CN100568966C - A kind of network transfer method of audio/video data - Google Patents
A kind of network transfer method of audio/video data Download PDFInfo
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Abstract
The invention discloses a kind of network transfer method of audio/video data, this method adopts real-time frame transcoding technology, is to deliver to receiving terminal after unit absolute coding compression (being transcoding), the packing with the high code check audio/video data of intending transmission with the audio/video frame, and receiving terminal is that unit reduction, coding (being transcoding) back are formed audio/video stream played in order or be stored as the audio/video file with audio/video frame independently still with the packet that receives in real time.It repeats steps such as getting audio/video frame, issue end encoding compression, transmission, reception, receiving encoding, broadcast and storage in transmission course, up to the audio/video data end of transmission.The present invention can be transmitted arbitrary high code check audio/video data real time high-speed under band-limited network environment, and can play the audio/video content in real time at receiving terminal, can save as the audio/video file of required quality and form again simultaneously.
Description
Technical field
The present invention relates to a kind of data transmission method, relate in particular to a kind of network transfer method of audio/video data.
Background technology
Along with digital technology and development of internet technology, people are also more and more higher to the Network Transmission demand of audio/video data.The Network Transmission of audio/video data has many advantages, extensively applies to fields such as television broadcasting, military affairs, communication, telecommuting, remote teaching, the Internet value-added service.But simultaneously because the data volume of audio/video file is often very big, particularly high-quality audio/video file, and the network bandwidth is limited, for realizing its transmission on network, increase the network bandwidth that is used for transfer of data as far as possible, or improve audio/video data compression and data transmission technology.The former need drop into a large amount of network equipment costs, nor may transform all-network, and therefore the emphasis of breaking through is the latter.
At present, known (uploading/download) and the streaming media transmission technique after the transmission over networks audio/video data mainly adopts the file reduced overall, transmitted, the both must be at first will intend the high code check of transmission according to the network bandwidth and needs, and (code check (BitRate) is meant the data volume that flows through in the unit interval, unit adopts kb/s (kilobits/second) usually, code check is high more, description to picture is just meticulous more, just approach raw frames more, image quality is high more, but simultaneously transmitted data amount is also more) the audio/video file of the low code check of audio/video document No. boil down to or memory device that files in stream media stores data issue end in for the transmission use, owing to there is different network environments, for As soon as possible Promising Policy transmits the file that need often need to make the different code checks of several covers, the higher file of the big access code rate of network bandwidth during transmission.This need take memory space on the one hand; Also need the time to be used for the encoding compression of audio/video data in addition; And also can only fix for audio/video data quality and form that receiving terminal obtains, needs that can not basis oneself be selected the audio/video data of other code checks and form separately.For receiving terminal, the audio/video data that also will hang down code check possibly is encoded to the audio/video data of high code check or extended formatting, as industries such as radio and television, to satisfy the needs of playback equipment, this needs the time of corresponding encoded again, and this moment, its audio/video data from the issue end obtained to meet the demands audio/video data required time T=T to receiving terminal
Fy+ T
c+ T
Jb(T in the formula
FyBe issue end audio/video data encoding compression time, T
JbBe receiving terminal audio/video data scramble time, T
cNetwork latency for audio/video data; Under the equivalent network bandwidth, transmit its T for File Compress
cDepend on transmitted data amount, irrelevant with the audio/video duration, transmit its T for Streaming Media
cDepend on that audio/video duration, transmitted data amount are the maximum of its two required time), this is fatal for such as fields such as news, radio and television, military affairs the industry of very strong timeliness demand being arranged.For File Compress transmission, it can't watch the audio/video content of transmission in transmission course, just can watch and handle after having only whole receptions to preserve to finish; Streaming Media transmission is that edge joint is received the limit and watched, and receiving terminal can only be watched, and can not preserve and handle it at receiving terminal simultaneously, and this is unfavorable to use in fields such as radio and television, military affairs.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of can the transmission arbitrary high code check audio/video data real time high-speed under band-limited network environment, and can play the audio/video content in real time at receiving terminal, can save as the audio/video data network transfer method of the audio/video file of required quality and form again simultaneously.
