CN1784006A - Transmission method for video encoding signal - Google Patents
Transmission method for video encoding signal Download PDFInfo
- Publication number
- CN1784006A CN1784006A CN 200410091690 CN200410091690A CN1784006A CN 1784006 A CN1784006 A CN 1784006A CN 200410091690 CN200410091690 CN 200410091690 CN 200410091690 A CN200410091690 A CN 200410091690A CN 1784006 A CN1784006 A CN 1784006A
- Authority
- CN
- China
- Prior art keywords
- code stream
- transmission channel
- different
- frame
- different characteristic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
This invention discloses a method for transmitting video coding signal to adopt different transmission channel for different characteristic video coding signal code stream. Said method includes coding video signal by source encoder, the sender separating coded signal according to different character of video coding signal code stream, the separated code stream transmitted in different transmission channel, receiver merging code stream according to coding signal sequence before transmission, imputing in source encoder for decoding and then transmitting. Said invention reduces the bit rate change in transmission channel.
Description
Technical field
The present invention relates to the video information process technology, refer to a kind of transmission method of encoded video especially.
Background technology
Typical communication system is made up of transmitting end, source encoder, channel encoder, modulator-demodulator, channel decoder, source decoder and collection of letters end.
Transmitting end generally comprises forms such as voice, video, data.Video will occupy more and more important position as very special a kind of information in the communication system in future, these application of visual telephone, video conference and Streaming Media all comprise a large amount of video informations.
A video traffic transmission course is achieved in that through the coded video information code stream after the source encoding and passes to source decoder by transmission system, gives the end of collecting mail after the decoding and finishes communication.Transmission system can be line transmission system or wireless transmitting system or their combination, for each video traffic, transmission system can provide the transmission channel of a point-to-point, utilize technical transmission channels such as chnnel coding, modulation can guarantee certain transmission service quality (QoS), make code stream after the source encoding through can be behind the transmission channel by the correct decoding of source decoder.
Because the raw information amount of video information is very big, if do not carry out effective compressed encoding, is difficult in the communication system and propagates.Video coding standard commonly used comprises Motion Picture Experts Group (MPEG)-1, MPEG-2, MPEG-4 and ITU-TH.263 series, and up-to-date video coding standard advanced video coding (AVC) H.264/.
The basic thought of at present popular video coding standard is: the hybrid coding of the inter prediction encoding of employing compression time redundant information and the intraframe coding combination of compression stroke redundant information.Generally be divided into following components through the code stream behind the source encoder:
1) adopts the code stream part of intraframe coding, as the I slice in the coding criterion H.264, hereinafter to be referred as the I frame;
2) adopt the code stream part of inter prediction encoding, as the P slice in the coding criterion H.264, hereinafter to be referred as the P frame.
Based on above-mentioned two kinds of frames, two kinds of frames with different characteristic of I frame and P frame are just arranged, in the code stream behind the common coding as H.264 coding criterion is following: IPPPPIPPPPIPPPP.Here different characteristic is meant different sizes, different quality etc.
Wherein the I frame is owing to adopt intraframe coding, and the frame before not having to adopt is as the reference frame, and compression ratio is little, and corresponding code block is bigger; Frame before the P frame adopts carries out inter prediction as the reference frame, and compression ratio is very high, so code block is less.In coding criterion H.264, because the I frame is as the reference frame of follow-up P frame, if the I frame passes and wrongly can cause continuous mistake, so the I frame is more much higher than P frame to the requirement of transmission channel quality.
At present, video information is transmitted by same transmission channel through code stream after the source encoding, such as for adopting the H.264 situation of coding criterion, huge I frame and less P frame transmit on same transmission channel, as: IPPPPIPPPPIPPPP can cause the bit rate fluctuations on the transmission channel very big.
Fig. 1 is the transmission principle schematic diagram of prior art encoded video, supposes that H.264 vision signal adopts coding criterion to encode, and the encoded video code stream is made up of I frame and P frame, and coded sequence is IPPPPIPPPP.Through behind the source encoder, transmit leg requires standard to send transmission channel n of signaling request to the recipient with the I frame to propagation channel quality, comprise in the signaling I frame to channel width, guarantee the tactful isoparametric requirement of channel QoS, obtain can setting up this transmission channel n after recipient's the affirmation signaling.Code stream is loaded into transmission channel n according to the coding sequencing and goes up transmission then; After importing source decoder decodes with code stream, the recipient exports.
