CN107087138A - A kind of video conferencing system based on H.265 video code model - Google Patents
A kind of video conferencing system based on H.265 video code model Download PDFInfo
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- CN107087138A CN107087138A CN201710223630.9A CN201710223630A CN107087138A CN 107087138 A CN107087138 A CN 107087138A CN 201710223630 A CN201710223630 A CN 201710223630A CN 107087138 A CN107087138 A CN 107087138A
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- 238000000034 method Methods 0.000 claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 238000012544 monitoring process Methods 0.000 claims abstract description 15
- 230000011664 signaling Effects 0.000 claims abstract description 13
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 5
- 241001269238 Data Species 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000000977 initiatory effect Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 2
- 230000000712 assembly Effects 0.000 claims description 2
- 238000003860 storage Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a kind of video conferencing system based on H.265 video code model, including signaling receiving and transmission module, performance monitoring module, video encoding module, Video decoding module, video stream management module, main program module, process manager module and video data transceiver module, the video encoding module uses the coding method based on H.265 coded format, the Video decoding module uses the coding/decoding method based on H.265 codec format, the video conferencing system replaces the H.264 Video coding mode of script using H.265 Video coding mode, substantially increase referring to for video under equal resolution, so as to solve the problem of HD video transmits the consumed network bandwidth and storage resources to a certain extent, and then the problem of video quality brought in the case of unstable networks is unstable is alleviated to a certain extent.
Description
Technical field
The present invention relates to video conferencing system field, and in particular to a kind of video council based on H.265 video code model
Conference system.
Background technology
When carrying out high definition conference, (resolution ratio is the existing video conferencing system based on H.264 video code model
720P or 1080P), the bandwidth shared by video flowing sent and received is very high, so that the speech quality pair of video conference
The requirement of network environment is very harsh, general to use dedicated network or ability is only carried out in the LAN of a relative closure
Preferable video effect is obtained, network fluctuation is larger or the less situation of bandwidth if run into, can largely influence high
The transmission of clear video flowing is received；Also, using the high definition conference video volume in the H.264 video conferencing system of coded format all
It is very big, if the video flowing received is uploaded into the server of some storages or is downloaded to locally from server, even if
Upload the bandwidth downloaded very big, it is also desirable to the long period.
The such case occurred in original video conferencing system is directed to, the present invention compiles it with newest H.265 video
Code form is combined so that the compression ratio of video is greatly promoted, and the video of more fine definition can be transmitted under limited bandwidth,
And the links of coding and decoding video are applied to by Directshow technologies, largely reduce and regarded on an equal basis
The size of encoded video stream during the video conference of frequency quality, be finally reached reduce video transmitting procedure in bandwidth consumption,
Reduce the storage area of video file and accelerate the transmission speed of video file between servers and other effects.
The content of the invention
The purpose of the present invention is based on H.265 video code model for above-mentioned the deficiencies in the prior art there is provided one kind
Video conferencing system, using H.265 Video coding mode replace script H.264 Video coding mode, substantially increase phase
Referred to video under resolution ratio, so as to a certain extent solving HD video transmits the consumed network bandwidth and storage
The problem of depositing resource, and then alleviate that the video quality brought in the case of unstable networks is unstable to ask to a certain extent
Topic.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of video conferencing system based on H.265 video code model, including signaling receiving and transmission module, performance monitoring mould
Block, video encoding module, Video decoding module, video stream management module, main program module, process manager module and video data
Transceiver module, the signaling receiving and transmission module is the network communication module based on Session Initiation Protocol, for information to be packaged, and is led to
Cross network and be sent to the terminal of particular ip address, or receive the information that other-end is sent；The performance monitoring module is used for
Each performance value in video conferencing monitoring system running, and perform corresponding processing side when performance value is abnormal
Formula；The video encoding module is used for the video data for receiving the camera for being connected to this terminal, uses the coding method specified
Original video data is encoded, and the video data encoded is sent to other-end；The Video decoding module is used
In receiving the video data that other-end is sended over, and the coding method used according to the video data, corresponding solution is used
Code method is decoded to video data, and decoded video data shown or locally-stored；The video flow tube
Managing module is used to coding module and decoder module are created and closed for all video flowings, wherein, in a video conferencing system
The camera video used or the video sended over from other-end are referred to as a video flowing, each video flowing pair
Answer a coding module or decoder module；The main program module is for providing the interface of terminal and user mutual and terminal being entered
Row configuration；The process manager module uses D-Bus Inter-Process Communication mechanism, the communication being responsible between modules and each mould
The establishment and closing of block；The video data transceiver module is based on Real-time Transport Protocol, and the video data transmitting encoded is delivered to and specified eventually
End, or receive video data from the terminal of specified IP address.
