CN105635751A - Video cloud platform video playing method and device - Google Patents

Video cloud platform video playing method and device Download PDF

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Publication number
CN105635751A
CN105635751A CN201510994084.XA CN201510994084A CN105635751A CN 105635751 A CN105635751 A CN 105635751A CN 201510994084 A CN201510994084 A CN 201510994084A CN 105635751 A CN105635751 A CN 105635751A
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CN
China
Prior art keywords
video
client terminal
cloud platform
data packet
described
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CN201510994084.XA
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Chinese (zh)
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CN105635751B (en
Inventor
原春辉
修典荣
张利
陶明
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北京大学第三医院
原春辉
修典荣
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Priority to CN201510994084.XA priority Critical patent/CN105635751B/en
Publication of CN105635751A publication Critical patent/CN105635751A/en
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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
    • H04N21/2343Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/2662Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/643Communication protocols
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81Monomedia components thereof
    • H04N21/816Monomedia components thereof involving special video data, e.g 3D video

Abstract

The invention discloses a video cloud platform video playing method and device, and relates to the technical field of video playing. The method comprises the following steps that a client side is connected with a video cloud platform and then the video cloud platform provides video frames of multiple rendering effects to the client side according to the rendering request of the client side for selection of the client side; the video cloud platform receives a video frame selection result of the client side and saves the rendering parameters of the video frames selected by the client side; and when the client side then transmits a video playing request to the video cloud platform, the video cloud platform performs rendering on videos which are requested to be played by the client side by utilizing the saved rendering parameters and then transmits the videos to the client side. Investment of the client side can be greatly reduced, and a shared packaging rendering center can also dynamically extend in necessity so that utilization rate of equipment can be enhanced and investment can be protected.

Description

A kind of video cloud platform plays method and the device of video

Technical field

The present invention relates to video display arts field, play method and the device of video in particular to a kind of video cloud platform.

Background technology

The computing environment of prior art depends on each terminal hardware performance separately. Along with the development of computer networking technology, the computing environment of prior art develops into cloud computing environment, and wherein, described cloud computing environment is according to the request of terminal, it may also be useful to the various calculating resources on network provide corresponding service.

But, in recent years, cloud computing becomes one of topic that IT field attracts people's attention most, in use cannot reach user and envision Video Composition effect, accurate editor and the broadcasting of high-quality video and audio cannot be realized in high in the clouds and server resource cannot be utilized to carry out parallel computation, therefore cannot improve the utilization ratio of equipment.

Summary of the invention

It is an object of the invention to provide method and device that a kind of video cloud platform plays video, solve accurate editor and the broadcasting that cannot realize high-quality video and audio in prior art in high in the clouds and server resource cannot be utilized to carry out the problem of parallel computation.

According to an aspect of the present invention, it provides a kind of video cloud platform plays the method for video, comprises the following steps:

After client's side link to video cloud platform, video cloud platform, according to the render request of client terminal, provides the frame of video of multiple rendering effect, selects for client terminal to client terminal;

Video cloud platform receives the frame of video selection result of client terminal, and preserves the rendering parameter of the frame of video that client terminal is selected;

When client terminal sends video playback request subsequently to video cloud platform, video cloud platform is sent to described client terminal after utilizing its rendering parameter preserved to be played up by the video that client-requested is play.

Preferably, described video cloud platform comprises streaming media server and rendering server;

Wherein said streaming media server according to the video playback request of client terminal, to the corresponding video of client terminal playing;

Described rendering server is after client's side link to video cloud platform, the frame of video that multiple rendering effect is provided, the frame of video selection result receiving client terminal, the rendering parameter preserving the frame of video that client terminal is selected, and when described streaming media server is to client terminal playing video, utilize its rendering parameter preserved to be played up by the video play.

Preferably, described video cloud platform also comprises Video Composition server, and described Video Composition server, according to multiple Video Composition requests of client terminal, after the video belonging to multiple streaming media server is carried out synthesis process, is sent to described client terminal.

