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Method, apparatus and system for implementing transmission stream time mapping

A time-mapping and transport-streaming technology, applied in image communication, selective content distribution, electrical components, etc.

Inactive Publication Date: 2011-04-13
NANTONG DONGFANG SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In view of this, the embodiment of the present invention provides a transport stream time mapping method, device and system to solve the problem of inaccurate time mapping relationship in existing solutions

Method used

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  • Method, apparatus and system for implementing transmission stream time mapping
  • Method, apparatus and system for implementing transmission stream time mapping
  • Method, apparatus and system for implementing transmission stream time mapping

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Experimental program
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Embodiment 1

[0033] Referring to Fig. 4, it is a flow chart of the first method embodiment of the present invention, including:

[0034] Step 401: the client sends a media play request to the media server;

[0035] The request may or may not include the playback start position. When the client request does not include the playback start position, the actual playback position is carried in the response message.

[0036] Step 402: After the media server receives the media playback request from the client, it feeds back a response message containing the media time stamp to the client;

[0037] Step 403: The client calculates the time mapping relationship of the transmission stream by using the media time stamp and the actual playback position.

[0038] As mentioned above, the actual playback position may refer to the playback starting position requested by the client, or may refer to the media server carried in the response message. In the following, the embodiment will be described mainly ...

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Abstract

The invention discloses a method for implementing a transport stream time mapping comprising: transmitting a media request to a media server, and a client receiving the media server feedback reply message containing a media time stamp; calculating a time mapping relation of the transport stream by using the media time stamp and a real play position. Even under the packet loss condition, the invention can guarantee the client to calculate an exact mapping relation, further accurately calculate the play position of the transport position, and optimize user's experience. Corresponding to the method, the invention also provides the client for implementing the transport stream time mapping, the media server and a system.

Description

technical field [0001] The present invention relates to the technical field of audio and video processing of the Moving Picture Experts Group (MPEG), in particular to a method, device and system for realizing time mapping of MPEG2 transport streams. Background technique [0002] The MPEG2 transport stream (Transport Stream, TS) format is defined in the system part of the MPEG2 standard (ISO / IEC 13818-1), which describes how to combine basic streams of video, audio and other data into one or more A code stream specification suitable for transmission, that is, ISO / IEC13818-1 is formulated for the wide application of video and audio. [0003] Figure 1 is a simplified schematic diagram of the MPEG2 transport stream system in the prior art. Digital signals such as audio and video are compressed and encoded to form an elementary stream (Elementary Stream, ES). This ES cannot be directly stored or transmitted, but must be transmitted into a specific The packager (packetizer is als...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/236H04N21/8547H04N21/6437H04N21/437
Inventor 冯江平张毅
Owner NANTONG DONGFANG SCI & TECH