From the transmission method of prior art encoded video as can be seen, because the I frame adopts intraframe coding, the P frame adopts inter prediction encoding, the I frame on data volume greater than the P frame, and the shared transmission channel n of I frame and P frame transmits code stream, has so just caused the bit rate on the transmission channel n to change.In addition, because the fixing QoS that same transmission channel adopts guarantees strategy, in order to guarantee crucial I frame transmission quality, transmission channel can adopt some QATs, as chnnel coding, Forward Error Correction (FEC) etc.And for the lower P frame of transmission quality requirements, these technical measures of taking guaranteeing transmission channel quality have caused the wasting of resources of transmission channel.
As seen, the code stream of different characteristic transmits on same transmission channel, causes the bit rate of transmission channel to change greatly, is unfavorable for design and the management of system to transmission channel, thereby cause the level of resources utilization of transmission channel not high, the code stream that particularly a large amount of P frames exist.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of transmission method of encoded video, and the bit rate that this method can reduce transmission channel changes, and can make full use of transmission channel resources simultaneously.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
A kind of transmission method of encoded video is characterized in that, this method may further comprise the steps:
A. according to the different characteristic through code stream in the encoded video of video signal coding one-tenth, the transmission channel that the transmit leg request is different;
B. the code stream with different characteristic in the encoded video separates, and transmits on the different characteristic code stream corresponding transmission channel that is loaded in the steps A respectively to be asked of the different characteristic code stream after will separating;
C. the recipient will merge from the code stream of different transmission channels, and the code stream after will merging is decoded.
The transmission channel that the steps A described request is different is specially: transmit leg is asked different transmission channel to the requirement of transmission channel bandwidth, assurance transmission channel quality strategy to the recipient according to the different characteristic code stream.
The described separation of step B is to carry out code stream according to the type code information of different code streams frame head to separate.
In the steps A video signal coding is become after the encoded video, this method further comprises: video encoder carries out serial number to encoded video.
The described merging of step C is to merge according to the code stream serial number information before sending.
The code stream of different characteristic described in the steps A is that different sizes are or/and the frame of different quality.
Described transmission channel is the combination of wire transmission channel or wireless transmission channel or wire transmission channel and wireless transmission channel.
The code stream of described different characteristic is I frame and/or the P frame in the coding criterion H.264.
As seen from the above technical solution, method of the present invention is the feature according to video coding rear video signal code stream, uses different transmission channels to transmit respectively to the code stream of different characteristic.That is: transmit leg separates the code stream of different characteristic before transmission, and asks different transmission channels to the recipient, and the different code streams after will separating is then passed through different transmission channel respectively; The recipient, after will merging according to the order before sending from the code stream of different transmission channels, output after the input source decoder is decoded.This method has guaranteed the appropriate design of different channels transmission quality, thereby has improved the utilization of resources to transmission channel because the transmission channel different to the code streams by using of different characteristic reduced the bit rate variation of transmission channel.
Description of drawings
Fig. 1 is the transmission principle schematic diagram of prior art encoded video;
Fig. 2 is the transmission principle schematic diagram of encoded video of the present invention;
Fig. 3 is the transmission method flow chart of encoded video of the present invention.
Embodiment
Core concept of the present invention is: after vision signal is through the source encoder coding, feature according to the encoded video code stream, transmit leg is separated the code stream of different characteristic, different code streams transmits by different transmission channels, the recipient, export after will decoding according to the order merging back input source decoder of the preceding encoded video of transmission from the code stream of different transmission channels.
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing preferred embodiment that develops simultaneously, the present invention is described in more detail.
Fig. 2 is the transmission principle schematic diagram of encoded video of the present invention, adopt H.264 coding criterion to encode with vision signal, and the encoded video code stream consists of example by I frame and P frame.In the present embodiment, the encoding process pattern that source encoder and source decoder both sides consult is IPPPPIPPPP, and four P frames of one of them I frame band are called one group, and I frame and P frame all have serial number respectively, such as: the I frame number is 5n, n=0 wherein, 1,2..., n represents the group # of code stream, and the P frame number is respectively so: 5n+1,5n+2,5n+3,5n+4.For coded message IPPPPIPPPP, be divided into two groups, group # is respectively n=0 and n=1, and corresponding code stream serial number is successively: 0,1,2,3,4,5,6,7,8,9, the serial number of these corresponding code streams is stored in the code stream frame head.In conjunction with the transmission method flow chart of Fig. 3 encoded video of the present invention, concrete job step is as follows:
Step 300: according to the different qualities of code stream, the sending direction recipient sends the different transmission channel of signaling request.
In this step, transmit leg requires standard to require standard to send two different transmission channels of signaling request to the recipient with the P frame to propagation channel quality with the I frame to propagation channel quality respectively, that is: the transmission channel p that is used to transmit the transmission channel i of I frame and is used to transmit the P frame.
