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Method, device and system for controlling media transmission

A media transmission and control method technology, applied in the media field, can solve the problems of high encoding output bit rate of the encoder, inability to improve the quality of online video recording and broadcasting, and affect the quality of online video recording and broadcasting, so as to achieve the effect of improving the recording and broadcasting quality

Inactive Publication Date: 2011-06-29
HUAWEI DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the process of realizing the recording and broadcasting of the above-mentioned online video, the inventors found that there are at least the following problems in the prior art: when the conference video is transmitted in real time, when the texture of the video image is relatively complex and the amount of motion is large, the encoder on the MCU side Higher encoding output bitrate
Because the existing technology directly saves the video image stream with poor encoding quality in the above-mentioned online video as the recording content, the video quality after recording and broadcasting of the online video is also poor, which affects the recording and broadcasting quality of the online video, and cannot be recorded in the online video. Improving the recording and broadcasting quality of the online video on the basis of the real-time playback quality of the online video

Method used

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  • Method, device and system for controlling media transmission
  • Method, device and system for controlling media transmission
  • Method, device and system for controlling media transmission

Examples

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Embodiment 1

[0076] The embodiment of the present invention assumes that the application scenario is recording an online meeting video in a video conference, and the encoding method adopted is a sex-to-noise ratio layered encoding method. The following uses the above application scenario as an example to introduce a media stream transmission control method in detail, such as Figure 6 As shown, the method includes the following steps:

[0077] 601. Set the target coding parameters of the real-time playback video, such as: target coding bit rate, target average quantization step size or target signal-to-noise ratio, and process the original video image according to the above-mentioned target coding parameters of the real-time playback video that have been set Encoding results in a base layer video stream.

[0078] 602. Set target encoding parameters for recording and playback videos, such as target encoding bit rate, target average quantization step size, or target SNR, where the target en...

Embodiment 2

[0110] In the embodiment of the present invention, taking the recording of online video as an example when the encoding method is a multi-channel encoding method, a media transmission control method is described in detail, as shown in Figure 10 As shown, the method includes the following steps:

[0111] 1001. Set the target coding parameters of the real-time playback video, such as: target coding bit rate, target output frame rate, target display resolution, etc., and process the original video image according to the above-mentioned target coding parameters of the real-time playback video that have been set Encode to obtain the first video stream for real-time playback.

[0112] 1002. Set target coding parameters for recording and playback video, such as: target coding bit rate, target output frame rate, target display resolution, etc., where the target coding parameters for recording and playback video are better than those for real-time playing video. According to the abov...

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Abstract

The invention discloses a method, device and system for controlling media transmission, relating to the technical field of medium and solving the problem that the quality of media code streams which is obtained by directly carrying out recorded-broadcast on the media code streams for real-time broadcasting is lower. The method is comprises the following steps: encoding an original media file to a first media code stream and a second media code stream, wherein the quality of the second media stream is higher than that of the first media code stream; directly sending the first media stream to a receiving end; caching the second media code stream; and sending the cached second media code stream to the receiving end when a redundant bandwidth exists in a transmission network. The other method comprises the following steps: receiving the first media code stream and the second media code stream sent by a sending end; broadcasting the received first media code stream; and storing the received first media code stream and second media code stream, or storing the received second media code stream. The embodiment of the invention is mainly used for the technical field of medium.

Description

technical field [0001] The present invention relates to the field of media technology, in particular to a media transmission control method, device and system. Background technique [0002] In order to save the media code stream transmitted in real time, it is usually necessary to record the media code stream. For example, online video recording and broadcasting can record and save video data for real-time viewing on the Internet and online on-demand video sources, such as video conferencing and digital TV, for subsequent viewing. The aforementioned online videos generally need to be encoded and compressed before being transmitted. The encoding quality of video images, such as clarity and fluency, is generally affected by network bandwidth. [0003] In the prior art solution, the recording and broadcasting of online video directly saves the video code stream played in real time as the content of recording and playback. For example: in a video conference, terminal A and te...

Claims

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Application Information

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IPC IPC(8): H04N21/266H04N21/234H04N21/44
Inventor 伍文华
Owner HUAWEI DEVICE CO LTD
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