[MPlayer-users] Mencoder segfaults with DivX4

Michael Niedermayer michaelni at gmx.at
Thu Feb 14 22:40:02 CET 2002


Hi

On Thursday 14 February 2002 19:43, René Bartsch wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> MPEG4 compression ever needs a resolution which is a multiple on 16, as for
> MPEG4 uses sqares of  16 to 16 pixels for the motion compensation.
RTF(mpeg4 std)
mpeg4 supports 16x16 & 8x8 based motion compensation

it doesnt need the size to be a multiple of 16, imho mpeg4 does support odd 
sizes, but iam no sure

> This is also for DivX 4.xx! If you use values not dividable by 16, there
> can  be a huge loss of quality.
RTF(mpeg4 std) section 7.6.1 
i dunno about divx4

[...]

Michael




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