On Fri, 17 Mar 2006, Steven M. Schultz wrote:
> You can also use 'y4mscaler' to crop the data. IF the data really
> is "420jpeg" then something like this, placed just before the
> encoder (mpeg2enc) is what you need - it will crop and convert
> at the same time:
The command I gave was, from "finger memory" (force of habit ;))
not quite correct.
>> on the top and bottom (ie "mplayer -vf crop=720:470" removes them).
y4mscaler -I active=720x472+0+4 -O sar=src -O size=720x480 -O chromass=420mpeg2
will leave the black bars. Omit the "-O sar=src":
y4mscaler -I active=720x472+0+4 -O size=720x480 -O chromass=420mpeg2
BUT that will corrupt the file. The black bars will be replaced with
an incorrect aspect ratio since you're upscaling vertically from
472 to 480. True, it's only ~2% but that's enough to make circles
into ovals.
Until yuvdeinterlace is updated in cvs the better thing to do is just
leave the stream interlaced. I guess it depends if oblateness is
better/worse than interlacing :)
Cheers,
Steven Schultz
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