[MPlayer-users] How To: best way to rescale

[Ken Bass]

I need to rescale several videos. What is the best way to do that without
recoding the entire video, but maintaining quality?

I have tried "ffmpeg -i <src.xxx> -s WxH src_new.xxx"

where 'W' and 'H' are the new width and height. I  try to keep the same
aspect ratio as the original.

When I do this, the new video is much poorer quality.

TIA. Any help greatly appreciated.

ken