Further, the information of the signaling receiving and transmission resume module is session control category information, the performance monitoring mould
Each performance value in the video conferencing system running of block monitoring includes bandwidth consumption and disk read-write speed.
Further, the video encoding module uses the coding method based on H.265 coded format, the video decoding
Module uses the coding/decoding method based on H.265 codec format.
Further, the Video decoding module can enter row format conversion to decoded video data, to adapt to not
The need for playback equipment.
Further, the frame that the video encoding module and Video decoding module are built using Directshow technologies
Frame, and hardware encoding and hardware decoding or Software Coding and soft can optionally be used according to the difference of terminal hardware environment
Part decoding two ways carries out the realization of encoding and decoding.
Further, the video conferencing system acquiescence terminal device based on H.265 video code model has hardware
Hardware required for encoding and decoding, and by way of hardware compression, by video stream data with H.265 coded format in each terminal
Coding transmission and broadcasting is decoded between equipment, but to only demand is a small amount of or encoding and decoding of single HD video, compiled again without hardware
Decoding required for hardware in the case of, the video conferencing system can automatic decision, carried out using software codec mode
The encoding and decoding of video.
Further, the hardware encoding flow is：The original of camera is received from DirectShow data source component
Video stream data, carries out the coding of H.265 coded format using Intel processor hardware, RTP is given by the data encoded
Sending assembly is sent to the terminal program port of correspondence IP address；The hardware decoding process is：Received from RTP components after coding
Video data, cached and give Video decoding module and decoded, Video decoding module reads from order caching and regarded
Frequency evidence simultaneously carries out the decoding of H.265 coded format, and decoded video data is given using Intel processor hardware
The video flowing received is rendered to screen by render component, render component.
Further, the Software Coding flow is：The original of camera is received from DirectShow data source component
Video stream data, is converted to YUV420 forms, then to YUV original video datas according to different types of video stream data form
Encoded, video data transceiver module is given by the data encoded, be sent to the terminal program port of correspondence IP address；Institute
Stating software decoding process is：The video data after coding is received from video data transceiver module, is cached and gives video solution
Code module is decoded, Video decoding module reading video data and use correspondence decoding storehouse from order caching, passes through CPU's
Computing is decoded, and gives render component by decoded video data, and render component renders to the video flowing received
Screen.
The present invention compared with prior art, has the following advantages that and beneficial effect：
Video conferencing system of the present invention based on H.265 video code model, relative to using now H.264
The video conferencing system of video code model, in terms of the volume of video flowing, the compression ratio for video stream data has and carried greatly very much
Height, and then the bandwidth required for the video flowing of identical original quality is propagated in internet and time have been reduced by, also for right
In the mobile terminal of bandwidth and size of data, such as mobile phone, carry out HD video meeting and a kind of feasible mode is provided；In addition, logical
The compression to video stream data is crossed, the volume of video stream data is reduced, and reduced when sending and receiving video stream data
Produced CPU time consumption, so reduce the system that is perceived for user during video conference using delay and
The transmitting-receiving delay of video.
Brief description of the drawings
Fig. 1 is the structural representation of video conferencing system of the embodiment of the present invention based on H.265 video code model.
Fig. 2 is video encoding module in video conferencing system of the embodiment of the present invention based on H.265 video code model
Workflow diagram.
Fig. 3 is Video decoding module in video conferencing system of the embodiment of the present invention based on H.265 video code model
Workflow diagram.
Embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited
In this.
Embodiment：
As shown in figure 1, a kind of video conferencing system based on H.265 video code model is present embodiments provided, including
Signaling receiving and transmission module, performance monitoring module, video encoding module, Video decoding module, video stream management module, main program mould
Block, process manager module and video data transceiver module, the signaling receiving and transmission module are the network service moulds based on Session Initiation Protocol
Block, for information to be packaged, and is sent to by network the terminal of particular ip address, or receive what other-end was sent
Information；Each performance value that the performance monitoring module is used in video conferencing monitoring system running, and in performance number
Value performs corresponding processing mode when abnormal；The video encoding module is used for the video for receiving the camera for being connected to this terminal
Data, are encoded using the coding method specified to original video data, and the video data encoded is sent into other
Terminal；The Video decoding module is used to receive the video data that other-end is sended over, and is used according to the video data
Coding method, video data is decoded using corresponding coding/decoding method, decoded video data is shown
Or it is locally-stored；The video stream management module is used to coding module and decoder module are created and closed for all video flowings,
Wherein, used in a video conferencing system to camera video or the video that sends over from other-end be referred to as one
Individual video flowing, each video flowing one coding module of correspondence or decoder module；The main program module be used for provide terminal with
The interface of user mutual is simultaneously configured to terminal；The process manager module uses D-Bus Inter-Process Communication mechanism, is responsible for each
The communication of individual intermodule and the establishment of modules and closing；The video data transceiver module is based on Real-time Transport Protocol, will encode
Good video data transmitting delivers to designated terminal, or receives video data from the terminal of specified IP address.