Technical scheme of the present invention is to adopt real-time frame transcoding technology, is to deliver to receiving terminal after unit absolute coding compression (being transcoding), the packing (generation packet) with the high code check audio/video data of intending transmission with the audio/video frame, and receiving terminal is that unit reduction, coding (being transcoding) back are formed audio/video stream played in order or be stored as the audio/video file with audio/video frame independently still with the packet that receives in real time.It repeats steps such as getting audio/video frame, issue end encoding compression, transmission, reception, receiving encoding, broadcast and storage in transmission course, up to the audio/video data end of transmission.Wherein:
1) get the audio/video frame: the central processing unit of data issue end will be prepared transmission from memory device high code check audio/video data begins to take out the single frames audio/video data successively from first frame, is transferred to the encoder of data issue end;
2) encoding compression: the encoder of data issue end is the audio/video data that is fit to the current network transmission code rate with the single frames audio/video data encoding compression of taking out, and the audio/video data of being issued after the central processing unit of holding will be encoded by data deposits in the network data transmission buffer of data transmission set the preparation transmission in;
3) transmission: data transmitter generates the packet of specifying size with the single frames audio/video data in the network data transmission buffer successively, is sent to data receiver by network communication protocol;
4) receive decoding: data sink is received the packet that sends, and deposits in the network data reception buffer; When the packet that receives in the buffer memory constitutes a complete frame audio/video data, the decoder of data receiver is complete single frames audio/video initial data with decoded packet data, send into the encoder of data receiver and encode, and the single frames audio/video initial data after will encoding deposits the data processing buffer in;
5) broadcast/storage: the data receiver central processing unit takes out the single frames audio/video data successively from the data processing buffer, forms audio/video stream frame by frame and plays by the audio/video data player; Also can form the audio/video stream file frame by frame and in the receiving terminal memory device, be stored as the audio/video file by the audio/video data that file creating apparatus will take out from the data processing buffer.
Wherein can be according to actual needs in the step (4), encode, change to different audio/video forms: encoder is encoded to single frames audio/video initial data and is used to the specified format single frames audio/video data playing or store, deposits receiving terminal data processing buffer successively in.This coding step can be encoded to different audio/video data forms as required simultaneously, is used for playing, storing.
Wherein said audio/video source comprises the audio/video data of storing in the data issue end memory device, the audio/video data of exporting, changes through A/D (mould/number) from the simulated audio signal of the analog video/sound collection equipment of picture pick-up device from videodisc player audio/video data.
The described audio/video frame of getting further comprises:
1) search and point to corresponding audio/video data frame: the corresponding audio file is opened and analyzed to the central processing unit of issue end from the memory device of issue end, obtains the index information of audio/video file from top of file.It has comprised the data original position of file format, file size, code check, the frame number of this audio/video data, every frame and data offset (being these frame data amounts) etc.; According to index file pointer is pointed to the data original position of frame of video/audio frame that needs read, the central processing unit of issue end is determined the audio/video data content frame that will get uniquely by it;
2) get this frame audio/video data: the central processing unit of issue end begins to extract corresponding frame audio/video data from current file pointer position, up to this frame end (determining according to the frame data offset information in the top of file index whether these frame data have been got);
3) judge whether these frame data have been got:, return 2 as not) continue to get this frame audio/video data; In this way, enter 4);
4) obtain the independent frame audio/video data;
5) the independent frame audio/video data is delivered to issue end encoder;
6) point to the next frame data, return 2) repeat, extract up to all audio/video data frame data and finish.
From the audio/video data of exporting in the videodisc player, from the simulated audio signal of the analog video/sound collection equipment of the picture pick-up device audio/video data through A/D (mould/number) conversion, the central processing unit of issue end directly therefrom extracts the audio/video data frame.
Described issue end encoding compression process is: use known audio/video encoding compression technology, issue end encoder carries out encoding compression to the independent frame audio/video data that obtains according to the control information (as code check, encoding compression form etc.) of artificial setting or default, and the central processing unit of data issue end deposits it transfer of data buffer of transmission equipment in.
