CN101692711A - Method for encoding and decoding video, system and video monitoring system - Google Patents
Method for encoding and decoding video, system and video monitoring system Download PDFInfo
- Publication number
- CN101692711A CN101692711A CN 200910190176 CN200910190176A CN101692711A CN 101692711 A CN101692711 A CN 101692711A CN 200910190176 CN200910190176 CN 200910190176 CN 200910190176 A CN200910190176 A CN 200910190176A CN 101692711 A CN101692711 A CN 101692711A
- Authority
- CN
- China
- Prior art keywords
- frame
- stream group
- code stream
- decoding
- frame section
- 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.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
- H04N19/172—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a picture, frame or field
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
- H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
The invention discloses a method for encoding and decoding a video, a system and a video monitoring system. The method comprises the following steps: decomposing a continuous video into at least one frame segment by an encoding end, and extracting data frames from the frame segment to form a sub-code stream group according to a time sequence; encoding a first frame of the sub-code stream group in an I-frame mode; forming a code stream group by using the encoded sub-code stream group according to the time sequence; and acquiring the code stream group by an decoding end, and sequentially decoding the data frames contained in the code stream group. The method for encoding and decoding the video, the system and the video monitoring system are suitable for various network environments and equipment characteristics, and significantly improve the video playing effect.
Description
Technical field
The present invention relates to multimedia technology field, relate in particular to a kind of video coding-decoding method, system and a kind of video monitoring system.
Background technology
The coded system of video generally includes I frame, P frame and B frame, and wherein, the I frame is self-reference frame (also claiming intracoded frame), and promptly the coding of I frame is not with reference to other Frame, and correspondingly, it can not rely on the data of other frame and realize independent decoding; The P frame is unidirectional reference frame, and promptly the coding of P frame need be with reference to sequential a frame or a few frame the preceding, and correspondingly, it need rely on a frame of front or the decoded data of several frames is decoded; The B frame is two-way reference frame, promptly the coding of B frame need with reference to sequential preceding and after Frame, correspondingly, it need rely on the decoded data of front and back and decode.Generally, consider video code flow transmission continuity and real-time, in order to reduce time-delay, the real-time video Play System only adopts the common coded system of I and P frame usually, in order further to prevent loss of data, the I frame coding mode of preferred cycle promptly equally spaced is provided with the I frame in the code stream, a plurality of P frames are set after each I frame.Yet, under a lot of situations, video code flow need transmit between coding side and decoding end by different communication modes usually, therefore the factors such as performance of communication modes, the network bandwidth, network condition and terminal equipment will inevitably influence code stream transmission quality and decoding quality, if lose in the code stream transmission course or damaged one or more I frames, then a plurality of P frames thereafter all can't be realized smooth decoding, thereby have influenced the display effect of video.
In the video monitoring system for example shown in Figure 1, camera, The Cloud Terrace etc. are installed in the coding video data of front end watch-dog to collecting in monitoring place, and code stream is forwarded to each client by streaming server, different clients can adopt different terminal equipments such as mobile phone, desktop computer, notebook computer, different clients also can be subjected to the restriction of different network environments when streaming server obtains code stream.For example some client is by Ethernet access service at a high speed, the client that has is by medium speed's modulation adjuster access service, also have some users can only pass through the infinite network access service of low speed due to limited conditions, these different access waies have caused the different network bandwidths, even client is used with a kind of access way, also might be in the different time because different network conditions causes the different network bandwidths, therefore, video code flow with constant frame per second is under the bigger situation of network bandwidth fluctuation, may cause video data loss or time-delay, for example video decode the time, usually all can begin to carry out the order decoding from the I frame, if any one I LOF or destroyed then may influence the decoding of all P frames of back.Also the equipment performance of some client is relatively poor, code stream handle and display capabilities relatively poor, so client is when displaying video, realistic problem such as may occur delaying time serious, colored screen, mosaic and can't reach the result of broadcast of clear and smooth.Therefore, existing coding and decoding video mode can not adapt to the equipment of multiple network environment and terminal, is difficult to satisfy user's actual demand.
Summary of the invention
Technical problem to be solved by this invention is that a kind of multiple network environment or equipment performance, the video coding-decoding method that improves video playing quality, system and a kind of video monitoring system of adapting to is provided.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of video coding-decoding method is characterized in that, coding side resolves at least one frame section with continuous video, extracts Frame and form the subcode stream group in chronological order from described frame section;
First frame to described subcode stream group is encoded in the mode of I frame;
Subcode stream group behind the described coding is formed the code stream group according to time sequencing;
Decoding end is obtained described code stream group, and the Frame that described code stream group is comprised is carried out the order decoding.
