CN1992886A - Streaming media server with bandwidth adapting function - Google Patents
Streaming media server with bandwidth adapting function Download PDFInfo
- Publication number
- CN1992886A CN1992886A CN 200510135452 CN200510135452A CN1992886A CN 1992886 A CN1992886 A CN 1992886A CN 200510135452 CN200510135452 CN 200510135452 CN 200510135452 A CN200510135452 A CN 200510135452A CN 1992886 A CN1992886 A CN 1992886A
- Authority
- CN
- China
- Prior art keywords
- bandwidth
- module
- medium
- server
- mobile device
- 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
Abstract
The invention relates to a flow media server with bandwidth adaptive function, wherein it comprises server flow protocol module, bandwidth analyzing module, bandwidth selecting module, document analyzing module, and media sending module. The mobile device timely reports received bandwidth state and media receiving state to the flow protocol module; the flow protocol module sends said information to the bandwidth analyzing module and finds the media bandwidth and sending speed, the media sending module sends it. The invention can automatically adjust the sending speed and code bandwidth of media document via the network state and media receiving state, to improve relative play effect.
Description
Technical field
The present invention relates to a kind of communication apparatus technical field, particularly a kind of media delivery server.
Background technology
Streaming Media appears at the fixed the Internet network at first.Method at multimedia messagess such as transmission over networks audio frequency and video mainly adopts download and two kinds of transmission plans of streaming at present.For download scenarios, because big file often needs a large amount of memory capacity, be subjected to the restriction of the network bandwidth simultaneously, download and usually can spend several minutes even a few hours, postpone very big.For stream transmission, files such as sound, image or animation are play while downloading, when time-base medias such as sound are play on client computer, the remainder of file continues to download in server on the backstage, not only making the startup time-delay be ten times, hundred times ground shortens, nor need too big buffer memory capacity, avoided the user must wait for the shortcoming that just can watch after whole file is all downloaded from the Internet.
The Core Feature of mobile flow medium service system is to provide the online broadcast and the downloading and playing function of Streaming Media, online broadcast also to support live simultaneously and two kinds of service forms of program request by mobile communications network to the mobile subscriber.Streaming Media is meant that data such as video, sound carry with RTP, and transmits to destination from the source end with the form of continuous stream, receives the multimedia application that certain data cached back just can play back at destination.The mobile flow medium technology is playing audio-video and content of multimedia in real time.Can shorten greatly and start time-delay, avoid the user must wait for that whole file all downloads the shortcoming that just can watch after finishing from the server source.The files in stream media of playing need not reduce the requirement to the client stores space in client storage, has reduced the demand of buffer memory capacity yet.Because files in stream media is in client storage, thereby solved the Copyright Protection of media file to a certain extent.
Because medium can be play after being sent to playback terminal, so the business that is called as " playing " of streaming media service image while downloading.In fact stream mode is different with downloading mode, and downloading mode need download to playback terminal this locality fully with medium, just can play, need the user to wait for the long period, Comparatively speaking, stream mode gives user's impression more timely, and the user does not need to wait as long for.
At streaming media server media content is sent to stream mode in the mobile device terminal process, ideal situation is that the transmission bandwidth maintenance is constant, and the media content encoded bandwidth of transmission is more smaller than transmission bandwidth.The good playing stream media content of playback terminal like this.But actual conditions are then really not so.Network environment changes through regular meeting, and when the Network Transmission bandwidth was lower than the media coding bandwidth, congested, packet loss and transmission delay will take place, and playback terminal will occur interrupting playing or mosaic phenomenon, and the media play that influence user is experienced.
Under wireless network, because moving of mobile device terminal, the decay of wireless signal transmission and wireless bandwidth are taken by voice or the higher business of other priority at any time, and the wireless link bandwidth fluctuation that makes mobile device terminal use is big, the transmission error rates height.For carrying out of mobile flow medium service increased difficulty, how to make full use of air bandwidth, for providing the Streaming Media of high-quality smoothness, the user experiences, and be the problem to be solved in the present invention.
Summary of the invention
Technical problem to be solved by this invention has been to provide a kind of streaming media server with bandwidth adaptation function.Streaming media server of the present invention can provide the function of bandwidth adaptation according to the actual behaviour in service of mobile device terminal user and network system.The user is when the playing stream media content, streaming media server can be surveyed current actual bandwidth of user and decoding terminals situation, sending to the user, ensure that the user can both see not having the broadcast of interrupting under different bandwidth situation then with content near the compression of actual bandwidth speed.
