[MPlayer-users] Mencoder: How to convert 1440x1080 to 1920x1080 Square pixel and yuv420 to yuv244p

[Reimar Döffinger]

On Sat, Mar 09, 2013 at 10:54:49PM +0100, Karsten Jeschkies wrote:
> I converted the m2t to an image sequence nad used that as an input for
> ffmpeg. However, that screws up the aspect ratio.
> 
> Or should I rather use mencoder to convert to huffyuv and then use the new
> file as an input for ffmpeg?

You should really report the FFmpeg issue to them together with a sample
file.
But otherwise, instead of decoding to images you'd normally use mplayer
with -vo yuv4mpeg which will preserve frame rate and aspect settings,
and ideally you'd stream it to ffmpeg via a pipe to not require so much
disk space.