Described transmitting step further comprises: data transmitter takes out the low code check audio/video data of single frames from the network data transmission buffer, and according to the control information of artificial setting or default, relatively this audio/video data amount and packet size generate a corresponding controlling packet and one or more packet.The generation method of controlling packet and packet is: if this frame audio/video data amount≤packet size then generates a controlling packet and packet and is used for transmission; If this frame audio/video＞packet size then generate a controlling packet, quantity of data packets rounds for (these frame data amount/packet size+1), by successively audio/video data being generated packet by packet size, last packet is generated (this data volume≤packet size) by remaining data; The data packet number and the size that comprise data amount information and this frame of composition of this frame in the controlling packet.Data transmitter is issued it according to network communication protocol by web-transporting device to receiving terminal.Carry out repeatedly with this.
Described receiving course is: data sink receives controlling packet and the packet that sends over according to network communication protocol, and put it into the network data reception buffer, the data receiver central processing unit extracts controlling packet information, detect the reception condition of packet, when detecting when this frame audio/video data bag being received, the data receiver central processing unit takes out the entire packet of this frame from the network data reception buffer, be decoded as complete single frames audio/video data and send into encoder.Carry out so repeatedly.
Described cataloged procedure is: use known audio/video coding techniques, encoder is encoded to the single frames audio/video data of receiving the single frames audio/video data of phase code rate and form by the control information of artificial setting or default, control information comprises audio/video code check, coded format and standard etc., and the single frames audio/video data behind the coding is received the end central processing unit and deposits the data processing buffer in.This process repeats.
Described playing process is: the receiving terminal central processing unit takes out the audio/video data of independent frame successively from audio/video data is handled buffer, by the technical standard of audio/video data coded format correspondence generate frame by frame audio/video stream at receiving terminal by the audio/video data player plays.
Described storing process is: the receiving terminal central processing unit is set up in the receiving terminal memory device and is intended storage audio/video file, and according to the coded format of independent frame audio/video data, adopts the corresponding codes technical standard to set up an audio/video sequence frame index.The receiving terminal central processing unit takes out the audio/video data of independent frame successively from the data processing buffer, the technical standard of pressing audio/video data coded format correspondence by file creating apparatus is revised the frame information in the sequence frame index, store this frame audio/video into set up file successively, form the audio/video stream file.
Beneficial effect of the present invention is:
1) owing to adopt real-time frame transcoding technology, the coding in the transmission course, transmission, reception, coding, broadcast and storing process are finished simultaneously, finished transmission with the shortest time under the condition that the network bandwidth allows, real-time Transmission has been realized in the time-saving and efficiency; Its audio/video data from the issue end obtains to meet the demands audio/video data required time T=T to receiving terminal
c(when audio/video data transmits, finish simultaneously at issue end and receiving terminal respectively, because the limited T of the network bandwidth
c〉=T
FyAnd T
Jb, T
cDepend on data quantity transmitted);
2) combine file download and Streaming Media and transmit both advantages, transmitted data amount is little, can synchronous playing can preserve in real time again;
3) audio/video data is to transmit for file unit with the frame when transmission, also only needs these frame data are retransmitted even occur mistake in the transmission, and does not need whole audio/video data is all retransmitted;
4) data issue end only needs to preserve the audio/video file of a high code check, receiving terminal is selected the real-time coding transmission of code rate mutually according to the needs of oneself with network condition during transmission, promptly save the storage resources of issue end, satisfied the different needs of data receiver again;
5) data receiver is in receiving course, the audio/video data that receives can be play and preserved according to the audio/video stream that oneself needs are encoded to phase code rate and form, and can save as the audio/video file of several different-formats and code check simultaneously.
Description of drawings
Fig. 1 is a system block diagram of the present invention.
Fig. 2 workflow diagram of the present invention.
Fig. 3 gets audio/video frame flow chart.
Fig. 4 transfer of data flow process figure.
Fig. 5 Data Receiving flow chart.
Embodiment
Below in conjunction with specific embodiment the present invention is described in further detail:
With reference to system block diagram of the present invention shown in Figure 1, the network transmission system of audio/video data comprises issue end CPU102, issue end encoder 103, data transmission set 104, data receiver 108, encoder 112, data processing buffer 113, receiving terminal CPU114, receiving terminal memory device 115, audio/video data player 116, file creating apparatus 117, and wherein data transmission set 104 comprises network data transmission buffer 105, data transmitter 106; Data receiver comprises data sink 109, network data reception buffer 110, decoder 111.