For solving the problems of the technologies described above, the invention provides a kind of streaming media server with bandwidth adaptation function, comprise server flows protocol module, bandwidth analysis module, bandwidth selection module, document analysis module and medium sending module, wherein:
The server flows protocol module, be used to handle the communication of streaming media server and mobile device terminal, to send to the bandwidth analysis module from bandwidth conditions and the medium reception situation that mobile device terminal receives, and will return to mobile device terminal from the media content that the medium sending module returns;
The bandwidth analysis module, the bandwidth conditions and the medium that are used for sending according to the server flows protocol module receive status analysis transmission medium bandwidth and transmission speed, and the medium bandwidth result who analyzes is sent to bandwidth select module, the transmission speed result who analyzes is sent to the medium sending module;
Bandwidth is selected module, is used for to document analysis module request media content, and the media content that the medium bandwidth result who sends according to the bandwidth analysis module returns the document analysis module carries out bandwidth and switches, and the media content after will switching returns the medium sending module;
The document analysis module, streaming media server and medium provide the interface of server, and being used for provides server to obtain corresponding media content from medium, and selects module to return the media content of acquisition to bandwidth;
The medium sending module, the media content that transmission speed that returns according to the bandwidth analysis module and bandwidth select module to return turns back to the server flows protocol module with media content.
In the described streaming media server, the bandwidth analysis module can regularly receive bandwidth conditions and the medium reception situation that mobile device terminal reports by the server flows protocol module.
In the described streaming media server, the server flows protocol module is after receiving bandwidth conditions and medium reception situation, be sent to the bandwidth analysis module, the bandwidth analysis module can be determined the medium bandwidth and the transmission speed of transmission according to bandwidth conditions and medium reception situation; Adjust the medium bandwidth if desired, then can switch, and send by the medium sending module by the different bandwidth that bandwidth selects module to carry out same media content.
In the described streaming media server, the medium that bandwidth detection is obtained from mobile device terminal receive situation and can comprise: the average idle ratio and the freebuf of the average idle ratio of buffering area, decoding back buffering area reduce speed before the decoding of mobile device terminal.
In the described streaming media server, the bandwidth analysis module compares the mean value of current bandwidth and preceding twice bandwidth, does not change if the difference of the mean value of preceding twice bandwidth and current bandwidth in the specification error scope, does not then need to carry out bandwidth; If surpass the error range of setting, then analysis result can be sent bandwidth and select module to carry out the bandwidth switching.
In the described streaming media server, if bandwidth detection reports the average idle ratio of mobile device terminal buffering area greater than a set point, and transmission bandwidth is higher than the medium bandwidth, and the bandwidth analysis module can improve transmission speed guaranteeing to send under the prerequisite of bandwidth less than transmission bandwidth.
In the described streaming media server, if the bandwidth analysis module reports the mobile device terminal freebuf to reduce the preset proportion that speed meets or exceeds the data transmission speed, then bandwidth selects module can adjust the medium bandwidth, and will adjust the result and send bandwidth and select module to carry out the bandwidth switching of same media content.
In the described streaming media server, the wideband condition that bandwidth detection is obtained from mobile device terminal can comprise: the bandwidth guaranteed of network, maximum bandwidth and maximum network time-delay.
The present invention has the streaming media server of bandwidth adaptation function can adjust media file transmission speed and encoded bandwidth automatically according to network condition and medium reception situation, has guaranteed the result of broadcast of media file in mobile device terminal.
Description of drawings
Fig. 1 is according to the described modular structure figure with streaming media server of bandwidth adaptation function of the embodiment of the invention;
Fig. 2 is according to the described workflow diagram with streaming media server of bandwidth adaptation function of the embodiment of the invention.
Fig. 3 is according to the described working frame flow chart with streaming media server of bandwidth adaptation function of the embodiment of the invention.
Embodiment
Streaming media server its working principles of the present invention is: streaming media server regularly obtains from mobile device terminal and receives buffering area situation and decoded state.Streaming media server is carrying out fast and in the slow transmission process, according to these information, is adjusting transmission speed, and the assurance medium are play with best effect in mobile device terminal.The quick transmission here is meant and increases the media coding bandwidth that sends, perhaps strengthens the speed that sends packet.Slow transmission is meant and reduces the media coding bandwidth that sends.Normal transmission speed is meant the medium transmission speed of determining according to the medium bandwidth.
