (f) and (g):
Transmit the audio-visual acting server in path to of an audio/video file; And
Changing said audio/video file is an instant media stream.
8. the method for claim 1, wherein the operation of step (e) acquisition one crossfire may further comprise the steps:
Obtain an initial data from one based on the web camera of USB; And
Convert said initial data to a MPEG-2 crossfire or H.264 crossfire.
9. the method for claim 1, wherein the operation of step (e) acquisition one crossfire may further comprise the steps:
Send one to a based on network network monitoring video camera and obtain the crossfire request;
Receive the respond packet that said based on network network monitoring video camera is passed back through network;
Said respond packet is separated grouping; And
Obtain a crossfire.
10. the method for claim 1, wherein the said crossfire of step (g) conversion is that the operation of an instant media stream may further comprise the steps:
The source of differentiating said crossfire is a file or an instant crossfire;
When the source of differentiating said crossfire was said file, said conversion may further comprise the steps:
Said file is carried out demultiplexing to take out an audio frequency crossfire and a video streaming;
Whether differentiate the form of said audio frequency crossfire and the form of said video streaming is supported;
When the form of the form of said audio frequency crossfire or said video streaming is not supported, said audio frequency crossfire or said video streaming are decoded;
Said audio frequency crossfire or said video streaming be encoded to be supported form;
Said audio frequency crossfire and said video streaming are merged into an instant media stream; And
When the form of the form of said audio frequency crossfire and said video streaming is supported, said audio frequency crossfire and said video streaming are merged into an instant media stream;
When the source of differentiating said crossfire was said instant crossfire, said conversion may further comprise the steps:
Take out an audio frequency crossfire and a video streaming from said instant crossfire;
Whether differentiate the form of said audio frequency crossfire and the form of said video streaming is supported;
When the form of the form of said audio frequency crossfire or said video streaming is not supported, said audio frequency crossfire or said video streaming are decoded;
Said audio frequency crossfire or said video streaming be encoded to be supported form;
Said audio frequency crossfire and said video streaming are merged into an instant media stream; And
When the form of the form of said audio frequency crossfire and said video streaming is supported, said audio frequency crossfire and said video streaming are merged into an instant media stream.
11. the method for claim 1, wherein the operation of the said instant media stream of step (h) transmission to said media server may further comprise the steps:
When said media server and said audio-visual acting server are frameworks on same computer the time, transmit said instant media stream through the input and output crossfire.
12. the method for claim 1, wherein the operation of the said instant media stream of step (h) transmission to said media server may further comprise the steps:
When said media server and said audio-visual acting server are frameworks on the various computing machine time, transmit said instant media stream through network communication protocol.
13. the system of a multimedia video conversion comprises:
One crossfire acquisition device is in order to capture a crossfire from a video multimedia equipment;
One audio-visual acting server is an instant media stream in order to change said crossfire;
One media server comprises:
One Media proxy application module is in order to drive said crossfire acquisition device; And
One audio-visual holder is in order to store the said crossfire that said crossfire acquisition device is captured;
Wherein, said video multimedia equipment is a web camera based on USB; And
Wherein, said crossfire acquisition device comprises:
One Data Source filter is in order to obtain an initial data from said web camera based on USB; And
One codec is in order to convert said initial data to H.264 crossfire of one MPEG-2 crossfire or.
14. system as claimed in claim 13, wherein said instant media stream is the instant crossfire of a Flash video.
15. the system of a multimedia video conversion comprises:
One crossfire acquisition device is in order to capture a crossfire from a video multimedia equipment;
One audio-visual acting server is an instant media stream in order to change said crossfire;
One media server comprises:
One Media proxy application module is in order to drive said crossfire acquisition device; And
One audio-visual holder is in order to store the said crossfire that said crossfire acquisition device is captured;
Wherein, said video multimedia equipment is a based on network network monitoring video camera; And
Wherein, said crossfire acquisition device comprises:
One crossfire requester is obtained the crossfire request in order to send one to said based on network network monitoring video camera;
One fen group of receivers is in order to receive the respond packet that said based on network network monitoring video camera is passed back through network; And
One separates burster, in order to said respond packet is separated grouping.
16. system as claimed in claim 15, wherein said instant media stream is the instant crossfire of a Flash video.
17. the system of a multimedia video conversion comprises:
One crossfire acquisition device is in order to capture a crossfire from a video multimedia equipment;
One audio-visual acting server is an instant media stream in order to change said crossfire;
One media server comprises:
One Media proxy application module is in order to drive said crossfire acquisition device; And
One audio-visual holder is in order to store the said crossfire that said crossfire acquisition device is captured;
Wherein, said audio-visual acting server comprises:
One transducer is an instant media stream in order to change said crossfire; And
A string stream conveyer is in order to transmit said instant media stream to said media server; And
Wherein, said transducer comprises:
One demodulation multiplexer when being a file in order to the source when said crossfire, takes out an audio frequency crossfire and a video streaming from said file;
One decoder when not being supported in order to the form when the form of said audio frequency crossfire or said video streaming, is decoded to said audio frequency crossfire or said video streaming;
One encoder is supported form in order to said audio frequency crossfire or said video streaming are encoded to; And
One multiplexer is in order to be merged into an instant media stream with said audio frequency crossfire and said video streaming.
18. system as claimed in claim 17, wherein said instant media stream is the instant crossfire of a Flash video.
19. system as claimed in claim 17, wherein said crossfire conveyer comprises:
One input and output conveyer in order to when said media server and said audio-visual acting server to be framework on same computer the time, transmits said instant media stream through the input and output crossfire;
One wrapper in order to when said media server and said audio-visual acting server to be framework on the various computing machine time, encapsulates said instant media stream; And
One network conveyer in order to when said media server and said audio-visual acting server to be framework on the various computing machine time, transmits said instant media stream through network communication protocol.
20. system as claimed in claim 17, wherein said Media proxy application module comprises:
A string stream receiver is in order to receive and to handle the said instant media stream from said crossfire conveyer.
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| CN101800894B true CN101800894B (en) | 2012-06-27 |
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| CN102316145A (en) * | 2010-09-17 | 2012-01-11 | 苏州阔地网络科技有限公司 | Method for realizing video multicasting |
| CN102479233B (en) * | 2010-11-30 | 2015-05-06 | 腾讯科技（北京）有限公司 | Audio information storage method and device based on Adobe Flash software |
| CN102325173B (en) * | 2011-08-30 | 2013-12-11 | 重庆抛物线信息技术有限责任公司 | Mixed audio and video sharing method and system |
| CN102325181B (en) * | 2011-09-09 | 2014-03-05 | 重庆抛物线信息技术有限责任公司 | Instant audio/video interactive communication method based on sharing service and instant audio/video interactive communication system based on sharing service |
| US20140063339A1 (en) * | 2012-09-04 | 2014-03-06 | Google Inc. | In Browser Muxing and Demuxing For Video Playback |
| CN109756286A (en) * | 2019-01-23 | 2019-05-14 | 重庆邮电大学 | A kind of Network Synchronization broadcasting method of DMB audio |
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