Refer again to flow chart of the present invention shown in Figure 2, in transmission course, repeat steps such as getting audio/video frame, issue end encoding compression (being transcoding), transmission, reception, receiving encoding (being transcoding), broadcast and storage, up to the audio/video data end of transmission.Wherein:
1) step 201, get the audio/video frame: the CPU102 of data issue end will prepare transmission from audio/video source 101 high code check audio/video data begins to take out the single frames audio/video data successively from first frame, delivers to data issue end encoder 103; This audio/video data can be any base band audio/video sequence, comprises the video of MPEG1, MPEG2, MPEG4, DV, WMV9 and PCM, MP2, MP3, WMA audio frequency.Change step 202 over to.
2) step 202, encoding compression: data issue end encoder 103 is suitable network 107 transmission code rate audio/video datas with the single frames audio/video data encoding compression of taking out, and the audio/video data of being issued after end CPU102 will encode by data deposits in the network data transmission buffer 105 of data transmission set 104 the preparation transmission in; This encoder comprises the video of MPEG1, MPEG2, MPEG4, DV, WMV9 and PCM, MP2, MP3, WMA audio coding compression function; Change step 203 over to.
3) step 203, transmission: data transmitter 106 generates the packet of specifying size with the low code check audio/video data of the single frames in the network data transmission buffer 105 successively, is sent to data receiver 108 by network communication protocol; Described communications protocol adopt the TCP/UDP agreement to transfer of data communication control.Change step 204 over to.
4) step 204, receive decoding: data sink 109 is received the packet that sends, and deposits in the network data reception buffer 110; When the packet that receives in the buffer memory constituted a complete frame audio/video data, the decoder 111 of data receiver 108 was complete single frames audio/video initial data with decoded packet data, sends into encoder 112; Can be provided with as required and change step 205 over to, or change step 206, step 207 over to.
5) step 205, coding: after encoder 112 is decoded as the audio/video base band data with single frames audio/video initial data, can be encoded to the single frames audio/video data of multiple different-format simultaneously, deposit the data processing buffer 113 of receiving terminal successively in; This coding can realize comprising the coding of the video of MPEG1, MPEG2, MPEG4, DV, WMV9 and PCM, MP2, MP3, WMA audio frequency.
6) step 206, play: receiving terminal CPU114 takes out the single frames audio/video data successively and forms audio/video stream frame by frame and play from video data initial gain value 113.
7) step 207, storage: will from video data initial gain value 113, take out the single frames audio/video data by file creating apparatus 117 and form the audio/video stream file frame by frame and in receiving terminal memory device 115, be stored as the audio/video file.
Described audio/video source 101 comprises the audio/video data of storing in the data issue end memory device, the audio/video data of exporting, the analog video signal from picture pick-up device output, the simulated audio signal of sound collection equipment and other simulation audio/videos of simulating the output of audio/video playback equipment carry out the A/D conversion through A/D (mould/number) transducer audio/video data from videodisc player.
In audio/video frame 201 processes of getting shown in Figure 3 be:
1) search and point to corresponding audio/video data frame 301: when the audio/video source was the memory device of issue end, the CPU102 of issue end opened and analyzes the corresponding audio file from audio/video source 101, obtain the index information of audio/video file from top of file.It has comprised the data original position of file format, file size, code check, the frame number of this audio/video data, every frame and data offset (being these frame data amounts) etc.; According to index file pointer is pointed to the data original position of frame of video/audio frame that needs read, the CPU102 of issue end determines the audio/video data content frame that will get uniquely by it.
2) get this frame audio/video data 302: the CPU102 of issue end begins to extract corresponding frame audio/video data from current file pointer position, up to this frame end (determining according to the frame data offset information in the top of file index whether these frame data have been got);
3) judge whether these frame data have got 303,, return 302 and continue to get this frame audio/video data as not; In this way, enter step 304.
4) obtain independent frame audio/video data 304;
5) the independent frame audio/video data is delivered to issue end encoder 305;
6) point to the next frame data, return 2) repeat, extract up to all audio/video data frame data and finish.
