A method and system for stripping ts transmission streaming media audio and video

A technology for transporting streams, audio and video, applied in the field of set-top boxes, can solve the problem of high cost of set-top boxes, and achieve the effect of reducing data copying and high processing efficiency
CN102984576BActive Publication Date: 2016-06-01四川九洲投资控股集团有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
四川九洲投资控股集团有限公司
Publication Date
2016-06-01

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Abstract

The invention relates to the field of set top boxes and discloses an audio-video stripping method and a system for TS (transport stream) media. The method comprises the steps that 1, a set top box receives and demultiplexes a TS; 2, a basic code stream of a digital television is identified according to PIDs (packet identifiers) of audio data and video data acquired during a demultiplexing course; and 3, If a node of a buffer queue has the audio data, then the node is added to a audio data queue; if the node of the buffer queue has the video data, then the node is added to a video data queue; and if the node of the buffer queue has the audio data and the video data, then the node is added to both the audio data queue and the video data queue. TS data after demultiplexing is subjected to attribute marking, and the audio data and the video data of a single program are stripped and reconstituted according to attributes. The function is completely accomplished by CPU (central processing unit) software and does not require a hardware support. Meanwhile, a shared memory buffer method is adopted, so that data copy is reduced and the processing efficiency is high.
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Description

technical field

[0001] The invention relates to the field of set-top boxes, in particular to a method and system for stripping audio and video from TS transmission streaming media. Background technique

[0002] MPEG-2 is an image compression standard formulated by ISO / IEC / JTC1 / SC29 / WG11. It was developed to meet the comprehensive requirements of digital TV program generation, editing, storage, transmission and reality. It is widely used in digital TV broadcasting and DVD. Digital TV basically uses the MPEG-2 standard for compression and packet transmission, while IPTV also uses the MPEG-2 standard for audio and video in order to be compatible with digital TV broadcast programs. In order to improve bandwidth utilization, the sending end generally multiplexes multiple programs to form a program transport stream (Multipprogram transport stream), referred to as TS transport stream. Demultiplexing. Some of the demultiplexed TS transmission streaming data packets are audio data...

Claims

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