Video code stream filtering method and filtering node

A filtering method and video technology, which can be used in TV, pulse modulation TV signal transmission, analog security/charging systems, etc., and can solve problems such as low efficiency and lack of versatility.

Inactive Publication Date: 2007-05-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0021] The present invention provides a video code stream filtering method and filtering node in the multimedia communication process to

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  • Video code stream filtering method and filtering node
  • Video code stream filtering method and filtering node
  • Video code stream filtering method and filtering node

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Embodiment Construction

[0104] The present invention provides a video code stream filtering node (Node) arranged at a suitable position in the network. The filtering node can realize automatic filtering and manual filtering of content in streaming video, and can simultaneously filter based on URL or similar The shallow filtering method for filtering.

[0105] Below at first provide the automatic filtering method of video content of the present invention, the automatic filtering method of the present invention is to use the I frame in the video code stream as the object to be detected, after decoding the I frame, restore the I frame image and carry out the identification of harmful content, specifically There are two methods, one is to decode and restore all I frames, and the other is to decode and restore the first I frame in each scene. In the video code stream, the header of the data packet containing the I frame is correspondingly provided with an I frame identifier, which can be identified.

[0...

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Abstract

The invention relates to a video flow filter method and relative filter node, wherein said method only needs to decode part data of video flow, to recognize based on view divide recognize technique. The invention is based on present harmful content automatic recognize technique, to automatically recognize and filter, matched with man-operated recognize mechanism. And it also uses filter technique based on URL. And the filter node comprises video flow delay module, switch module, I frame checking/decoding module, content recognize module and judging module based on mark classify standard. The invention reduces decoded data amount and reduce complexity.

Description

technical field [0001] The invention relates to multimedia communication technology, in particular to a video code stream filtering method and filtering node in the multimedia communication process. Background technique [0002] Streaming Media, as a basic form of multimedia communication, has derived numerous forms of multimedia communication services: conference TV / videophone, IPTV, VOD, instant messaging and so on. Therefore, streaming media will become the basic form of communication on NGN (Next Generation Network). Especially in recent years, with the rapid rise of IPTV (Internet Protocol Television, IP TV) services at home and abroad, the application of streaming media on the network is also developing rapidly. [0003] A class of services on streaming media, such as IPTV and VOD (Video on Demand, video on demand), both function to provide video and audio content. The range of content is very wide, including film and television programs, news, sports games, concerts...

Claims

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Application Information

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IPC IPC(8): H04N7/24H04N7/16
CPCH04N21/4542H04N21/44209H04N7/163
Inventor 罗忠
Owner HUAWEI TECH CO LTD
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