According to above-mentioned principle, the course of work of streaming media server of the present invention is:
1, the bandwidth detection of mobile device terminal obtains current bandwidth conditions by wireless module, and bandwidth conditions comprises: the bandwidth that can guarantee, maximum bandwidth, maximum time delay.These information will be carried to streaming media server in the 3GPP-LINK-CHAR of RTSP request message.The stream protocol processing module of streaming media server receives these information.
2, streaming media server is told mobile device terminal: server possesses the various code rate information of bandwidth adaptation function and the selected media content of mobile device.When mobile device and streaming media server were set up the stream protocol session, streaming media server carried above-mentioned information in the response message of discribe.
3, mobile device terminal sends the buffer size of oneself and the buffer time of expectation to streaming media server.Can adopt SETUP, the 3GPP-ADAPTATION field of SET_PARAMETER message sends.Streaming media server returns same 3GPP-ADAPTATION field information and represents to confirm in response message.
4, in carrying out the Media Stream transport process, mobile device terminal is regularly returned the idle size of buffering area of mobile device terminal to streaming media server, play time-delay, the sequence number of the next RTP bag of medium bag correspondence to be decoded, the band decoded media wraps in the serial number information in the RTP bag.These information are transmitted as using bag in the RTCP bag.The stream protocol processing module of streaming media server receives these information.
5, mobile device terminal receiving media stream and adopt when playing buffering area mechanism, buffering area to be divided into buffering area before the decoding, decoding back buffering area has two timers, a decoding timer, a broadcast timer simultaneously.The mobile device terminal buffering area is put into the preceding buffering area of decoding after receiving medium stream information, when the decoding timer arrives, decodes, and with content placement decoding back buffering area, after the broadcast timer arrives, from the back buffering area of decoding, take out content, in playing module, play.
6, after the stream protocol processing module on the streaming media server is received information, be sent to the bandwidth analysis module, the bandwidth analysis module is according to wireless bandwidth information, the decoding speed of mobile device terminal, and the freebuf size is determined the medium bandwidth and the transmission speed that transmit.Adjust the medium bandwidth if desired, then the different bandwidth of selecting module to carry out the identical content of same medium by bandwidth switches.The medium sending module sends.
As shown in Figure 1, one embodiment of the invention is a kind of modular structure figure of streaming media server, and wherein streaming media server 201 comprises:
Server flows protocol module 101, bandwidth analysis module 102, bandwidth are selected module 103, document analysis module 104, medium sending module 105.
Server flows protocol module 101, be used to handle the communication of streaming media server and mobile device terminal, to send to bandwidth analysis module 102 from bandwidth conditions and the medium reception situation that mobile device terminal receives, and will return to mobile device terminal from the media content that medium sending module 105 returns;
Bandwidth is selected module 103, be used for to document analysis module request media content, the media content that the medium bandwidth result who sends according to bandwidth analysis module 102 returns document analysis module 104 carries out bandwidth and switches, and the media content after will switching returns medium sending module 105;
As shown in Figure 2, the workflow diagram that has the streaming media server of bandwidth adaptation function for the embodiment of the invention.The idiographic flow step of embodiment of the invention streaming media server work is:
1, the stream protocol module of streaming media server sends to the bandwidth analysis module with the bandwidth relevant information of receiving.
2, the bandwidth analysis module is according to certain rule, and decision medium bandwidth value sends to bandwidth and selects module.
3, according to buffer state, adjust transmission speed if desired, the bandwidth analysis module sends to the medium sending module with transmission speed information.
4, bandwidth selects module to document analysis module request media content, can be that the bandwidth of same media content is switched, also the same bandwidth content of same media content.
5, the document analysis module is returned media content to the bandwidth analysis module.
6, the bandwidth analysis module is transmitted to the medium sending module with the media content that returns.
7, the medium sending module calculates transmitting time according to transmission speed, and transmitting time arrives, and media content is sent.
As shown in Figure 3, the working frame flow chart that has the streaming media server of bandwidth adaptation function for the embodiment of the invention.
