PS & TS

Program stream (PS or MPEG-PS)

Program stream is a container format for multiplexing digital audio, video and more.
Program streams are used on DVD-Video discs and HD DVD video discs, but with some restrictions and extensions.

PS流是一种容器格式.

• Filename extension
  .mpg, .mpeg, .m2p, .ps

• Internet media type
  video/MP2P, video/MP1S[1]

• Type of format
  Media container

• Container for
  Audio, video, data

• Extended to
  VOB, EVO, MOD

• Standard
  ISO/IEC 11172-1,[2]
  ISO/IEC 13818-1,[3]
  ITU-T H.222.0[4]
  [5]

Program streams are created by combining one or more Packetized Elementary Streams (PES), which have a common time base, into a single stream.
It is designed for reasonably reliable media such as disks, in contrast to MPEG transport stream which is for data transmission in which loss of data is likely.

PS主要用于播放或编辑系统.
TS主要用于数据传输.

Program streams have variable size records and minimal use of start codes which would make over the air reception difficult, but has less overhead. Program stream coding layer allows only one program of one or more elementary streams to be packaged into a single stream, in contrast to transport stream, which allows multiple programs.

PS容器中可存放的格式:

MPEG-2 Program stream can contain MPEG-1 Part 2 video, MPEG-2 Part 2 video, MPEG-1 Part 3 audio (MP3, MP2, MP1) or MPEG-2 Part 3 audio.[7]
It can also contain MPEG-4 Part 2video, MPEG-2 Part 7 audio (AAC) or MPEG-4 Part 3 (AAC) audio,[7]
but they are rarely used.

MPEG transport stream (MPEG-TS, MTS or TS)

TS is a standard container format for transmission and storage of audio, video, and Program and System Information Protocol (PSIP) data.[3]
It is used in broadcast systems such as DVB, ATSC and IPTV.

• Filename extension
  .ts, .tsv, .tsa

• Internet media type
  video/MP2T[1]

• Type of format
  Media container

• Container for
  Audio, video, data

• Standard
  ISO/IEC 13818-1, ITU-T Recommendation H.222.0[2]

Perferences:
https://en.wikipedia.org/wiki/MPEG_program_stream
http://blog.csdn.net/beyond0824/article/details/19618929
https://en.wikipedia.org/wiki/MPEG_transport_stream