It seems to me that something must be wrong here. I use these
options for mpeg2enc:

... | mpeg2enc -f 8 -b 9500 -q 1 -a 3 -o output.m2v

Well - one thing that's wrong is using -q 1. Known, in some cases, to suffer from DCT/iDCT overflow in the MMX/SSE code. Or are you doing the encoding on an PPC system - the Altivec routines seem to not have the same problem.

Just something you might want to know about the DCT/iDCT overflow thing (you might know it already): I managed to trigger this overflow problem at -q 2 too. So, for braindead encoding purposes, -q 3 is the limit. Maybe this could be mentioned in the BUGS section of the mpeg2enc man page.


Cheers,

Dik


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