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.

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The Moving Picture Experts Group

What are the assumptions of the MPEG-4 timing model?

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For applications involving real-time transmission, the timing model adopted by MPEG-4 assumes a constant end-to-end delay from the output of the encoder to the input of the decoder. This is only done so that a well defined and verifiably correct model is employed. It does not mean that MPEG-4 content cannot be transmitted over variable delay networks.