It is example that the working frame flow chart of present embodiment begins with the stream media protocol session, setting up flow media session, carry out in the streamed process of medium, transmission bandwidth variation and the variation of mobile device terminal buffering area etc. appear, the information that streaming media server reports according to mobile device terminal is selected suitable media content to send to mobile device terminal and is finished bandwidth adaptation.Idiographic flow and step are as follows:
(step 301) mobile device terminal sends DISCRIBE message to streaming media server, and streaming media server returns the various bandwidth information of the selected medium of mobile device terminal in SDP file.SDP file form such as 3GPP PSS R6 5.3.3 joint regulation.If the SDP file that streaming media server returns does not comprise the content of 3GPP PSS R6 5.3.3 joint regulation, show that not support dynamic bandwidth adaptive, then do not need subsequent step.
(step 302) mobile device terminal is in follow-up SETUP message, carry 3GPP-LINK-CHAR and 3GPP-ADAPTATION field, wherein the 3GPP-LINK-CHAR current bandwidth information of carrying is that wireless module from mobile device terminal obtains, comprise: maximum bandwidth, can guarantee bandwidth, maximum delay.The 3GPP-ADAPTATION field information of carrying comprises the buffer time of existing buffer size and expectation.The form of these two fields meets 5.3.2.1 and the 5.3.2.2 standard of 3GPP PSS R6.
The bandwidth guaranteed that the bandwidth analysis module of (step 303) streaming media server selects mobile device terminal to submit to is a medium bandwidth to be selected, bandwidth selects module to select the information of the media content of appropriate bandwidth by the document analysis module from media content, in the SETUP response message, return to mobile device terminal by the stream protocol module, can select the immediate media content of bandwidth therewith.The media content of absolute value minimum of medium bandwidth and the difference that can guarantee bandwidth just.
(step 304) mobile device terminal receives the SETUP response message, sends PLAY message, begins to carry out media play.In the media play process, the bandwidth detection of mobile device terminal is regularly obtained current bandwidth from wireless module.
Simultaneously, when the bandwidth detection of mobile device terminal sends the RTCP bag at needs, send message to buffer zone module and obtain buffering area situation and decoded state, adopt the RTCP bag that these information are sent to streaming media server.And in RTSP message, regularly reporting bandwidth information to streaming media server, the bandwidth detection of mobile device terminal sends to streaming media server with bandwidth information.The stream protocol module adopts the 3GPP-LINK-CHAR field of SET_PARAMETER method to carry current bandwidth information.
The stream protocol module of (step 305) streaming media server sends to the bandwidth analysis module with the information of 3GPP-LINK-CHAR field, the bandwidth analysis module obtain current bandwidth and preceding twice bandwidth and mean value, if the mean value of current bandwidth and medium bandwidth are in the specification error scope, then not needing to carry out bandwidth changes, if surpass the error range of setting, then need to carry out bandwidth and change.Currency is as the criterion with the average bandwidth value.Only select the mean value mode in this example, also can adopt other algorithms.
The bandwidth analysis module sends to bandwidth with the expected bandwidth value and selects module, and informs the current playing time mark, and time mark adopts NPT (normal play time) form.Bandwidth selects module according to medium bandwidth information and current reproduction time, send message to the document analysis module, obtain corresponding media content, the document analysis module selects module to return the media content pointer to bandwidth, bandwidth selects module to send the media content pointer to the medium sending module, the medium sending module is transmitted to the stream protocol module according to the transmission speed of setting with the media content pointer, and the stream protocol module sends to mobile device terminal with media content.
Under the normal condition, the medium sending module according to npt time interval of former and later two medium bags for being as the criterion, after receiving the media data packet that will send, timer is set, the difference of the transmitting time between two packets that send before and after timer length guarantees equated with the npt time difference of two medium bags.
When mobile device terminal reports the buffer empty free space bigger, and transmission bandwidth is higher than under the situation of medium bandwidth, can shorten between former and later two medium bags transmission at interval, but guarantee to send bandwidth less than transmission bandwidth.Can simply get the quotient that the size of transmission bandwidth and packet divides exactly, the transmission between the medium bag was quotient reciprocal second at interval like this.According to this time interval transmission medium bag.
When mobile device terminal reports the freebuf size too little, account for 20% for too little with idle ratio in this example, streaming media server returns to the transmission of normal condition.Increase if comprise decoding delay in the information that mobile device reports, and freebuf minimizing excessive velocities, reach 50% of data transmission speed with growth rate in this example and be as the criterion.Expression is the too low reason of mobile device disposal ability, then needs to adjust the medium bandwidth.