Wherein, the information of the signaling receiving and transmission resume module is session control category information, the performance monitoring module prison
Each performance value in the video conferencing system running of control includes bandwidth consumption and disk read-write speed.The video is compiled
Code module uses the coding method based on H.265 coded format, and the Video decoding module is used based on H.265 codec format
Coding/decoding method.Also, the Video decoding module can enter row format conversion to decoded video data, be broadcast with adapting to difference
The need for putting equipment.
Further, the frame that the video encoding module and Video decoding module are built using Directshow technologies
Frame, and hardware encoding and hardware decoding or Software Coding and soft can optionally be used according to the difference of terminal hardware environment
Part decoding two ways carries out the realization of encoding and decoding.The video conferencing system acquiescence based on H.265 video code model is eventually
End equipment has the hardware required for hardware compression, and by way of hardware compression, by video stream data H.265 to compile
Code form coding transmission and decodes broadcasting between each terminal device, but to only demand is a small amount of or volume solution of single HD video
Code, again without the hardware required for hardware compression in the case of, the video conferencing system can automatic decision, use software
Code encoding/decoding mode carries out the encoding and decoding of video.Wherein, the hardware encoding flow is：Connect from DirectShow data source component
The original video flow data of camera is received, the coding of H.265 coded format is carried out using Intel processor hardware, will encode
Good data give the terminal program port that RTP sending assemblies are sent to correspondence IP address；The hardware decoding process is：From
RTP components receive the video data after coding, are cached and give Video decoding module and are decoded, Video decoding module from
Reading video data and use Intel processor hardware carry out the decoding of H.265 coded format in order caching, and will decoding
Video data afterwards gives render component, and the video flowing received is rendered to screen by render component.The Software Coding flow
For：The original video flow data of camera is received from DirectShow data source component, according to different types of video fluxion
YUV420 forms are converted to according to form, then YUV original video datas are encoded, video counts are given by the data encoded
According to transceiver module, the terminal program port of correspondence IP address is sent to；The software decoding process is：Mould is received and dispatched from video data
Block receives the video data after coding, is cached and gives Video decoding module and is decoded, and Video decoding module is from reception
Reading video data and using correspondence decoding storehouse in caching, is decoded by CPU computing, and by decoded video data
Render component is given, the video flowing received is rendered to screen by render component.
The video conferencing system based on H.265 video code model is for the idiographic flow of the reception of video：It is first
First system carries out information exchange according to the reception video of user by process manager module notice signaling transceiver module and particular terminal
(information is included such as：The IP address of distant terminal, the IP address of this terminal, the video resolution for the video flowing to be received etc.), it
Afterwards as the new reception video flowing of video stream management module process creation (as shown in dotted portion in Fig. 1, wherein including video data
Transceiver module and Video decoding module), to receive the video flowing sended over from other-end.When user stops reception, this is regarded
When frequency flows, main program module will send stopping reception to corresponding terminal by process manager module notice signaling transceiver module and regard
Frequency message, video stream management module, which will be destroyed, afterwards corresponding receives video flowing.It is for the idiographic flow of the transmission of video：System
System only can just send the video data of local camera collection when being sent request message by the video of other-end, work as receipts
Sent to video when asking, system can parse the data included in message, obtain the IP address of requesting terminal, and by itself
IP address and the details for the video to be sent return to the sender of message, and video stream management module, wound are notified afterwards
Build and send video flowing (as shown in dotted portion in Fig. 1, wherein including video data transceiver module and video encoding module), and by
The data of correspondence video are sent to designated terminal by video stream data transceiver module therein, and requesting terminal is sent when receiving video
When the termination of transmission receives video messaging, signaling receiving and transmission module notifies video stream management module to stop sending out by process manager module
Send video data and destroy corresponding transmission video flowing.
Wherein, the workflow diagram of the video encoding module is as shown in Fig. 2 required when encoder is coding first
Parameter set setting acquiescence initial value, storage allocation space simultaneously carry out default initialization, afterwards using encoder cycles to original video
Data are encoded, and when there is no when video input or video flowing closing, are exported remaining video data and are terminated coding.Video
The workflow diagram of decoder module is as shown in figure 3, system is first according to configuration or the type of automatic detection encoder, and decision will make
Encoder, receives from the incoming video data of other modules, the Video stream information in data is obtained, according to stream information afterwards
Initializing decoder context mechanism body, is decoded, and pass to the mould in downstream frame by frame to the video data received afterwards
Block, carries out file preservation or shows to screen.
