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Segmented decoding method for scrambled network video streams

A technology of network video and decoding method, applied in the field of disordered segmentation decoding, can solve the problems of incomplete decoding and inability to restore video stream, etc., and achieve the effect of improving the reception rate and the decoding rate.

Active Publication Date: 2014-12-10
NAT COMP NETWORK & INFORMATION SECURITY MANAGEMENT CENT +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing processing methods can only skip out-of-order video streams, resulting in incomplete decoding and unable to restore the entire video stream

Method used

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  • Segmented decoding method for scrambled network video streams
  • Segmented decoding method for scrambled network video streams

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Embodiment Construction

[0017] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0018] The network video stream out-of-order segment decoding method proposed by the present invention is a network video stream-based out-of-order segment decoding method, through local buffering, segment processing, etc., to correctly process the out-of-order video stream to the greatest extent.

[0019] like figure 1 As shown, it is a schematic diagram of the overall flow of the out-of-order segment decoding method of the present invention, which specifically includes the following steps:

[0020] Step 1: Capture the video data packets transmitted from the network and save them in the cache. The specific step one includes the following steps 1.1 to 1.3.

[0021] Step 1.1, capture the data packet transmitted by the network, analyze the data packet, if the data packet is video data, then perform step 1.2, otherwise continue to capture the data pack...

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Abstract

The invention provides a segmented decoding method for scrambled network video streams and relates to the technical field of processing of the video streams. The method includes: capturing video data packets transmitted from a network, setting a cache for each video stream, sequentially storing the data packets at corresponding positions, and starting video decoding when consecutive data packets reach an appointed size; adopting an FFmpeg technique for decoding of data blocks, modifying corresponding contexts during decoding, and enabling FFmpeg to continue decoding by means of disguising. An independent printed circuit board with a plurality of acceleration units is adopted for decoding, the acceleration units are implemented by means of the FFmpeg technique, and accordingly parallel decoding can be realized; no matter in which sequence the network video streams are received, the video streams can be spliced and decoded to the maximum extend by taking the data blocks as units according to the segmented decoding method which is supportive to parallel decoding of various data streams; by adoption of the segmented decoding method, available frame count receiving rate and decoding rate of the video streams are increased.

Description

technical field [0001] The invention relates to the technical field of video stream processing, in particular to an out-of-order segmentation decoding method based on network video streams. Background technique [0002] In the field of network video stream processing, traditional processing schemes generally process video streams sequentially. In actual application, due to the characteristics of P2P, segmented download, and UDP protocol, out-of-order video streams exist. Currently existing processing methods can only skip out-of-order video streams, resulting in incomplete decoding and unable to restore the entire video stream. Contents of the invention [0003] The object of the present invention is to correctly process out-of-order video streams to the greatest extent, and proposes a network video stream out-of-order segment decoding method. [0004] The out-of-order segmentation decoding method of network video stream provided by the present invention comprises two ma...

Claims

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Application Information

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IPC IPC(8): H04N21/44H04N21/443H04N19/436
Inventor 包秀国周游袁庆升谢铭童晓民周康成唐剑琪邹学强
Owner NAT COMP NETWORK & INFORMATION SECURITY MANAGEMENT CENT
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