Adopt the media content of lower bandwidth to continue to send to mobile device terminal, reduce excessive velocities if still find the mobile device terminal freebuf, and decoding delay is still increasing, then further reduce the medium bandwidth that sends, up to guaranteeing that the mobile device terminal freebuf keeps dynamic equilibrium under normal transmission speed.Just mobile device terminal freebuf size mean value in a period of time is constant.
Claims (8)
1, a kind of streaming media server with bandwidth adaptation function is characterized in that, comprises server flows protocol module, bandwidth analysis module, bandwidth selection module, document analysis module and medium sending module, wherein:
The server flows protocol module is used for the communication with mobile device terminal, will send to the bandwidth analysis module from bandwidth conditions and the medium reception situation that mobile device terminal receives, and will return to mobile device terminal from the media content that the medium sending module returns;
The bandwidth analysis module, the bandwidth conditions and the medium that are used for sending according to the server flows protocol module receive status analysis transmission medium bandwidth and transmission speed, and the medium bandwidth result who analyzes is sent to bandwidth select module, the transmission speed result who analyzes is sent to the medium sending module;
Bandwidth is selected module, is used for to document analysis module request media content, and the media content that the medium bandwidth result who sends according to the bandwidth analysis module returns the document analysis module carries out bandwidth and switches, and the media content after will switching returns the medium sending module;
The document analysis module, streaming media server and medium provide the interface of server, and being used for provides server to obtain corresponding media content from medium, and selects module to return the media content of acquisition to bandwidth;
The medium sending module, the media content that transmission speed that returns according to the bandwidth analysis module and bandwidth select module to return turns back to the server flows protocol module with media content.
According to the described streaming media server of claim 1, it is characterized in that 2, the bandwidth analysis module regularly receives bandwidth conditions and the medium reception situation that mobile device terminal reports by the server flows protocol module.
3, according to the described streaming media server of claim 1, it is characterized in that, after the server flows protocol module receives bandwidth conditions and medium reception situation, be sent to the bandwidth analysis module, the bandwidth analysis module is determined the medium bandwidth and the transmission speed of transmission according to bandwidth conditions and medium reception situation; Adjust the medium bandwidth if desired, then the different bandwidth of selecting module to carry out same media content by bandwidth switches, and is sent by the medium sending module.
4, according to the described streaming media server of claim 1, it is characterized in that the medium reception situation that bandwidth detection is obtained from mobile device terminal comprises: the average idle ratio and the freebuf of the average idle ratio of buffering area, decoding back buffering area reduce speed before the decoding of mobile device terminal.
5, according to the described streaming media server of claim 1, it is characterized in that, the bandwidth analysis module compares the mean value of current bandwidth and preceding twice bandwidth, does not change if the difference of the mean value of preceding twice bandwidth and current bandwidth in the specification error scope, does not then need to carry out bandwidth; If surpass the error range of setting, then analysis result is sent bandwidth and select module to carry out the bandwidth switching.
6, according to the described streaming media server of claim 1, it is characterized in that, if bandwidth detection reports the average idle ratio of mobile device terminal buffering area greater than a set point, and transmission bandwidth is higher than the medium bandwidth, and the bandwidth analysis module improves transmission speed guaranteeing to send under the prerequisite of bandwidth less than transmission bandwidth.
7, according to the described streaming media server of claim 1, it is characterized in that, if the bandwidth analysis module reports the mobile device terminal freebuf to reduce the preset proportion that speed meets or exceeds the data transmission speed, then bandwidth selects module to adjust the medium bandwidth, and will adjust the result and send bandwidth and select module to carry out the bandwidth switching of same media content.
