CN104639992A - Streaming media technology based mobile video playing system - Google Patents
Streaming media technology based mobile video playing system Download PDFInfo
- Publication number
- CN104639992A CN104639992A CN201310571446.5A CN201310571446A CN104639992A CN 104639992 A CN104639992 A CN 104639992A CN 201310571446 A CN201310571446 A CN 201310571446A CN 104639992 A CN104639992 A CN 104639992A
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- China
- Prior art keywords
- design
- video
- streaming media
- media
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Classifications
-
- 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]
- H04N21/60—Network 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
- H04N21/63—Control 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
- H04N21/643—Communication protocols
-
- 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]
- H04N21/60—Network 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
- H04N21/63—Control 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
- H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
A streaming media technology based mobile video playing system is composed of a communication module, a decoding module, a display module and the like. Video play is realized by the audio-video coding and decoding technology, the data transmission technology and the display technology. The communication module hands over streaming media data of a server end to the decoding module by session control, the decoding module analyzes and decodes streaming data, attentively, the decoding process is divided into two parts of video decoding and audio decoding, and then the display module outputs audio-video information. The attached figure is a level graph of a streaming media player.
Description
Technical field
Computer software fields; Streaming Media field; Medium field
Background technology
Coding and decoding technology; Data transmission technology; Image processing techniques;
Summary of the invention
Mobile video Play System based on stream media technology is made up of communication module, decoder module, display module etc., realizes video playback by the coding and decoding technology of audio frequency and video and data transmission technology and Display Technique.The stream medium data of server end is given decoder module by session control by communication module, decoder module stream data carries out analyzing and decoding, it should be noted that decode procedure is divided into video decode and audio decoder two parts, audio/video information exports by display module subsequently.
Accompanying drawing 1 is the hierarchy chart of DST PLAYER;
Embodiment
A complete stream media system should comprise following part.
(1) coding tools: for creating, catching and editing multimedia data, form stream media format, this can be completed jointly by the computer of band video/audio hardware interface and the Software for producing run on it.
(2) stream medium data.
(3) server: deposit the data with control flow check media.
(4) network: the network being applicable to media transport protocol or RTP.
(5) player: for Client browse files in stream media.
Media services hardware platform: video server sends to corresponding client with the form of video flowing by network interface, the interaction request of customer in response the video information stored within the storage system, ensures that video flowing exports continuously.Video information has synchronism requirement, must play on the one hand, avoid the shake causing picture with constant speed, as mpeg-1 video standard requires with the speed displaying video stream of about 1.5Mb/s.On the other hand, the multi-signal comprised in video streaming must keep synchronous, as dubbing of picture must be consistent with the shape of the mouth as one speaks.In addition, video has the large feature of data volume, its location mode in storage system, directly affects the interactive service that video server provides, as F.F. and the realization of function such as to fall soon.Therefore video server must solve the various requirement that video stream characteristics proposes.After the video flowing request of video server customer in response, read in a part of video data to the specific buffer memory corresponding to this video flowing from storage system, the content then in this buffer memory is sent into network interface and is sent to client.When individual new client asks Video service, server, according to the service condition of system resource, determines whether respond this request.Wherein, system resource comprises the utilization rate etc. of bandwidth, the network bandwidth, memory size and the CPU storing I/O.
Media server software platform: video network application platform comprises media content and makes, issues and administration module, user management module, video server.Content production relates to video acquisition, coding.Issuing module is responsible for program to be submitted to webpage, or video flowing address is mailed to user.Content Management mainly completes video storage, searches; Can file system be used when program is few, when program amount is large, just must organized data base management system.User management may comprise registration and the mandate of user.Content is play by program request or live mode by video server, the situation that, user wide for scope is many, can set up corresponding Distribution Center in different regional centers.
Stream media player for mobile phone is designed to three subdivisions according to modularization principle: communication module, decoder module, display module.The stream medium data of server end is given decoder module by session control by communication module, decoder module stream data carries out analyzing and decoding, it should be noted that decode procedure is divided into video decode and audio decoder two parts, audio/video information exports by display module subsequently.Software module structure is as accompanying drawing 1.
