Welcome to the ISO/IEC JTC 1/SC 29/WG 11 web site

also know as MPEG, the Moving Picture Experts Group.

The MPEG acronym is also used to indicate a suite of

ISO/IEC digital media standards developed by this JTC 1 Working Group.


The Moving Picture Experts Group

What should I use timing information for?MPEG-4

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There are two kinds of timing information that can be conveyed in elementary streams. The first set is used to convey the sender's time base to the receiver (clock references) and the second contains the desired time (in units of the sender's time base) for specific events such as the desired decoding or composition time for portions of the encoded audio-visual information. With this timing information, the inter picture interval and audio sample rate can be adjusted at the decoder to match the encoder's inter picture interval and audio sample rate for synchronized operation.