From the audio/video data of exporting in the videodisc player, from the simulated audio signal of the analog video/sound collection equipment of the picture pick-up device audio/video data through A/D (mould/number) conversion, the central processing unit of issue end directly therefrom extracts the audio/video data frame;
Adopt the video and PCM, MP2, MP3, the WMA audio coding that comprise MPEG1, MPEG2, MPEG4, DV, WMV9 to compress in issue end encoding compression 202 processes: the independent frame audio/video data of 103 pairs of acquisitions of issue end encoder carries out encoding compression according to the control information of artificial setting or default, control information is chosen with the network bandwidth and is adapted, the audio/video code check and the form of the quality of satisfying the demand, generate the single frames audio/video of phase code rate, data issue end CPU102 deposits it network data transmission buffer 105 of data transmission set 104 in.
According to transmission course shown in Figure 4 be: data transmitter 106 takes out the low code check audio/video data 401 of single frames from the network data transmission buffer, and according to the control information of artificial setting or default, this control information is according to information such as the network bandwidth and network quality setting data bag sizes.Enter step 402 then, whether data transmitter 106 judges this frame audio/video data amount≤packet size, in this way, enter that step 403 generates a controlling packet and a packet is used for transmission, as denying, then enter step 404 and generate a controlling packet and a plurality of controlling packet, quantity of data packets rounds for (these frame data amount/packet size+1), by successively audio/video data being generated packet by packet size, last data is surrounded by remaining data generates (this data volume≤packet size); Comprise the data amount information of this frame, the data packet number of forming this frame and size in the controlling packet.Entering step 405 data transmitter 106 then issues controlling packet, packet according to network communication protocol by network 107 to receiving equipment 108.Return step 401 then, carry out so repeatedly.
In DRP data reception process shown in Figure 5: step 501 data sink 109 receives controlling packet and the packet that sends over according to network communication protocol, and enter step 502, put it into network data reception buffer 110, enter step 503 again, data receiver CPU114 extracts controlling packet information, detects the reception condition of packet, enter step 504, judge whether these frame data bag receives,, return step 503 as not; In this way, enter step 505, receiving terminal CPU114 takes out the entire packet of this frame from network data reception buffer 110, be decoded as complete single frames audio/video data, enters step 506 then, and the independent frame audio/video data is sent into encoder 112.Begin to handle next frame then, return step 503, carry out so repeatedly.
Described coding 205 processes are: encoder 112 is encoded to the single frames audio/video data of receiving the single frames audio/video data of phase code rate and form by the control information of artificial setting or default, control information comprises audio/video code check, coded format and standard etc., and the single frames audio/video data behind the coding is received end CPU114 and deposits data processing buffer 113 in.This process repeats.
Described playing process is: receiving terminal CPU114 takes out the audio/video data of independent frame successively from data processing buffer 113, generates audio/video stream frame by frame by the technical standard of audio/video data coded format correspondence and plays on the audio/video data player 116 of receiving terminal.
Described storing process is: receiving terminal CPU114 sets up in receiving terminal memory device 115 and intends storage audio/video file, and according to the coded format of independent frame audio/video data, adopt for the coding techniques standard set up an audio/video sequence frame index.Receiving terminal CPU114 takes out the audio/video data of independent frame successively from data processing buffer 110, the technical standard of pressing audio/video data coded format correspondence by file creating apparatus 117 is revised the frame information in the sequence frame index, store this frame audio/video into set up file successively, form the audio/video stream file.
Can realize that by this coding step the audio/video data form of playing and storing is inequality, also code storage is the audio/video file of several different-formats simultaneously.
Claims (12)
1. the network transfer method of an audio/video data, this method comprises the following steps:
(1) get the audio/video frame: the central processing unit of data issue end will be prepared transmission from the audio/video source high code check audio/video data begins to take out the single frames audio/video data successively from first frame, delivers to the encoder of data issue end;
(2) encoding compression: it is the audio/video data that is fit to the current network transmission code rate with the single frames audio/video data encoding compression of taking out that data are issued the encoder of holding, and the audio/video data of being issued after the central processing unit of holding will be encoded by data deposits in the network data transmission buffer of data transmission set;
(3) transmission: data transmitter generates the packet of specifying size with the single frames audio/video data in the network data transmission buffer successively, is sent to data receiver by network communication protocol;
(4) receive decoding: data sink is received the packet that sends, and deposits in the network data reception buffer; When the packet that receives in the buffer memory constitutes a complete frame audio/video data, the decoder of data receiver is complete single frames audio/video initial data with decoded packet data, send into the encoder of data receiver and encode, and the single frames audio/video initial data after will encoding deposits the data processing buffer in;
(5) broadcast/storage: the data receiver central processing unit takes out the single frames audio/video data successively from the data processing buffer, forms audio/video stream frame by frame and plays by the audio/video data player; The audio/video data that will take out from the data processing buffer by file creating apparatus is formed the audio/video stream file frame by frame and be stored as the audio/video file in the receiving terminal memory device simultaneously;
Receive up to the audio/video data transmission.