Comprise in the signaling information transmission channel i of I frame requirement bandwidth, guarantee the parameters such as strategy of the QoS of transmission channel i, and the bandwidth of the transmission channel p that requires of P frame, guarantee the parameters such as strategy of the QoS of transmission channel p.In recipient's request of receiving and after transmit leg is replied the affirmation signaling, just obtain two different transmission channels, i.e. transmission channel i and transmission channel p.
Specifically, such as in Wideband Code Division Multiple Access (WCDMA) (WCDMA) system, the radio bearer of wireless access network (RAN) (Radio Bearer) is the transmission channel of signaling and data.During transmit leg request channel, Radio Resource control (RRC) is set up radio bearer to the request of recipient's RRC module, after recipient's RRC receives request, if agree to insert, then returns the message that radio bearer is set up.
Here, the type code of code stream frame head is used to discern the code stream of different characteristic, as the I frame its type code of sign is arranged, and the P frame has its type identification of sign, so that transmit leg and recipient differentiate I frame and P frame.
In this step, transmit leg is according to the code stream of these two kinds of different characteristics of type code information separated of code stream I frame and P frame frame head, serial number is that 0 and 5 I frame sequential is loaded into transmission channel i and goes up transmission in the present embodiment, and serial number is respectively 1,2,3,4,6,7,8,9 P frame sequential is loaded into transmission channel p and goes up transmission.
Specifically, such as in Wideband Code Division Multiple Access (WCDMA) (WCDMA) system, it is that user plane protocol by the Iu interface of RAN and core net (CN) is finished that the code stream of different characteristic separates, and then the code stream correspondence of different characteristic is loaded on the radio bearer of setting up in the WCDMA system in the step 300 transmits.
Step 303: the recipient, will merge according to the coded sequence information before sending, and export after importing source decoder decodes then from the code stream of different transmission channels.
In this step, the recipient receives the code stream from different transmission channels, the code stream that separates is reconfigured with the encoding process pattern that the source decoder both sides consult according to source encoder then, that is,, will have 0 from what transmission channel i and transmission channel p transmitted respectively according to the form of 4 P frames of an I frame band, 1,2,3,4,5,6,7, the I frame of 8,9 order labels and the coded message that the P frame is combined into IPPPPIPPPP.
RAN part in Wideband Code Division Multiple Access (WCDMA) (WCDMA) system, the recipient also is the merging of being finished the different characteristic code stream by the user plane protocol of the Iu interface of RAN and CN.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (8)
1. the transmission method of an encoded video is characterized in that, this method may further comprise the steps:
A. according to the different characteristic through code stream in the encoded video of video signal coding one-tenth, the transmission channel that the transmit leg request is different;
B. the code stream with different characteristic in the encoded video separates, and transmits on the different characteristic code stream corresponding transmission channel that is loaded in the steps A respectively to be asked of the different characteristic code stream after will separating;
C. the recipient will merge from the code stream of different transmission channels, and the code stream after will merging is decoded.
2. method according to claim 1, it is characterized in that the transmission channel that the steps A described request is different is specially: transmit leg is asked different transmission channel to the requirement of transmission channel bandwidth, assurance transmission channel quality strategy to the recipient according to the different characteristic code stream.
3. method according to claim 1 is characterized in that, the described separation of step B is to carry out code stream according to the type code information of different code streams frame head to separate.
4. method according to claim 1 is characterized in that, in the steps A video signal coding is become after the encoded video, and this method further comprises: video encoder carries out serial number to encoded video.
5. method according to claim 4 is characterized in that, the described merging of step C is to merge according to the code stream serial number information before sending.
6. method according to claim 1 is characterized in that, the code stream of different characteristic described in the steps A is that different sizes are or/and the frame of different quality.
7. method according to claim 1 is characterized in that, described transmission channel is the combination of wire transmission channel or wireless transmission channel or wire transmission channel and wireless transmission channel.