Preferably, described client terminal sends video playback request to streaming media server in the way of signaling agreement data packet; Described streaming media server sends the corresponding video needing to play in the way of media protocol data packet to client terminal.

Preferably, described signaling agreement data packet comprises frame signaling agreement data packet, signaling agreement data packet play by file and plays stopping signaling agreement data packet; Described media protocol data packet comprises video media-data agreement data packet, audio media data agreement data packet and IBP mono-frame video media-data agreement data packet.

According to a further aspect in the invention, it provides a kind of video cloud platform plays the device of video, comprising:

Selecting frame of video module, after client's side link to video cloud platform, video cloud platform, according to the render request of client terminal, provides the frame of video of multiple rendering effect, selects for client terminal to client terminal;

Preserve rendering parameter module, receive the frame of video selection result of client terminal for video cloud platform, and preserve the rendering parameter of the frame of video that client terminal is selected;

Video rendering module, for when client terminal sends video playback request subsequently to video cloud platform, video cloud platform is sent to described client terminal after utilizing its rendering parameter preserved to be played up by the video that client-requested is play.

Preferably, described video cloud platform comprises streaming media server and rendering server;

Wherein said streaming media server according to the video playback request of client terminal, to the corresponding video of client terminal playing;

Described rendering server is after client's side link to video cloud platform, the frame of video that multiple rendering effect is provided, the frame of video selection result receiving client terminal, the rendering parameter preserving the frame of video that client terminal is selected, and when described streaming media server is to client terminal playing video, utilize its rendering parameter preserved to be played up by the video play.

Preferably, described video cloud platform also comprises Video Composition server, and described Video Composition server, according to multiple Video Composition requests of client terminal, after the video belonging to multiple streaming media server is carried out synthesis process, is sent to described client terminal.

Preferably, described client terminal sends video playback request to streaming media server in the way of signaling agreement data packet; Described streaming media server sends the corresponding video needing to play in the way of media protocol data packet to client terminal.

Preferably, described signaling agreement data packet comprises frame signaling agreement data packet, signaling agreement data packet play by file and plays stopping signaling agreement data packet; Described media protocol data packet comprises video media-data agreement data packet, audio media data agreement data packet and IBP mono-frame video media-data agreement data packet.

Compared with prior art, the useful effect of the present invention is:

The present invention

Accompanying drawing explanation

Fig. 1 is the method flow diagram that a kind of video cloud platform provided by the invention plays video;

Fig. 2 is the device schematic diagram that a kind of video cloud platform provided by the invention plays video;

Fig. 3 is the schematic diagram that the video cloud platform that the embodiment of the present invention provides plays the rendering server work of video;

Fig. 4 is the schematic diagram that the video cloud platform that the embodiment of the present invention provides plays the Video Composition server work of video.

Embodiment

Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail, it will be appreciated that following illustrated preferred embodiment, only for instruction and explanation of the present invention, is not intended to limit the present invention.

Fig. 1 is the method flow diagram that a kind of video cloud platform provided by the invention plays video, as shown in Figure 1, comprises the following steps:

Step S101: after client's side link to video cloud platform, video cloud platform, according to the render request of client terminal, provides the frame of video of multiple rendering effect, selects for client terminal to client terminal;

Step S102: video cloud platform receives the frame of video selection result of client terminal, and preserve the rendering parameter of the frame of video that client terminal is selected;

Step S103: when client terminal sends video playback request subsequently to video cloud platform, video cloud platform is sent to described client terminal after utilizing its rendering parameter preserved to be played up by the video that client-requested is play.

Wherein, described video cloud platform comprises streaming media server and rendering server; Wherein said streaming media server according to the video playback request of client terminal, to the corresponding video of client terminal playing; Described rendering server is after client's side link to video cloud platform, the frame of video that multiple rendering effect is provided, the frame of video selection result receiving client terminal, the rendering parameter preserving the frame of video that client terminal is selected, and when described streaming media server is to client terminal playing video, utilize its rendering parameter preserved to be played up by the video play.