2. the network transfer method of audio/video data as claimed in claim 1, it is characterized in that: encode after step (4): the encoder of data receiver is encoded to single frames audio/video initial data respectively and is used to the specified format single frames audio/video data playing or store, deposits receiving terminal data processing buffer successively in.
3, the network transfer method of audio/video data as claimed in claim 2 is characterized in that: the coding step that carries out after the described step (4) can be encoded to different forms simultaneously with audio/video data and play or store.
4, the network transfer method of audio/video data as claimed in claim 1 is characterized in that: described audio/video source comprises the audio/video data of storing in the data issue end memory device, the audio/video data of exporting and from the simulated audio signal of the analog video/sound collection equipment of the picture pick-up device audio/video data through mould/number conversion from videodisc player.
5, the network transfer method of audio/video data as claimed in claim 1, it is characterized in that: described transmitting step further comprises: data transmitter takes out the single frames audio/video data from the network data transmission buffer, according to control information, relatively this audio/video data amount and packet size generate a corresponding controlling packet and one or more packet.
6, the network transfer method of audio/video data as claimed in claim 5, it is characterized in that: the generation method of described controlling packet and packet is: if this frame audio/video data amount≤packet size then generates a controlling packet and packet and is used for transmission; If this frame audio/video data amount＞packet size then generate a controlling packet, quantity of data packets is
After value round, by successively audio/video data being generated packet by packet size, last packet is generated by remaining data; The data packet number and the size that comprise data amount information and this frame of composition of this frame in the controlling packet; Data transmitter is issued it according to network communication protocol by web-transporting device to receiving terminal.
7. the network transfer method of an audio/video data, this method comprises the following steps:
(1) get the audio/video frame: the central processing unit of data issue end will be prepared transmission from the audio/video source high code check audio/video data begins to take out the single frames audio/video data successively from first frame, delivers to the encoder of data issue end;
(2) encoding compression: it is the audio/video data that is fit to the current network transmission code rate with the single frames audio/video data encoding compression of taking out that data are issued the encoder of holding, and the audio/video data of being issued after the central processing unit of holding will be encoded by data deposits in the network data transmission buffer of data transmission set;
(3) transmission: data transmitter generates the packet of specifying size with the single frames audio/video data in the network data transmission buffer successively, is sent to data receiver by network communication protocol;
(4) receive decoding: data sink is received the packet that sends, and deposits in the network data reception buffer; When the packet that receives in the buffer memory constitutes a complete frame audio/video data, the decoder of data receiver is complete single frames audio/video initial data with decoded packet data, send into the encoder of data receiver and encode, and the single frames audio/video initial data after will encoding deposits the data processing buffer in;
(5) broadcast/storage: the data receiver central processing unit takes out the single frames audio/video data successively from the data processing buffer, forms audio/video stream frame by frame and plays by the audio/video data player; Or form the audio/video stream file frame by frame and in the receiving terminal memory device, be stored as the audio/video file by the audio/video data that file creating apparatus will take out from the data processing buffer;
Receive up to the audio/video data transmission.
8. the network transfer method of audio/video data as claimed in claim 7, it is characterized in that: encode after step (4): the encoder of data receiver is encoded to single frames audio/video initial data respectively and is used to the specified format single frames audio/video data playing or store, deposits receiving terminal data processing buffer successively in.
9, the network transfer method of audio/video data as claimed in claim 8 is characterized in that: the coding step that carries out after the described step (4) can be encoded to different forms simultaneously with audio/video data and play or store.
10, the network transfer method of audio/video data as claimed in claim 7 is characterized in that: described audio/video source comprises the audio/video data of storing in the data issue end memory device, the audio/video data of exporting and from the simulated audio signal of the analog video/sound collection equipment of the picture pick-up device audio/video data through mould/number conversion from videodisc player.