It is reference that coding side adopts first frame to other Frames in the described subcode stream group, encodes in the mode of P frame.
Preferably, when from described frame section, extracting Frame, must extract first frame of described frame section.
Coding side with the method that continuous video resolves at least one frame section is: coding side resolves into continuous video and joins end to end, comprises the frame section that equates frame number;
Coding side extracts Frame from described frame section method is: coding side equally spaced extracts Frame from described frame section.
Coding side extracts Frame from described frame section method is: coding side extracts at least Frame from described frame section, and each Frame that extracts forms a code stream group;
The method that subcode stream group behind the described coding is formed the code stream group according to time sequencing is: select the subcode stream group of all frame section correspondences and it is formed a code stream group, obtain at least one code stream group after repeatedly selecting;
The mode that decoding end is obtained described code stream group is: decoding end is according to concrete at least one code stream group of acquisition request.
Preferably, decoding end is provided with a time-delay threshold values, and described decoding end is obtained at least one data set according to the relationship request between real-time delay value and the time-delay threshold values from decoding end.
The mode that the Frame that decoding end is comprised described code stream group carries out the order decoding is: the Frame that decoding end is comprised part or all of subcode stream group in the described code stream group carries out the order decoding.
In a kind of execution mode, the number that each frame section comprises Frame is an odd number, extracts first frame of first frame of each frame section as each subcode stream group of correspondence;
Extract first frame odd-numbered frame in addition from described frame Duan Zhongzai and also form odd number subcode stream group in chronological order, extract first frame even frame in addition from described frame Duan Zhongzai and also form even number subcode stream group in chronological order;
Described odd number subcode stream group is formed odd number code stream group according to time sequencing, described even number subcode stream group is formed even number code stream group according to time sequencing;
Concrete acquisition request odd number code stream group of decoding end basis and/or even number code stream group, and the Frame in described odd number code stream group and/or the even number code stream group is carried out order decode.
Described each frame section comprises 25 continuous Frames, and each frame section time corresponding is 1 second.
A kind of video coding and decoding system comprises coding side and decoding end, and described coding side comprises frame section decomposing module and block encoding module, and described decoding end comprises code stream acquisition module and packet decoding module;
Frame section decomposing module is used for continuous video is resolved at least one frame section;
The block encoding module is used for from described frame section extraction Frame and after forming the subcode stream group in chronological order, first frame of described subcode stream group is encoded in the mode of I frame, also is used for the subcode stream group behind the described coding is formed the code stream group according to time sequencing;
The code stream acquisition module is used for obtaining described code stream group from described coding side, and sends it to the packet decoding module;
The packet decoding module is used for the Frame that described code stream group is comprised is carried out the order decoding.
A kind of video monitoring system comprises the front end watch-dog, streaming server and at least one client, and described front end watch-dog is provided with coding side, and described coding side comprises frame section decomposing module and block encoding module; Described each client is provided with decoding end, and described decoding end comprises code stream acquisition module and packet decoding module;
Frame section decomposing module is used for the continuous video of described front end watch-dog collection is resolved at least one frame section;
After the block encoding module is used for extracting Frame and forming the subcode stream group in chronological order from described frame section, first frame to described subcode stream group is encoded in the mode of I frame, after also being used for the subcode stream group behind the described coding formed the code stream group according to time sequencing, described code stream group is offered described streaming server;
The code stream acquisition module is used for obtaining described code stream group by communication network from described streaming server;
The packet decoding module is used for the Frame that described code stream group is comprised is carried out the order decoding.
The invention has the beneficial effects as follows that video of the present invention separates coding method and system has reduced the code stream transmission quantity in the communication network, has improved efficiency of transmission, therefore be applicable to multiple network environment and equipment performance; When decoding end is decoded to the Frame in the code stream group, because I frame or P frame in each subcode stream group in the only dependence group of P frame are decoded, avoided the individual data LOF and, therefore improved the video playback effect the influence that the decoding of other Frames brings.
Further, encoder equally spaced is extracted into few Frame from the frame section, and each Frame that extracts forms different subcode stream groups, and this execution mode extracts Frame equably from the frame section, obtain continuous video playback effect.
