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Adaptive video transcoding gateway having multiple transforming functions

A conversion function, self-adaptive technology, applied in the direction of digital video signal modification, TV, electrical components, etc., can solve the problem of not guaranteeing high video quality, and achieve the effect of easy loading and removal, good video quality, and low coupling.

Inactive Publication Date: 2005-09-14
ZHEJIANG UNIV
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] In video application systems such as VOD, a variety of network accesses with different conditions are generally allowed to request video data at the same time, but because the pre-encoded source video has high video quality and high bit rate, the client can accept Video streams usually cannot guarantee high video quality due to transmission channel limitations or processing capabilities of end devices

Method used

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  • Adaptive video transcoding gateway having multiple transforming functions
  • Adaptive video transcoding gateway having multiple transforming functions
  • Adaptive video transcoding gateway having multiple transforming functions

Examples

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] Reference attached figure 1 , an adaptive transcoding gateway system structure with multiple transcoding functions, the following steps are adopted:

[0031] If the control module (2) detects that the source video information itself is suitable for transmission on the target network, then there is no need to do any processing on the video information, the video transcoder (5) does not work, and the video is directly sent to the transmission channel;

[0032] The video stream in the source video first passes through the decoder (1), where the decoder performs decoding in the DCT domain for the video stream encoded based on macroblocks and DCT transformation, that is, only through variable length decoding VLD and inverse quantization processing. Enter the core part of the video transcoder (5) through the bit stream of partial decoding;

[0033] An automatic chan...

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Abstract

This invention discloses an adaptive revolving code gateway with many switching functions including a decoder partly decoding a source video information, a channel automatic detection module for automatically detecting the state of a connection channel when a user accesses, a customer end configuration enquiry module inquiring the state of an end device by a simple communication protocol of the revolving code network and end device, a control module receiving network channel information tested by the automatic detect module and end device information enquired by the inquired module to analyze and arbitrate the information and turn it to input revolving code parameter, a video revolving device processing the source video in many ways.

Description

technical field [0001] The present invention relates to video information transcoding technology, in particular, relates to a method that can be adapted to adapt source video in a heterogeneous network environment according to different network bandwidths, channel bit error rates, and video information processing and display capabilities of end devices. It is an adaptive video transcoding gateway with multiple conversion functions that can be converted into video streams suitable for transmission and display to adapt to narrower transmission channels and the access of end devices with weaker processing and display capabilities. Background technique [0002] Due to the differences in various multimedia video and audio encoding formats and the multimedia communication network is composed of different network structures and protocols, a multimedia communication method that can span heterogeneous networks is required in many cases. [0003] For example, in a video on demand (VOD...

Claims

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Application Information

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IPC IPC(8): H04N19/40H04N19/44
Inventor 邢卫鲁东明孙钢
Owner ZHEJIANG UNIV
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