Wherein, described video cloud platform also comprises Video Composition server, and described Video Composition server, according to multiple Video Composition requests of client terminal, after the video belonging to multiple streaming media server is carried out synthesis process, is sent to described client terminal.

Specifically, described client terminal sends video playback request to streaming media server in the way of signaling agreement data packet; Described streaming media server sends the corresponding video needing to play in the way of media protocol data packet to client terminal. Wherein, described signaling agreement data packet comprises frame signaling agreement data packet, signaling agreement data packet play by file and plays stopping signaling agreement data packet; Described media protocol data packet comprises video media-data agreement data packet, audio media data agreement data packet and IBP mono-frame video media-data agreement data packet.

Fig. 2 is the device schematic diagram that a kind of video cloud platform provided by the invention plays video, as shown in Figure 2, comprising: selects frame of video module 201, preserve rendering parameter module 202 and video rendering module 203. Described selection frame of video module 201, after client's side link to video cloud platform, video cloud platform, according to the render request of client terminal, provides the frame of video of multiple rendering effect, selects for client terminal to client terminal; Described preservation rendering parameter module 202, receives the frame of video selection result of client terminal for video cloud platform, and preserves the rendering parameter of the frame of video that client terminal is selected; Described video rendering module 203, for when client terminal sends video playback request subsequently to video cloud platform, video cloud platform is sent to described client terminal after utilizing its rendering parameter preserved to be played up by the video that client-requested is play.

Wherein, described video cloud platform comprises streaming media server and rendering server; Wherein said streaming media server according to the video playback request of client terminal, to the corresponding video of client terminal playing; Described rendering server is after client's side link to video cloud platform, the frame of video that multiple rendering effect is provided, the frame of video selection result receiving client terminal, the rendering parameter preserving the frame of video that client terminal is selected, and when described streaming media server is to client terminal playing video, utilize its rendering parameter preserved to be played up by the video play.

Wherein, described video cloud platform also comprises Video Composition server, and described Video Composition server, according to multiple Video Composition requests of client terminal, after the video belonging to multiple streaming media server is carried out synthesis process, is sent to described client terminal.

Wherein, described client terminal sends video playback request to streaming media server in the way of signaling agreement data packet; Described streaming media server sends the corresponding video needing to play in the way of media protocol data packet to client terminal. Described signaling agreement data packet comprises frame signaling agreement data packet, signaling agreement data packet play by file and plays stopping signaling agreement data packet; Described media protocol data packet comprises video media-data agreement data packet, audio media data agreement data packet and IBP mono-frame video media-data agreement data packet.

Video cloud platform completes the reading of the former material of video, makes full use of video cloud platform and calculates resource, parallel decoding. To be carried out the code rate adjustment encoded according to network bandwidth situation simultaneously. Wanting the order of customer in response end to operate, such as client terminal requires a certain two field picture obtaining video file, and needs how many videos are carried out synthesis etc. simultaneously. State according to current hardware determines to start how many rendering server, such as current rendering server CPU (CentralProcessingUnit, central processing unit)/GPU (GraphicsProcessingUnit, graphic process unit) quantity carry out Distribution Calculation unit, simultaneously rendering server is wanted to dispatch rendering server according to the hardware resource constantly added, and such as has new workstation to join in computation process and carrys out rendering server in cluster and want all to be assigned in time in new workstation by rendering task.

Video cloud platform requires can run in different operating system, so video cloud platform is wanted to support cross-platform operation, simultaneously in order to ensure the calculating cost of video cloud platform, it is possible to select the open source software that can support various video code/decode format. Video cloud platform software is divided into two kinds: rendering server is mainly used to receive client terminal video request, such as plays, and obtains the requests such as frame, then result is sent to client terminal; Video Composition server is mainly used to receive client terminal synthesis result request, is packaged into the form specified.