Decoding end also can be obtained some or all of code stream according to network environment or equipment performance, and code stream transmission and decoding and network capabilities and terminal capability are adapted, and this mode is convenient more flexibly, has therefore further guaranteed video transmission and result of broadcast.
The present invention has also protected a kind of video monitoring system; can adapt to different network environments and equipment performance; if network condition is undesirable, the treating capacity of client is big or not high to the requirement of preview; streaming server only sends the code stream group that only comprises partial data frame in the former video to client; not only improved efficiency of transmission; and guaranteed the continuity and the real-time of video playback, improved the video monitoring effect.
Description of drawings
Fig. 1 is the schematic diagram of existing video monitoring system;
Fig. 2 is a kind of embodiment flow chart of video coding-decoding method of the present invention;
Fig. 3 is a kind of embodiment schematic diagram of video coding and decoding system of the present invention;
Fig. 4 is a kind of embodiment schematic diagram of video monitoring system of the present invention.
Embodiment
Video of the present invention is separated in the coding method, coding side divides into groups to continuous video behind the coding and decoding, according to situations such as network environment, equipment performances, the code stream group that only comprises a part of Frame in the former video is offered decoding end, when decoding end was decoded to the Frame in the code stream group, I frame or P frame in each subcode stream group in the only dependence group of P frame were decoded.Below in conjunction with accompanying drawing the specific embodiment of the present invention is further specified.
Fig. 1 is a kind of embodiment flow chart of video coding-decoding method of the present invention, may further comprise the steps:
Step S100: coding side resolves at least one frame section with continuous video, the is olation of frame section and length can be decided according to concrete needs, for example can be from a plurality of frame sections of continuous video random extraction, each frame section comprises the frame number that does not wait, the certain Frame in interval between the perhaps adjacent frame section; Preferably,, guarantee the display effect of video, continuous video is resolved into join end to end, comprise the frame section that equates frame number in order to realize code stream continuity in time as far as possible.The number of the Frame that common human eye can be seen in 1S is approximately 25 frames, and the frame per second of main flow video also is 25 frame per seconds, and therefore each frame section time corresponding can be set is one second, and promptly each frame section comprises 25 Frames.
Step S101: from the frame section, extract Frame and form the subcode stream group in chronological order.This step is extracted Frame from the frame section mode has a variety of, but one or more Frame of random extraction for example can equally spaced extract a plurality of Frames, and make the Frame of these extractions form a subcode stream group according to time sequencing.In addition, in order to satisfy user's multiple demand, coding side also can repeatedly extract Frame from the frame section, correspondingly forms a plurality of different subcode stream groups.Preferably, in order from the frame section, to extract Frame equably, obtain continuous video playback effect, encoder equally spaced interleaves at least Frame of extraction from the frame section, each Frame that extracts forms different subcode stream groups, for example extract sequence number and be followed successively by 1,4,7,10 ... 3n+1 (n is a positive integer) Frame is formed the first subcode stream group, extracts number to be followed successively by 2,5,8,11 again ... the Frame of 3n+2 (n is a positive integer) is formed the second subcode stream group.
Step S102: first frame to the subcode stream group is encoded in the mode of I frame.Because the compression ratio of I frame is much smaller than the P frame, so the data volume of I frame is bigger, in order to reach laser propagation effect preferably, after this step is encoded in the mode of I frame to first frame of one or more subcode streams, it is reference that other all Frames in this subcode stream group are all adopted first frame, mode with the P frame is encoded, and promptly only comprises an I frame in each subcode stream group.Preferably, can select to extract first frame of each frame section, make its first frame, form a plurality of subcode stream groups behind the Frame, first frame that first frame of each subcode stream group can all shared corresponding frame section if from this frame section, repeatedly extract as corresponding subcode stream group.
Step S103: the subcode stream group after will encoding is formed the code stream group according to time sequencing, forms a subcode stream group if only extract a Frame from each frame section, then only forms a code stream group; If repeatedly extract Frame and each subcode stream group of formation of extracting from each frame section, then from the subcode stream group of all frame section correspondences, select a part to make it form a code stream group, obtain at least one code stream group after repeatedly selecting.For example among the step S101, the first subcode stream group of all frame section correspondences is combined to form the first code stream group, and the second subcode stream group of all frame section correspondences is combined to form the second code stream group, by that analogy.