According to the described streaming media server of claim 1, it is characterized in that 8, the wideband condition that bandwidth detection is obtained from mobile device terminal comprises: the bandwidth guaranteed of network, maximum bandwidth and maximum network time-delay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510135452 CN1992886A (en) | 2005-12-28 | 2005-12-28 | Streaming media server with bandwidth adapting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510135452 CN1992886A (en) | 2005-12-28 | 2005-12-28 | Streaming media server with bandwidth adapting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1992886A true CN1992886A (en) | 2007-07-04 |
Family
ID=38214768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510135452 Pending CN1992886A (en) | 2005-12-28 | 2005-12-28 | Streaming media server with bandwidth adapting function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1992886A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130794A (en) * | 2011-02-28 | 2011-07-20 | 上海聚欣网络科技有限公司 | Method, device and equipment for measuring user uploading bandwidth |
| CN102158690A (en) * | 2011-05-23 | 2011-08-17 | 北京自动测试技术研究所 | Remote multichannel real-time video monitoring system |
| CN102946389A (en) * | 2012-11-01 | 2013-02-27 | 上海文广互动电视有限公司 | Media service pushing system |
| CN103402122A (en) * | 2013-06-24 | 2013-11-20 | 中国联合网络通信集团有限公司 | Control method and device for mobile streaming media service |
| CN105657460A (en) * | 2014-11-14 | 2016-06-08 | 华为终端（东莞）有限公司 | Streaming media playing method and device and mobile terminal |
| CN107592342A (en) * | 2017-08-23 | 2018-01-16 | 北京小米移动软件有限公司 | Information-pushing method and device |
-
2005
- 2005-12-28 CN CN 200510135452 patent/CN1992886A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130794A (en) * | 2011-02-28 | 2011-07-20 | 上海聚欣网络科技有限公司 | Method, device and equipment for measuring user uploading bandwidth |
| CN102130794B (en) * | 2011-02-28 | 2014-12-31 | 上海聚欣网络科技有限公司 | Method, device and equipment for measuring user uploading bandwidth |
| CN102158690A (en) * | 2011-05-23 | 2011-08-17 | 北京自动测试技术研究所 | Remote multichannel real-time video monitoring system |
| CN102946389A (en) * | 2012-11-01 | 2013-02-27 | 上海文广互动电视有限公司 | Media service pushing system |
| CN103402122A (en) * | 2013-06-24 | 2013-11-20 | 中国联合网络通信集团有限公司 | Control method and device for mobile streaming media service |
| CN105657460A (en) * | 2014-11-14 | 2016-06-08 | 华为终端（东莞）有限公司 | Streaming media playing method and device and mobile terminal |
| CN105657460B (en) * | 2014-11-14 | 2019-03-08 | 华为终端（东莞）有限公司 | Flow media playing method, device and mobile terminal |
| CN107592342A (en) * | 2017-08-23 | 2018-01-16 | 北京小米移动软件有限公司 | Information-pushing method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100966447B1 (en) | Data streaming system and method | |
| US9042449B2 (en) | Systems and methods for dynamic transcoding of indexed media file formats | |
| US20110088076A1 (en) | System and Method for Media Adaptation | |
| CN1478349A (en) | Transmitting and receiving real-time data | |
| JP2002511216A (en) | System for adaptive video / audio transport over a network | |
| CN1491381A (en) | Method and system for buffering streamed data | |
| CN1402143A (en) | Flow control method based on feedback of client terminal | |
| WO2014011848A2 (en) | Signaling and processing content with variable bitrates for adaptive streaming | |
| CN101242359A (en) | Dynamic code rate allocation method and packet domain stream media server | |
| WO2006058203A9 (en) | Method and apparatus for adaptive buffering | |
| EP2752017A1 (en) | Method and apparatus for adaptive transcoding of multimedia stream | |
| CN1833391A (en) | Reducing effects caused by transmission channel errors during a streaming session | |
| CN101009824A (en) | A network transfer method for audio/video data | |
| CN1992936A (en) | Mobile terminal equipment with bandwidth adapting function of streaming media | |
| CN108063953A (en) | The code-transferring method of video code conversion gateway, monitoring system and video code conversion gateway | |
| US20050120038A1 (en) | Data structure for data streaming system | |
| CN1852429A (en) | Video-code-flow grouped transmission method and system | |
| KR20100106383A (en) | Apparatus and method for simulcast over a variable bandwidth channel | |
| CN1148931C (en) | Method for implementing stream medium transmission based on real time transmission protocol and transmission control protocol | |
| CN1992886A (en) | Streaming media server with bandwidth adapting function | |
| MX2013013373A (en) | Method for dynamic adaptation of the reception bitrate and associated receiver. | |
| CN100589436C (en) | The method that a kind of dynamic bandwidth is adaptive | |
| CN1992891A (en) | Bandwidth adapting system of streaming media | |
| CN1166205C (en) | Image transmission device and image transmission method | |
| CN1992892A (en) | Bandwidth adapting method of streaming media |
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 |
Open date: 20070704 |