[MPlayer-users] Re: AVI->DVD: Problem understanding expand and scale
Thomas Heuving
heuving at gmx.de
Sat Oct 8 09:15:11 CEST 2005
Nico Sabbi schrieb am Thu, 06 Oct 2005 10:10:04 +0200:
>> mencoder -oac lavc -ovc lavc -of mpeg -mpegopts format=dvd -vf
>> expand=672:378:16:4,dsize=16/9,scale=720:576,harddup
>> -lavcopts aspect=16/9:acodec=ac3:abitrate=192:vcodec=mpeg2video:
>> vrc_buf_size=1835:vrc_maxrate=9800:vbitrate=5000:keyint=18
>> -o test.mpg -endpos 100 my.avi
>
> why not simply -vf scale=-1:-10,expand=720:576,harddup
> to keep the original width, or
that works, but I want some black borders as most DVD-Players seem
to cut some of the original content in order to present the material
on the Television. I think that's the reason why commercial content
tends to have black borders too (?).
Less complicated is
scale=-1:10:::::pal (or ntsc)
so you don't have to expand by yourself.
> -vf scale 720:-10,expand=720:576,harddup to resize the width to 720
> and the height according to the A/R ?
This gives bad distortions.
> unnecessarily complicated
But it seems to be necessary to do two invokations, as I didn't find
and nobody mentioned a working example of putting black borders and do
a scaling in one go.
--
Thomas Heuving
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