8. method according to claim 1 is characterized in that, the code stream of described different characteristic is I frame and/or the P frame in the coding criterion H.264.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100916902A CN100455016C (en) | 2004-11-30 | 2004-11-30 | Transmission method for video encoding signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100916902A CN100455016C (en) | 2004-11-30 | 2004-11-30 | Transmission method for video encoding signal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1784006A true CN1784006A (en) | 2006-06-07 |
| CN100455016C CN100455016C (en) | 2009-01-21 |
Family
ID=36773684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100916902A Active CN100455016C (en) | 2004-11-30 | 2004-11-30 | Transmission method for video encoding signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100455016C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8350890B2 (en) | 2006-11-24 | 2013-01-08 | Lenovo (Beijing) Limited | Method and apparatus of wireless video transceiving based on multi-carrier technique |
| CN102970524A (en) * | 2011-09-01 | 2013-03-13 | 华为技术有限公司 | Video transmission method, device and system in wireless network |
| CN108449338A (en) * | 2018-03-16 | 2018-08-24 | 中影数字巨幕（北京）有限公司 | A kind of cinematic data processing method and processing device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1131618C (en) * | 2001-01-18 | 2003-12-17 | 清华大学 | Anti-attenuation method based on code flow rearrangement in wireless multimedia communication |
| CA2393373A1 (en) * | 2002-07-15 | 2004-01-15 | Anthony Gerkis | Apparatus, system and method for the transmission of data with different qos attributes. |
| CN1228974C (en) * | 2003-01-09 | 2005-11-23 | 北京泰美世纪科技有限公司 | Transferring ssytem of signal communication in digital multimedia broadcast system and mode |
-
2004
- 2004-11-30 CN CNB2004100916902A patent/CN100455016C/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8350890B2 (en) | 2006-11-24 | 2013-01-08 | Lenovo (Beijing) Limited | Method and apparatus of wireless video transceiving based on multi-carrier technique |
| CN102970524A (en) * | 2011-09-01 | 2013-03-13 | 华为技术有限公司 | Video transmission method, device and system in wireless network |
| CN102970524B (en) * | 2011-09-01 | 2016-06-22 | 华为技术有限公司 | Video transmission method, equipment and system in wireless network |
| CN108449338A (en) * | 2018-03-16 | 2018-08-24 | 中影数字巨幕（北京）有限公司 | A kind of cinematic data processing method and processing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100455016C (en) | 2009-01-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1288915C (en) | Grouping of image frames in video coding | |
| US6920179B1 (en) | Method and apparatus for video transmission over a heterogeneous network using progressive video coding | |
| CN1123978C (en) | Picture coder, picture decoder, and picture transmission system | |
| CN1283105C (en) | Method and system for control of bit rate based on object | |
| Vukobratovic et al. | Scalable video multicast using expanding window fountain codes | |
| CN1168217C (en) | Variable length coded data transmission device | |
| CN1164082C (en) | Radio communication system using for video group transmission | |
| KR101380505B1 (en) | Method for determining protection and compression parameters for the transmission of multimedia data over a wireless channel | |
| CN1625880A (en) | Streaming multimedia data over a network having a variable bandwith | |
| CN1910926A (en) | Method and apparatus for handling video communication errors | |
| CN1361991A (en) | Video coding | |
| CN1993996A (en) | Method, apparatus, and system for enhancing robustness of predictive video codecs using a side-channel based on distributed source coding techniques | |
| CN1723710A (en) | Be used for system and the system that is used for video data decoding to video data encoding | |
| CN1894973A (en) | Scalable encoding for multicast broadcast multimedia service | |
| CN107995493B (en) | Multi-description video coding method of panoramic video | |
| CN1943241A (en) | Device and method for receiving video data | |
| CN1822678A (en) | Grouping of image frames in video coding | |
| CN1717047A (en) | Data streaming file, method and system for moving data streaming service | |
| CN1112811C (en) | Method for decoding video data damaged by channel noise | |
| CN101742289B (en) | Method, system and device for compressing video code stream | |
| CN1611027A (en) | Unequal error protection using forward error correction based on reed-Solomon codes | |
| CN1968119A (en) | Method for resource sharing among MCUs in videoconference system | |
| CN108429921A (en) | A kind of video coding-decoding method and device | |
| CN1784006A (en) | Transmission method for video encoding signal | |
| CN1798342A (en) | Method for converting coding of video image in conversion equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200611 Address after: 518000 Baoan District Xin'an street, Shenzhen, Guangdong, No. 625, No. 625, Nuo platinum Plaza, Patentee after: SHENZHEN SHANGGE INTELLECTUAL PROPERTY SERVICE Co.,Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. Effective date of registration: 20200611 Address after: 401420 A District, Chongqing Qijiang District, South Street Bridge River Industrial Park Patentee after: Meiai (Chongqing) Technology Development Co.,Ltd. Address before: 518000 Baoan District Xin'an street, Shenzhen, Guangdong, No. 625, No. 625, Nuo platinum Plaza, Patentee before: SHENZHEN SHANGGE INTELLECTUAL PROPERTY SERVICE Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201113 Address after: Group 10, Sanmiao village, Xingren Town, Tongzhou District, Nantong City, Jiangsu Province, 226000 Patentee after: Nantong leituo Electronic Co.,Ltd. Address before: 401420 A District, Chongqing Qijiang District, South Street Bridge River Industrial Park Patentee before: Meiai (Chongqing) Technology Development Co.,Ltd. |