The communication protocol design of client and server, will obtain flow data from server section as the player of client in native system, needs thus to adopt the communication protocol of equity to keep the efficient communication of client and server section.Existing network service is all based on ICP/IP protocol stack, but has real-time due to multimedia messages, and TCP/IP needs more overhead, and time delay is oversize in process of establishing, therefore is not too applicable to transmitting real-time data.Thus, need to build the protocol stack meeting this application and require, to realize the communication function of real time data.Adopt in this application and build the application of RTP/RTCP/RSVP protocol suite on transport layer udp protocol, realize the transmission of multi-medium data; Transmission Control Protocol builds RTSP remote control protocol, realizes controlling client and server and to pass through task.
RTSP transmits two-way control information, data volume little and require transmission reliability, therefore use connection-oriented Transmission Control Protocol on build.RTP and RTCP controls the transmission of end-to-end network data, can select RSVP based on building on UDP simultaneously, and it can be plays thread first reserved a part of resource on network, to a certain extent for the transmission of data flow provides QoS.
Communication module uses between socket and server and sets up real-time contacts, and communication is initiated by client player, controls, and terminates.Player creates RTSP Dialog request, sends data request packet to server.During processing server nonreply situation, player arranges a time-out time, in time-out time, if player does not receive server acknowledge, re-send request may bag, is sent to time-out time always and arrives, if now also do not receive response packet, then point out user's players and server out of touch, require to reconnect.Server uses RTP/RTCP transmitting realtime stream data after checking that whether this RTSP session is effective.
The design of client transmissions buffering area: owing to easily causing delay and jitter in rtp streaming transmitting procedure, and the order of arrival of packet is also stochastic regime in UDP transmitting procedure, in order to as far as possible farthest eliminate delay and jitter and ensure that the order of arrival of packet is correct, we design client buffer district to complete this function.Design buffering area is based on some consideration following:
1) in order to answer the loss of stream data and out-of-sequence, the buffering area of some is needed to realize Flow Control, for correct playing stream media program.
2) determination of buffer size, reasonable disposition client buffer district size has a significant impact systematic function.Buffering area is too little, just there is no enough memory spaces to preserve the packet come late due to network delay shake, can buffer overflow be caused and packet of skimming of having to: buffering area is too large, not only waste valuable system resource, but also Playout delay can be made too large, lose real-time, follow-up data bag even can be caused not processed in time and to be dropped, influential system performance.
Claims (6)
1. based on the composition of the mobile video Play System of stream media technology:
(1) coding tools: for creating, catching and editing multimedia data, form stream media format, this can be completed jointly by the computer of band video/audio hardware interface and the Software for producing run on it;
(2) stream medium data;
(3) server: deposit the data with control flow check media;
(4) network: the network being applicable to media transport protocol or RTP;
(5) player: for Client browse files in stream media;
(6) streaming media service Hardware platform design;
(7) streaming media service Design of Software Platform;
(8) design based on the client of the mobile video Play System of stream media technology and server communications protocol;
(9) based on the client transmissions Buffer Design of the mobile video Play System of stream media technology.
2. according to the composition proposal of each module of right 1 requirement.
3. according to the Streaming Media hardware scheme that right 1 requires.
4. according to the Streaming Media software design scheme that right 1 requires.
5. according to right 1 require client and server communications protocol design.
6. according to the client transmissions Buffer Design that right 1 requires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310571446.5A CN104639992A (en) | 2013-11-15 | 2013-11-15 | Streaming media technology based mobile video playing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310571446.5A CN104639992A (en) | 2013-11-15 | 2013-11-15 | Streaming media technology based mobile video playing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104639992A true CN104639992A (en) | 2015-05-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310571446.5A Pending CN104639992A (en) | 2013-11-15 | 2013-11-15 | Streaming media technology based mobile video playing system |
Country Status (1)
| Country | Link |
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| CN (1) | CN104639992A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112057832A (en) * | 2020-07-28 | 2020-12-11 | 浙江工业大学 | Live-action riding training system based on mobile streaming media technology |
-
2013
- 2013-11-15 CN CN201310571446.5A patent/CN104639992A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112057832A (en) * | 2020-07-28 | 2020-12-11 | 浙江工业大学 | Live-action riding training system based on mobile streaming media technology |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150520 |