[M4IF Technotes] generation of mp4 files

[Bill May]

Ivan Dimkovic wrote:
> 1. (Actually, guys from MPEG4IP project would probably give more precise
> answer):  MPEG4IP has several decoders - Xvid decoder used for Simple
> profile, and ISO reference decoder (Microsoft) for all other profiles,
> because (to my best knowledge) Xvid decoder does not support other profiles
> than simple (and maybe advanced simple).  Xvid decoder is used for simple
> profile because it is much faster than unoptimized ISO reference source
> code.
> 
> Xvid encoder should generate ISO compatible elementary bitstreams   (simple
> profile,  or in SigmaDesign's derrivate  even Advanced Simple).

That being me, the version of we use xvid supports a subset of simple profile -
it is missing some tools such as video packets.  We use the ISO reference
code (1999 version, I believe) for all others.
Bill May