[MPlayer-dev-eng] [patch][rfc] screenshot. Aspect Ratio, problems

[Jindrich Makovicka]

ObsessiveMathsFreak wrote:
>> Message: 5
>> Date: Fri, 26 Aug 2005 02:10:42 -0400
>> From: Rich Felker <dalias at aerifal.cx>
>>
>> It will just make playback incredibly slow.. Otherwise no problem.
>> Just use -vf scale,screenshot -zoom
> 
> 
> This worked perfectly, also with the vo_png filter. I get it now. I
> think. Software scaling vs Hardware scaling or at least internal mplayer
> scaling vs scaling on output. I know nauzing.
> 
> For some reason the filter needs to be wrapped around two scale filters
> like so
> -vf scale,screenshot,scale
> 
> I have no idea why.

Most codecs work in YUV420 colorspace, while vf_screenshot supports only
RGB24. The scale filters perform the conversion to RGB24 and back.

-- 
Jindrich Makovicka