Method and system for synchronizing encoding of videos and audios

A synchronization system, audio and video technology, applied in the field of audio and video codec, can solve problems such as difficult debugging, high cost, long development cycle, etc., and achieve the effect of saving user costs

Inactive Publication Date: 2012-10-10
TVMINING BEIJING MEDIA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to propose a method and system for synchronizing audio and video coding aimed at the above technical problems, which can enable users to quickly adjust to adapt to ch

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  • Method and system for synchronizing encoding of videos and audios
  • Method and system for synchronizing encoding of videos and audios

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specific Embodiment approach

[0050] Such as figure 1 Shown, be the specific embodiment of a kind of audio-video encoding synchronization method of the present invention, comprise the following steps:

[0051] Step 101, collecting audio and video signals and separating them into audio frame streams and video frame streams, and storing them in the original audio frame queue and the original video frame queue respectively;

[0052] The audio and video acquisition equipment collects audio and video signals into original audio and video frames, and then separates the audio and video frame data into audio and video frame streams, and saves them in their respective audio and video original frame queues. The audio and video signals can be It is an SDI signal, an AV analog signal, or a TS stream signal or a signal that can be collected by other collection devices.

[0053] Step 102, respectively encoding the data in the original audio frame queue and the original video frame queue to obtain encoded audio frames a...

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Abstract

The invention discloses a method and a system for synchronizing encoding of videos and audios. The method includes firstly acquiring video and audio signals, separating the same into an audio frame stream and a video frame stream, and storing the audio frame stream and the video frame stream into an audio original frame array and a video original frame array respectively; encoding data in the arrays respectively, and obtaining an encoded audio frame and an encoded video frame; simulating a hardware clock to generate respective decoding time label and display time label, and inserting the decoding time label and the display time label into the encoded audio frame and the encoded video frame; comparing values of the decoding time label, alternating, combining and arranging to output synchronous audio and video frames and packaging the same as TS (transport stream), and simultaneously simulating the hardware clock to generate program clock reference to be inserted into the TS. The method can synchronize encoding of the videos and the audios, and cost of users can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of audio and video encoding and decoding, in particular to an audio and video encoding synchronization method and system. Background technique [0002] The MPEG organization launched the MPEG-2 compression standard in 1994 to realize the possibility of interoperability between video / audio services and applications. The MPEG-2 standard is a compression scheme and system for standard digital TV and high-definition TV in various applications. layer details. Corresponding to different applications, the code stream conforming to the MPEG-2 standard is divided into transport stream and program stream. [0003] In the MPEG-2 standard, in order to synthesize one or more audio, video or other basic data streams into a single or multiple data streams for storage and transmission, it must be repackaged and encoded, in the code stream Also need to insert various time stamps, system control and other information, and f...

Claims

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Application Information

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IPC IPC(8): H04N21/236H04N21/242
CPCH04N21/242H04N21/2368H04N21/8547
Inventor 于江
Owner TVMINING BEIJING MEDIA TECH
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