Quote:
Originally Posted by DamianJ
mp4 is a container. you can have different formats inside that container.
what exactly is your question?
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Not to be confused with mpeg-4 part 10 aka avc, which is a codec standard. .
mp4 files, or mpeg-4 part 14, are container files formalizing the Quicktime container format which normally contain mpeg-4 (avc) video plus streaming hints.
DivX and xvid are implementations of an older part 2 type codec specification. DivX specifically is a reverse engineered implementation of the old Microsoft codec that was supposed to be mpeg-2 compatible but is in fact broken and not standards compliant.