11, the network transfer method of audio/video data as claimed in claim 7, it is characterized in that: described transmitting step further comprises: data transmitter takes out the single frames audio/video data from the network data transmission buffer, according to control information, relatively this audio/video data amount and packet size generate a corresponding controlling packet and one or more packet.
12, the network transfer method of audio/video data as claimed in claim 11, it is characterized in that: the generation method of described controlling packet and packet is: if this frame audio/video data amount≤packet size then generates a controlling packet and packet and is used for transmission; If this frame audio/video data amount＞packet size then generate a controlling packet, quantity of data packets is
After value round, by successively audio/video data being generated packet by packet size, last packet is generated by remaining data; The data packet number and the size that comprise data amount information and this frame of composition of this frame in the controlling packet; Data transmitter is issued it according to network communication protocol by web-transporting device to receiving terminal.
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Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101695090B (en) * | 2009-10-20 | 2014-06-11 | 中兴通讯股份有限公司 | Method for realizing real-time sharing of audio and video of mobile terminal and mobile terminal |
| CN101714956B (en) * | 2009-10-29 | 2015-08-05 | 北京中星微电子有限公司 | A kind of virtual video system, video file long-range sharing system and method |
| CN102547382A (en) * | 2010-12-14 | 2012-07-04 | 腾讯科技（深圳）有限公司 | Method and device for providing video files for format-limited video-playing terminals |
| CN102547375A (en) * | 2010-12-23 | 2012-07-04 | 上海讯垒网络科技有限公司 | Transmission method for quickly previewing H.264 coded picture |
| CN102088622A (en) * | 2011-01-13 | 2011-06-08 | 成都索贝数码科技股份有限公司 | Multimedia information processing terminal |
| US8489760B2 (en) * | 2011-03-31 | 2013-07-16 | Juniper Networks, Inc. | Media file storage format and adaptive delivery system |
| CN102789804B (en) * | 2011-05-17 | 2016-03-02 | 华为软件技术有限公司 | Video broadcasting method, player, monitor supervision platform and audio/video player system |
| WO2012163059A1 (en) * | 2011-11-21 | 2012-12-06 | 华为技术有限公司 | Method, device and system for device redirection data transmission |
| CN102892038B (en) * | 2012-09-28 | 2016-02-10 | 歌尔声学股份有限公司 | Television multimedia assists interactive system and television interaction method |
| CN102932675B (en) * | 2012-10-09 | 2015-04-29 | 成都索贝数码科技股份有限公司 | Internet-based digital content collecting system |
| CN103546455A (en) * | 2013-09-16 | 2014-01-29 | 北京电视台 | Transmission link scheduling method and system |
| CN105979284B (en) * | 2016-05-10 | 2019-07-19 | 杨�远 | Mobile terminal video sharing method |
| CN106454365B (en) * | 2016-11-22 | 2018-07-10 | 包磊 | Coding, coding/decoding method and the coding of multi-medium data, decoding apparatus |
| CN107707921B (en) * | 2017-07-14 | 2020-05-19 | 湖北航天技术研究院总体设计所 | Dynamic image processing system |
| CN107958036B (en) * | 2017-11-20 | 2020-09-11 | 广州小鹏汽车科技有限公司 | Music playing method, system and device while caching |
| CN109525861A (en) * | 2018-12-05 | 2019-03-26 | 北京邮电大学 | A kind of method and device of video needed for determining user |
| CN110197447B (en) * | 2019-04-17 | 2022-09-30 | 哈尔滨沥海佳源科技发展有限公司 | Communication index based online education method and device, electronic equipment and storage medium |
| CN112437263A (en) * | 2020-11-12 | 2021-03-02 | 成都麦赛科技有限公司 | Video plug flow method and system |
| CN112671921A (en) * | 2020-12-29 | 2021-04-16 | 平安普惠企业管理有限公司 | Data transmission method and device, electronic equipment and readable storage medium |
-
2006
- 2006-01-24 CN CN 200610001840 patent/CN100568966C/en active Active
Non-Patent Citations (4)
| Title |
|---|
| CN1558679A 2004.12.29 |
| WO2005043922A1 2005.05.12 |
| 互联网中实时流媒体播放技术的研究. 高科.电子科技大学硕士论文. 2005 |
| 互联网中实时流媒体播放技术的研究. 高科.电子科技大学硕士论文. 2005 * |
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