It is described above, it is only patent preferred embodiment of the present invention, but the protection domain of patent of the present invention is not limited to
This, any one skilled in the art is in the scope disclosed in patent of the present invention, according to the skill of patent of the present invention
Art scheme and its patent of invention design are subject to equivalent substitution or change, belong to the protection domain of patent of the present invention.
Claims (8)
1. a kind of video conferencing system based on H.265 video code model, it is characterised in that：Including signaling receiving and transmission module, property
Can monitoring module, video encoding module, Video decoding module, video stream management module, main program module, process manager module and
Video data transceiver module, the signaling receiving and transmission module is the network communication module based on Session Initiation Protocol, for information to be sealed
Dress, and the terminal of particular ip address is sent to by network, or receive the information that other-end is sent；The performance monitoring mould
Each performance value that block is used in video conferencing monitoring system running, and perform corresponding place when performance value is abnormal
Reason mode；The video encoding module is used for the video data for receiving the camera for being connected to this terminal, uses the coding specified
Method is encoded to original video data, and the video data encoded is sent into other-end；The video decodes mould
Block is used to receive the video data that other-end is sended over, and the coding method used according to the video data, uses correspondence
Coding/decoding method video data is decoded, decoded video data shown or locally-stored；The video
Stream management module is used to coding module and decoder module are created and closed for all video flowings, wherein, a video conference system
Used in system to camera video or the video that sends over from other-end be referred to as a video flowing, each video
Stream one coding module of correspondence or decoder module；The main program module is for providing the interface of terminal and user mutual and to end
End is configured；The process manager module uses D-Bus Inter-Process Communication mechanism, the communication be responsible between modules and each
The establishment and closing of individual module；The video data transceiver module is based on Real-time Transport Protocol, and the video data transmitting encoded is delivered into finger
Determine terminal, or video data is received from the terminal of specified IP address.
2. a kind of video conferencing system based on H.265 video code model according to claim 1, it is characterised in that：
The information of the signaling receiving and transmission resume module is session control category information, the video conference system of the performance monitoring module monitoring
Each performance value in system running includes bandwidth consumption and disk read-write speed.
3. a kind of video conferencing system based on H.265 video code model according to claim 1, it is characterised in that：
The video encoding module uses the coding method based on H.265 coded format, and the Video decoding module is used based on H.265
The coding/decoding method of codec format.
4. a kind of video conferencing system based on H.265 video code model according to claim 1, it is characterised in that：
The Video decoding module can enter row format conversion to decoded video data, the need for adapting to different playback equipments.
5. a kind of video conferencing system based on H.265 video code model according to claim 1, it is characterised in that：
The framework that the video encoding module and Video decoding module are built using Directshow technologies, and can be hard according to terminal
The difference of part environment, is optionally compiled using hardware encoding and hardware decoding or Software Coding and software decoding two ways
The realization of decoding.
6. a kind of video conferencing system based on H.265 video code model according to claim 5, it is characterised in that：
The video conferencing system acquiescence terminal device based on H.265 video code model has hard required for hardware compression
Part, and by way of hardware compression, by video stream data with H.265 coded format the coding transmission between each terminal device
And decode broadcasting, but to only demand is a small amount of or encoding and decoding of single HD video, again without the hardware required for hardware compression
In the case of, the video conferencing system can automatic decision, the encoding and decoding of video are carried out using software codec mode.
7. a kind of video conferencing system based on H.265 video code model according to claim 5 or 6, its feature exists
In：The hardware encoding flow is：The original video flow data of camera is received from DirectShow data source component, is used
Intel processor hardware carries out the coding of H.265 coded format, gives RTP sending assemblies by the data encoded and is sent to
The terminal program port of correspondence IP address；The hardware decoding process is：The video data after coding is received from RTP components, is entered
Row is cached and gives Video decoding module and decoded, and Video decoding module reading video data and is used from order caching
Intel processor hardware carries out the decoding of H.265 coded format, and gives render component, wash with watercolours by decoded video data
Component is contaminated by the video flowing received, renders to screen.
8. a kind of video conferencing system based on H.265 video code model according to claim 5 or 6, its feature exists
In：The Software Coding flow is：The original video flow data of camera is received from DirectShow data source component, according to
Different types of video stream data form is converted to YUV420 forms, and then YUV original video datas are encoded, and will encode
Good data give video data transceiver module, are sent to the terminal program port of correspondence IP address；The software decoding process
For：The video data after coding is received from video data transceiver module, is cached and gives Video decoding module and decoded,
Video decoding module reading video data and use correspondence decoding storehouse from order caching, are decoded by CPU computing, and
Render component is given by decoded video data, the video flowing received is rendered to screen by render component.
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| CN114640862A (en) * | 2020-12-16 | 2022-06-17 | 西安诺瓦星云科技股份有限公司 | Video processing method, device, computer readable storage medium and processor |
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