A program selection method for playback of mpeg TS files

Abstract

The invention provides a program selection method for MPEG TS file playback. The method comprises the steps of firstly, conducting an analysis on a PAT list and a PMT list in an MPEG TS file, obtaining all program information and flow information in programs in the file, and conducting classification on the flow information according to the programs; then, respectively conducting checking on each program according to the flow information of each program, wherein the checking at least comprises checking on integrality of basic flow of each program; again conducting grading on each program according to the checked result; finally confirming the successive sequence, capable of being selected, of the programs according to the graded results. With the program selection method, demultiplexing efficiency of the MPEG TS file can be improved, and hardware resources, such as a CPU and an internal storage can be saved.

Description

technical field [0001] The invention relates to multimedia technology, in particular to a program selection method for MPEGTS file playback. Background technique [0002] The MPEG (Moving Pictures Experts Group, Moving Pictures Experts Group) protocol stipulates that the MPEGTS (Transport Stream, Transport Stream) file is composed of TS packets, each TS packet has a fixed length of 188 bytes, and is divided into two parts: the header and the payload. The packet header mainly includes a sync byte, PID (PacketIdentifier, packet identifier) ​​and other information. The sync byte is used to indicate the start of a TS packet (the value is 0x47), and the PID indicates the type of the TS packet. For example: the video stream in a program consists of some TS packets with the same PID, and the receiving end only needs to receive the TS packets with this PID to combine to obtain the video of the program. The packet load is the actual content of the packet. Depending on the specific s...

AI Technical Summary

Problems solved by technology

[0017] 1. In method 1, the program selected by the media player may have only one video stream or the selected video stream has been encrypted, which will cause abnormal playback and bring a bad experience to the user

[0018] 2. Method 2 will increase the file opening time due to the method of traversing all programs one by one

[0019] 3. Method 3 will select the program specified by the user to play, but because the user cannot know the relevant information of all the programs in the file before playing, blind selection will bring difficulties to the user's selection, and there are the same problems as method 1

[0020] 4. The efficiency of demultiplexing of multi-program files by current multimedia players is not high enough, especially for files with relatively high video resolution and relatively high bit rate, there is a problem of low demultiplexing performance

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