Step S104: decoding end is obtained the code stream group, in this step, owing to only comprised a part of Frame in the former video in the code stream group that decoding end obtains, therefore obviously less by communication network data quantity transmitted such as cable network, Ethernets, therefore this method is applicable to multiple network environment and terminal equipment, for example the terminal equipment of some slow Network Transmission conditions or poor-performing has improved data transmission bauds and quality.
In order to adapt to various users' different demands, i.e. the network environment of some client configuration better or terminal equipment is higher, therefore needs complete code stream; The network condition instability of some client needs complete code stream when network is better, only need one or more code stream groups when network is relatively poor, so decoder can be according to real needs acquisition request partial code streams group or whole code stream group.For example decoding end can be provided with the time-delay threshold values that can accept, and according to real-time delay value and time-delay the magnitude relationship between the threshold values is determined to obtain at least one code stream group from decoding end, when decoding end need be obtained code stream, at first judge according to network environment and equipment performance, disposal ability etc., if delay value is less than the time-delay threshold values in real time, the partial code streams group of code stream group of acquisition request or negligible amounts then, otherwise, a fairly large number of partial code streams group of acquisition request or whole code stream groups.
Step S105: the Frame that the code stream group is comprised carries out the order decoding, and after promptly the I frame in each subcode stream group being decoded, the P frame all relies on the I frame or other P frames are decoded.In this step, because the decoding of P frame only relies on the interior I frame of this group or the decoded data of P frame is decoded in each subcode stream group, if a certain I LOF, then only can have influence on the decoding of P frame in this group, can't influence the decoding of Frame in other subcode stream groups, therefore decoding end can select to abandon some incomplete subcode stream groups, and the reduction of data in the subcode stream group thereafter is not affected, therefore effectively avoid the partial data LOF and caused relatively poor display effect such as Hua Ping, improved the quality of video playback to a certain extent.Coding side also can be decoded to the part or all of code stream group that obtains according to concrete needs, if the user is lower to the broadcast request of video, perhaps equipment performance is poor, perhaps need to move simultaneously a plurality of programs, in order to realize that real-time, complete video playback (is particularly useful for guaranteeing real-time, and result of broadcast is required lower video monitoring system), also can only decode to the Frame in the code stream group interior molecules code stream group, after changing frame per second, can realize real-time, continuous video playback effect.
A kind of preferred embodiment in, decoding end carries out obtaining two code stream groups behind the packet decoding to continuous video, the user can specifically may further comprise the steps according to concrete needs acquisition request one of them or two code stream groups:
At first continuous video is resolved into a plurality of continuous frame sections, the number that each frame section comprises Frame is an odd number, and for example, each frame section comprises 25 continuous Frames, and time corresponding is 1 second.
Then, with first frame of each frame section first frame as each subcode stream group of correspondence, odd-numbered frame beyond extraction first frame also forms odd number subcode stream group in chronological order from each frame section again, extracts first frame even frame in addition again in each frame section and also forms even number subcode stream group in chronological order.For example, comprise 25 continuous Frames, extract that sequence number is followed successively by 1,3,5 beyond first frame for each frame section ... 12 Frames of 23, and form odd number subcode stream group in chronological order, coded system is:
IPPPPPPPPPPPP
Sequence number is followed successively by 2,4,6 beyond extracting first frame again ... 12 Frames of 24, and form even number subcode stream group in chronological order, coded system is identical with odd number subcode stream group.Then the odd number subcode stream group behind all codings is formed odd number code stream group according to time sequencing, the even number subcode stream group behind all codings is formed even number code stream group according to time sequencing.
At last, decoding end is according to the concrete acquisition request odd number of conditions such as network condition, status of equipment code stream group and/or even number code stream group, and the Frame in odd number code stream group and/or the even number code stream group is carried out the order decoding.If mode according to common coding, the frame per second that present embodiment obtains common code stream is 25 frame per seconds, and the frame per second that adopts block encoding to obtain the code stream group is 13 frame per seconds, need be in communication network data quantity transmitted approximately be kept to original half, therefore can adapt to multiple network environment and equipment performance, and owing to from former video, extract Frame equably and form the code stream group, the data message that each code stream group is comprised has kept the continuity of former video, has therefore significantly improved the display effect of video playback.
Be illustrated in figure 2 as a kind of video coding and decoding system schematic diagram of the present invention, comprise coding side 10 and decoding end 20, decoding end 20 can be provided with one or more according to concrete needs, wherein, coding side 10 comprises frame section decomposing module 11 and block encoding module 12, and each decoding end comprises code stream acquisition module 21 and packet decoding module 22.