Video cloud platform to be supported cluster, and cluster needs to operate multiple hardwares resource parallel exactly, to reach the object making full use of resource. In actual use, it is possible to a server has multiple CPU and GPU, also may be a server group simultaneously, have multiple server to ensure the parallelism that video calculates. Swarm algorithm is to each client terminal when connecting, and takes turns client terminal of changing commanders and is connected with a server, client terminal so just can be distributed to different servers physically uniformly. Can adjust according to the working order of current server simultaneously, such as current server may work very at full capacity, if there being client terminal sending request to this server, just should by this client's side link on the server of other free time.

The workflow of the present invention: client terminal obtains the outer net address of streaming media server by PHP configuration, is then connected with streaming media server, and client terminal to be protected with streaming media server and is connected simultaneously. After each client's side link request is received in streaming media service, a thread will be started, this thread carrys out work by being assigned in the CPU hardware resource specified, the dialogue with client terminal and rendering task will be completed, after streaming media server obtains the video/audio of some amount after starting broadcasting, then carrying out data-pushing according to certain speed, the data of propelling movement can be H264IBP video data stream and AAC audio frequency stream; Streaming media server needs to support that therefore various video and audio form to be carried out very complicated Video Quality Metric, the conversion of such as video format, the conversion of standard, the conversion of resolving power, conversion of pixel the ratio of width to height etc. Video and audio compress data are issued client terminal by the privately owned agreement of TCP when playing by order by streaming media server; Streaming media server and client terminal definition have signaling agreement data packet specification (sending request to streaming media server by client terminal) and media data agreement data pack protocol (by streaming media server to client push data); Signaling agreement data packet obtains frame signaling agreement data packet, signaling agreement data packet play by file, play stopping signaling agreement data packet etc., and media data agreement data are surrounded by video media-data agreement data packet, audio media data agreement data packet, IBP mono-frame video media-data agreement data packet.

As shown in Figure 3, described rendering server is after client's side link to video cloud platform, the frame of video that multiple rendering effect is provided, the frame of video selection result receiving client terminal, the rendering parameter preserving the frame of video that client terminal is selected, and when described streaming media server is to client terminal playing video, utilize its rendering parameter preserved to be played up by the video play. That is, client terminal is mainly used to respond the operation of user, and co-current flow media services device is given an order, and rendering result is displayed in interface, and the result of user is preserved in the server; Client terminal to be carried out interface and streaming media playing control to be defined a set of data structure simultaneously and is used for preserving the result of user and being used for carrying out data interaction with server end.

As shown in Figure 4, described Video Composition server, according to multiple Video Composition requests of client terminal, after the video belonging to multiple streaming media server is carried out synthesis process, is sent to described client terminal. That is, synthesis server provides service at 8888 ports, client terminal issues the synthesis multiple task of task server by http agreement, and task rotation is assigned to different servers each task starts the parallel synthesis that multi-thread journey can carry out multiframe simultaneously.

In sum, the present invention has following technique effect:

The rendering resources that the present invention can be correlated with according to front desk service demand dynamic assignment, significantly reduces the input of client terminal, really makes foreground thin-client. Video cloud computing system possesses streaming media service interface, frame is used to play up technology, outside supporting the video and audio file of various form, also can carry out the computings such as multilayer video/audio encoding and decoding, compression in real time, then frame transmission is carried out, it is published to client terminal, it is achieved the stream service towards editor's class is issued, and these computings all to be completed within very short time. Based on video cloud computing technique; even if user utilizes the small-sized thin-client such as notebook computer, IPAD; also search operation response, multi-layer video editor, the preview operation of fast frame precision can be carried out; realize real-time Video Composition effect; the investment of much slower client terminal simultaneously; center is played up in the packing shared if desired can also dynamic expansion, it is to increase plant factor, protects investment.

Although above to invention has been detailed explanation, but the present invention is not limited thereto, those skilled in the art of the present technique can carry out various amendment according to the principle of the present invention. Therefore, all amendments done according to the principle of the invention, all should be understood to fall into protection scope of the present invention.

