Multimedia signal transmission method and device

Abstract

The invention discloses a method and a device for multi-media signal transmitting. The method for the multi-media signal transmitting includes the steps: carrying out encoding on multi-media signals to be transmitted to form audio code data, video code data and video enhancement layer code data, carrying out packaging on the audio code data, the video code data and the video enhancement layer code data, confirming contents to be transmitted according to user bandwidth which is fed back and selecting code data to be transmitted from packaged data according to the contents to be transmitted, confirming an inserting positon of forward error correction data according to the feedback user bandwidth and feed back user packet loss probability and enabling the forward error correction data to be inserted into the code data at the corresponding position, and transmitting various code data in proportion under the condition that the code data to be transmitted contains the video enhancement layer code data. The method and the device for the multi-media signal transmitting is capable of guaranteeing that video base layer data reaches user-ends preferentially under the condition of network jitter and packet loss, and capable of guaranteeing that the capability of resisting the network jitter can be strongest when video-on-demand is carried out.

Description

technical field [0001] The present invention relates to the technical field of mobile Internet, in particular, to a multimedia signal transmission method and device. Background technique [0002] With the popularization of mobile Internet applications, the coverage of 3G networks has been continuously expanded and popularized, and the business volume of mobile video has also been continuously expanded. At present, using mobile phones to watch videos has become one of the main functions of mobile phones, but the biggest disadvantage of mobile phones is that the bandwidth is still not wide enough, and there are often problems with network disconnection or poor signal, which can easily lead to video pauses during playback, and video pauses. It is an important reason that affects customer experience. [0003] At present, the most widely used video encapsulation format on the mobile Internet is the 3GP encapsulation standard, and the H.264 protocol is mostly used for video compr...

AI Technical Summary

Problems solved by technology

Generally, the terminal will create a buffer of a certain size internally to deal with the instability of the mobile network, but it can only solve part of the jitter problem. Therefore, the SVC (ScaledVideoCoding, layered video codec) algorithm has appeared, and a code stream can Including different resolutions and frame rates, data with appropriate resolutions and frame rates can be sent according to the user's bandwidth. This encoding method brings a good solution to mobile video services, but if the transmission design of the server According to the original mode of file encapsulation, only a set of encoding method is updated. The real effect of this encoding method is not ideal. When the network is suddenly interrupted or the signal is poor, there will also be pauses.

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