Frame section decomposing module 11 is used for continuous video is resolved at least one frame section.
Code stream acquisition module 21 is used for obtaining the code stream group by communication networks such as cable network, Ethernet, 3G network or wireless networks from coding side 10, and sends it to packet decoding module 22.Considering needs to adapt to different network condition or equipment performance, and code stream acquisition module 21 can obtain some or all of code stream group as required.
Packet decoding module 22 is used for the Frame that the code stream group is comprised is carried out the order decoding, can decode to some or all of code stream group according to equipment performance and concrete needs, perhaps the Frame that parton code stream group in the code stream group is comprised is decoded.
Fig. 3 is a kind of video monitoring system schematic diagram of the present invention, comprise the front end watch-dog, streaming server 30 and client, the front end watch-dog comprises devices such as camera, The Cloud Terrace, also be provided with coding side 10, coding side 10 comprises frame section decomposing module 11 and block encoding module 12; Client is generally notebook computer, desktop computer, mobile phone, palmtop PC etc., wherein be provided with decoding end 20, decoding end 20 comprises code stream acquisition module 21 and packet decoding module 22, and client is undertaken by communication networks such as cable network, Ethernet, 3G network or wireless network and streaming server 30 alternately.
Frame section decomposing module 11 is used for the continuous video of front end watch-dog collection is resolved at least one frame section.
After block encoding module 12 is used for extracting Frame and forming the subcode stream group in chronological order from the frame section, first frame to the subcode stream group is encoded in the mode of I frame, after also being used for the subcode stream group behind the coding formed the code stream group according to time sequencing, the code stream group is offered streaming server 30.Block encoding module 12 forms a plurality of subcode stream groups can repeatedly extract Frame from each frame section after, and repeatedly chooser code stream group makes it form different code stream groups.
Code stream acquisition module 21 is used for obtaining the code stream group by communication network from streaming server 30, and according to the difference of actual conditions, the code stream acquisition module 21 of different clients can be to streaming server 30 acquisition request partial code streams groups or whole code stream group.If a client is by Ethernet acquisition request code stream, and network condition is relatively good, then can be to the whole code streams of streaming server 30 acquisition request; If another client is by the wireless network request msg, bandwidth ratio is less, then can after streaming server 30 is received message, only one of them code stream group be sent to client like this, the packet loss of client and time-delay situation will be eased to code stream group of streaming server 30 requests.In order rationally to control delay effect, a time-delay threshold values also can be set in the code stream acquisition module 22, and determine from streaming server 30, to obtain at least one code stream group according to the magnitude relationship between real-time delay value and the time-delay threshold values.
Packet decoding module 22 is used for the Frame that the code stream group is comprised is carried out the order decoding, packet decoding module 22 can be decoded to the Frame in the whole code stream groups that obtain according to equipment performance, disposal ability and actual demand etc., perhaps only the Frame in a part of code stream group is decoded, perhaps the Frame that the parton code stream group in the code stream group is comprised is decoded.
Video monitoring system of the present invention can adapt to different network environments and equipment performance, if network condition is undesirable, the treating capacity of client is big or not high to the requirement of preview, streaming server only sends the code stream group that only comprises partial data frame in the former video to client, not only improved efficiency of transmission, and guaranteed the continuity and the real-time of video playback, improved the video monitoring effect.Because I frame or other P frames that the P frame in each subcode stream group only relies in this group are decoded, effectively to have avoided in the prior art owing to the partial data LOF, other Frames can't be decoded and be caused relatively poor display effect such as Hua Ping.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (11)
1. a video coding-decoding method is characterized in that, may further comprise the steps:
Coding side resolves at least one frame section with continuous video, extracts Frame and form the subcode stream group in chronological order from described frame section;
First frame to described subcode stream group is encoded in the mode of I frame;
Subcode stream group behind the described coding is formed the code stream group according to time sequencing;
Decoding end is obtained described code stream group, and the Frame that described code stream group is comprised is carried out the order decoding.
2. method according to claim 1 is characterized in that: it is reference that coding side adopts first frame to other Frames in the described subcode stream group, encodes in the mode of P frame.
3. method according to claim 1 is characterized in that: when extracting Frame from described frame section, must extract first frame of described frame section.