Claims (10)

1. the method for a video cloud platform broadcasting video, it is characterised in that, comprise the following steps:
After client's side link to video cloud platform, video cloud platform, according to the render request of client terminal, provides the frame of video of multiple rendering effect, selects for client terminal to client terminal;
Video cloud platform receives the frame of video selection result of client terminal, and preserves the rendering parameter of the frame of video that client terminal is selected;
When client terminal sends video playback request subsequently to video cloud platform, video cloud platform is sent to described client terminal after utilizing its rendering parameter preserved to be played up by the video that client-requested is play.
2. method according to claim 1, it is characterised in that, described video cloud platform comprises streaming media server and rendering server;
Wherein said streaming media server according to the video playback request of client terminal, to the corresponding video of client terminal playing;
Described rendering server is after client's side link to video cloud platform, the frame of video that multiple rendering effect is provided, the frame of video selection result receiving client terminal, the rendering parameter preserving the frame of video that client terminal is selected, and when described streaming media server is to client terminal playing video, utilize its rendering parameter preserved to be played up by the video play.
3. method according to claim 1, it is characterized in that, described video cloud platform also comprises Video Composition server, described Video Composition server is according to multiple Video Composition requests of client terminal, after the video belonging to multiple streaming media server is carried out synthesis process, it is sent to described client terminal.
4. method according to claim 2, it is characterised in that, described client terminal sends video playback request to streaming media server in the way of signaling agreement data packet; Described streaming media server sends the corresponding video needing to play in the way of media protocol data packet to client terminal.
5. method according to claim 4, it is characterised in that, described signaling agreement data packet comprises frame signaling agreement data packet, signaling agreement data packet play by file and plays stopping signaling agreement data packet; Described media protocol data packet comprises video media-data agreement data packet, audio media data agreement data packet and IBP mono-frame video media-data agreement data packet.
6. the device of a video cloud platform broadcasting video, it is characterised in that, comprising:
Selecting frame of video module, after client's side link to video cloud platform, video cloud platform, according to the render request of client terminal, provides the frame of video of multiple rendering effect, selects for client terminal to client terminal;
Preserve rendering parameter module, receive the frame of video selection result of client terminal for video cloud platform, and preserve the rendering parameter of the frame of video that client terminal is selected;
Video rendering module, for when client terminal sends video playback request subsequently to video cloud platform, video cloud platform is sent to described client terminal after utilizing its rendering parameter preserved to be played up by the video that client-requested is play.
7. device according to claim 6, it is characterised in that, described video cloud platform comprises streaming media server and rendering server;
Wherein said streaming media server according to the video playback request of client terminal, to the corresponding video of client terminal playing;
Described rendering server is after client's side link to video cloud platform, the frame of video that multiple rendering effect is provided, the frame of video selection result receiving client terminal, the rendering parameter preserving the frame of video that client terminal is selected, and when described streaming media server is to client terminal playing video, utilize its rendering parameter preserved to be played up by the video play.
8. device according to claim 6, it is characterized in that, described video cloud platform also comprises Video Composition server, described Video Composition server is according to multiple Video Composition requests of client terminal, after the video belonging to multiple streaming media server is carried out synthesis process, it is sent to described client terminal.
9. device according to claim 7, it is characterised in that, described client terminal sends video playback request to streaming media server in the way of signaling agreement data packet; Described streaming media server sends the corresponding video needing to play in the way of media protocol data packet to client terminal.
10. device according to claim 9, it is characterised in that, described signaling agreement data packet comprises frame signaling agreement data packet, signaling agreement data packet play by file and plays stopping signaling agreement data packet; Described media protocol data packet comprises video media-data agreement data packet, audio media data agreement data packet and IBP mono-frame video media-data agreement data packet.
CN201510994084.XA 2015-12-25 2015-12-25 A kind of video cloud platform plays the method and device of video CN105635751B (en)

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