Abstract
Common video transmission system includes the following work like video collection and encoding of sending end, network transmission and reception, decoding and analysis of receiving end. This paper mainly focuses on elaborating and concluding principles and related techniques involved in video transmission system, such as rate control, transmission control mechanism, video retrieval, intelligent video analysis and error processing of video etc. In conclusion, it points out existing problems of video transmission techniques at present and future development direction of the researches.
Highlights
As application of network multi-media increases gradually nowadays, network video transmission has become a quite important research task and been able to applied to various fields like security and protection monitoring, web TV and video conference
The process of video processing is shown as follows: firstly, the sending end carries out video collection and encoding for related videos; videos are transmitted by network; decoding and related video analysis are implemented at the receiving end
Basic principle of rate control (RC) algorithm is that it tries to adjust variation of code rate, which is results in changes in images, in order to make them adapt to limited channel bandwidth under the condition that stable image quality is ensured
Summary
As application of network multi-media increases gradually nowadays, network video transmission has become a quite important research task and been able to applied to various fields like security and protection monitoring, web TV and video conference. The process of video processing is shown as follows: firstly, the sending end carries out video collection and encoding for related videos; videos are transmitted by network; decoding and related video analysis are implemented at the receiving end. Work of the sending end involves video collection, encoding and decoding. Transmission control refers to data flow control and congestion controls which are performed because there are network bandwidth fluctuations, when video data is transmitted over the network. After the receiving end has received video data, it will implement playback or do related work like video retrieval and video analysis further according to users’ specific demands. This paper will summarize relevant techniques involved in video transmission and processing
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