4. according to each described method in the claim 1 to 3, it is characterized in that: coding side with the method that continuous video resolves at least one frame section is: coding side resolves into continuous video and joins end to end, comprises the frame section that equates frame number;
Coding side extracts Frame from described frame section method is: coding side equally spaced extracts Frame from described frame section.
5. method according to claim 4 is characterized in that: coding side extracts Frame from described frame section method is: coding side extracts at least Frame from described frame section, and each Frame that extracts forms a code stream group;
The method that subcode stream group behind the described coding is formed the code stream group according to time sequencing is: select the subcode stream group of all frame section correspondences and it is formed a code stream group, obtain at least one code stream group after repeatedly selecting;
The mode that decoding end is obtained described code stream group is: decoding end is according to concrete at least one code stream group of acquisition request.
6. method according to claim 5 is characterized in that: decoding end is provided with a time-delay threshold values, and described decoding end is obtained at least one data set according to the relationship request between real-time delay value and the time-delay threshold values from decoding end.
7. according to each described method in the claim 1 to 3, it is characterized in that: the mode that the Frame that decoding end is comprised described code stream group carries out the order decoding is: the Frame that decoding end is comprised part or all of subcode stream group in the described code stream group carries out the order decoding.
8. according to each described method in the claim 1 to 3, it is characterized in that: the number that each frame section comprises Frame is an odd number, extracts first frame of first frame of each frame section as each subcode stream group of correspondence;
Extract first frame odd-numbered frame in addition from described frame Duan Zhongzai and also form odd number subcode stream group in chronological order, extract first frame even frame in addition from described frame Duan Zhongzai and also form even number subcode stream group in chronological order;
Described odd number subcode stream group is formed odd number code stream group according to time sequencing, described even number subcode stream group is formed even number code stream group according to time sequencing;
Concrete acquisition request odd number code stream group of decoding end basis and/or even number code stream group, and the Frame in described odd number code stream group and/or the even number code stream group is carried out order decode.
9. method according to claim 8 is characterized in that: described each frame section comprises 25 continuous Frames, and each frame section time corresponding is 1 second.
10. a video coding and decoding system comprises coding side and decoding end, it is characterized in that: described coding side comprises frame section decomposing module and block encoding module, and described decoding end comprises code stream acquisition module and packet decoding module;
Frame section decomposing module is used for continuous video is resolved at least one frame section;
The block encoding module is used for from described frame section extraction Frame and after forming the subcode stream group in chronological order, first frame of described subcode stream group is encoded in the mode of I frame, also is used for the subcode stream group behind the described coding is formed the code stream group according to time sequencing;
The code stream acquisition module is used for obtaining described code stream group from described coding side, and sends it to the packet decoding module;
The packet decoding module is used for the Frame that described code stream group is comprised is carried out the order decoding.
11. a video monitoring system comprises the front end watch-dog, streaming server and at least one client, and it is characterized in that: described front end watch-dog is provided with coding side, and described coding side comprises frame section decomposing module and block encoding module; Described each client is provided with decoding end, and described decoding end comprises code stream acquisition module and packet decoding module;
Frame section decomposing module is used for the continuous video of described front end watch-dog collection is resolved at least one frame section;
After the block encoding module is used for extracting Frame and forming the subcode stream group in chronological order from described frame section, first frame to described subcode stream group is encoded in the mode of I frame, after also being used for the subcode stream group behind the described coding formed the code stream group according to time sequencing, described code stream group is offered described streaming server;
The code stream acquisition module is used for obtaining described code stream group by communication network from described streaming server;
The packet decoding module is used for the Frame that described code stream group is comprised is carried out the order decoding.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910190176 CN101692711A (en) | 2009-09-08 | 2009-09-08 | Method for encoding and decoding video, system and video monitoring system |
