Method for vision audio frequency stream data recovery ISO media file

A media file and streaming data technology, applied to color TV parts, TV system parts, TVs, etc., can solve the problems of being unable to exchange and use systems of multiple manufacturers, and cannot provide users with downloading, etc., to facilitate secondary distribution Effect

Active Publication Date: 2008-06-18
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the custom file format is a proprietary format, which cannot be exchanged between multiple manufacturers' systems, and cannot be provided for users to download and play locally.

Method used

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  • Method for vision audio frequency stream data recovery ISO media file
  • Method for vision audio frequency stream data recovery ISO media file
  • Method for vision audio frequency stream data recovery ISO media file

Examples

Experimental program
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Embodiment Construction

[0038] The ISO-based media file format in the present invention includes but is not limited to the following: MP4 file format defined by ISO14496-14, AVC file format defined by ISO14496-15, and 3GPP2 file format defined by 3GPP TS26.244. In the present invention, files based on the ISO media file format are collectively referred to as "ISO media files", and the mentioned video and audio stream data specifically refers to video and audio stream data transmitted through RTP (Real-time Transport Protocol).

[0039] Usually ISO media files are composed of several boxes. Taking 3GPP files as an example, a 3GPP file is composed of several boxes (atoms) based on mpeg4. Among them, the most common ones are:

[0040] File format: ftyp box, which is equivalent to the file header, indicating the protocol version used by the file and other information;

[0041] Media atom: mdat box, which stores audio, video and other data. A general file has at least two mdatboxes, one for audio and one ...

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PUM

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Abstract

The invention discloses a method used in the visual and audio stream data ISO recovery media file, which relates to file format conversion and is invented for solving the problem that the private format file is unable to play locally and unable to be exchanged among a plurality of manufacturers. The invention defines the bulk division method by acquiring the media rail number, the ID of every media rail, the time scale, and the load type of the visual and audio stream data, and builds a media bulk chain meter and a fluidizing bulk chain meter for every media rail; every bulk of every rail is generated sequentially, and the media rail bulk and the fluidizing rail bulk of the visual and audio stream data are generated correspondently and synchronously; the whole media atom is written in after the generation of all the bulk in all the rail; the film atom message is restored and the file is written in according to the information in the bulk chain meter and the information in a conversational description protocol packet. The invention can realize the transmission from the private format file to the ISO standard format file.

Description

technical field [0001] The invention relates to a media file format conversion method, in particular to a method for recovering ISO media files from video and audio stream data. Background technique [0002] Generally, the streaming media file format includes the MP4 file format defined by ISO14496-14, the AVC file format defined by ISO14496-15, the 3GPP file format defined by 3GPP TS26.244, and the 3GPP2 file format defined by 3GPP2 C.S0050-0. Streaming media files (video and audio streaming data) in these formats support local playback of media players and remote on-demand through streaming media servers. The video and audio streaming data mentioned in this article refers to video and audio streaming data transmitted through RTP (Real-time Transport Protocol) . [0003] In the fields of streaming media, video conferencing, and video surveillance, there are usually the following requirements: [0004] 1. The streaming server needs to store the video and audio data packets...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/24H04N5/00H04L29/06
Inventor 阮亚平王志英
Owner ZTE CORP
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