| PCT/CN2010/076353 WO2011029369A1 (en) | 2009-09-08 | 2010-08-25 | Video encoding and decoding method, system and video monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910190176 CN101692711A (en) | 2009-09-08 | 2009-09-08 | Method for encoding and decoding video, system and video monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101692711A true CN101692711A (en) | 2010-04-07 |
Family
ID=42081365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910190176 Pending CN101692711A (en) | 2009-09-08 | 2009-09-08 | Method for encoding and decoding video, system and video monitoring system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101692711A (en) |
| WO (1) | WO2011029369A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011029369A1 (en) * | 2009-09-08 | 2011-03-17 | 中兴通讯股份有限公司 | Video encoding and decoding method, system and video monitoring system |
| CN105706448A (en) * | 2015-12-25 | 2016-06-22 | 王晓光 | Decoding method and system for video software |
| CN106303693A (en) * | 2015-05-25 | 2017-01-04 | 北京视联动力国际信息技术有限公司 | A kind of method and device of video data decoding |
| CN107222715A (en) * | 2017-06-15 | 2017-09-29 | 杭州联吉技术有限公司 | A kind of method, device and the computer-readable recording medium of remote playing video |
| CN107800989B (en) * | 2017-10-16 | 2021-01-05 | 深圳市天视通电子科技有限公司 | Video display method and system based on dynamic frame rate detection and network video recorder |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2274224B (en) * | 1993-01-07 | 1997-02-26 | Sony Broadcast & Communication | Data compression |
| EP1835683A1 (en) * | 2006-03-16 | 2007-09-19 | Nokia Siemens Networks Gmbh & Co. Kg | Method for modulation of a codeword |
| CN100471278C (en) * | 2007-04-06 | 2009-03-18 | 清华大学 | Multi-view video compressed coding-decoding method based on distributed source coding |
| CN101692711A (en) * | 2009-09-08 | 2010-04-07 | 中兴通讯股份有限公司 | Method for encoding and decoding video, system and video monitoring system |
-
2009
- 2009-09-08 CN CN 200910190176 patent/CN101692711A/en active Pending
-
2010
- 2010-08-25 WO PCT/CN2010/076353 patent/WO2011029369A1/en active Application Filing
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011029369A1 (en) * | 2009-09-08 | 2011-03-17 | 中兴通讯股份有限公司 | Video encoding and decoding method, system and video monitoring system |
| CN106303693A (en) * | 2015-05-25 | 2017-01-04 | 北京视联动力国际信息技术有限公司 | A kind of method and device of video data decoding |
| CN105706448A (en) * | 2015-12-25 | 2016-06-22 | 王晓光 | Decoding method and system for video software |
| CN107222715A (en) * | 2017-06-15 | 2017-09-29 | 杭州联吉技术有限公司 | A kind of method, device and the computer-readable recording medium of remote playing video |
| CN107800989B (en) * | 2017-10-16 | 2021-01-05 | 深圳市天视通电子科技有限公司 | Video display method and system based on dynamic frame rate detection and network video recorder |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011029369A1 (en) | 2011-03-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7898950B2 (en) | Techniques to perform rate matching for multimedia conference calls | |
| US6986158B1 (en) | System and method for distributing video information over network | |
| US20080100694A1 (en) | Distributed caching for multimedia conference calls | |
| WO2016182844A1 (en) | Transferring media data using a websocket subprotocol | |
| CN101938624A (en) | Multipoint safe videoconference system with IP set-top box based on H.323 protocol | |
| WO2010031170A1 (en) | Low latency video encoder | |
| CN1917628A (en) | System and method for implementing channel change operations in internet protocol television systems | |
| US8959240B2 (en) | Method, apparatus and system for rapid acquisition of multicast realtime transport protcol sessions | |
| KR100410973B1 (en) | Method streaming moving picture video on demand | |
| CN102547375A (en) | Transmission method for quickly previewing H.264 coded picture | |
| CN105577819A (en) | Sharing system, sharing method and sharing device for virtual desktop | |
| CN101692711A (en) | Method for encoding and decoding video, system and video monitoring system | |
| CN104394426A (en) | Rate playing method and device of stream media | |
| CN102202210A (en) | Method for mobile phone to play real-time monitoring video and mobile phone to play real-time monitoring video | |
| CN104320716A (en) | A video uplink transmission method based on collaborative multiple terminals | |
| CN103108186A (en) | Method of achieving high-definition transmission of videos | |
| CN106993199A (en) | A kind of method and system of real-time video transcoding | |
| CN107172433A (en) | A kind of video encryption method | |
| CN111954028A (en) | Screen projection method, device and equipment of audio data and storage medium | |
| CN1298157C (en) | Audio and visual frequencies synchronizing method for IP network conference | |
| CN108632679B (en) | A kind of method that multi-medium data transmits and a kind of view networked terminals | |
| CN103929682A (en) | Method and device for setting key frames in video live broadcast system | |
| Alaya et al. | Multilayer video encoding for QoS managing of video streaming in VANET environment | |
| WO2013071460A1 (en) | Reducing amount op data in video encoding | |
| CN103686208B (en) | Video cloud computing transmitting method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100407 |