[MPlayer-users] Expand to display-corrected aspect
tack at sault.org
Wed Sep 21 04:52:32 CEST 2005
I'd like to expand to an aspect ratio that takes into account the
display ratio and compensates for that.
For example, if I have a video whose frame size is 720x354 with an
aspect of 2.41, the display size of that movie is 854x354. I would like
to expand this video such that its display size is 4:3, not the frame
size. This means what I want is:
expand width = 720 (native frame width)
expand height = 354 * 2.41 / (4/3) = 640
So for this video, I want -vf expand=720:640. The frame will be
expanded to this size, and scaled to 854:640 by hardware (which is 4:3).
-vf expand=:::::3/4 doesn't work, as it makes the frame size itself 4:3
and doesn't take into account the display size. So for this example,
-vf expand=:::::3/4 would expand to 720:540, which would then get scaled
to 854x540 (which is not 1.33:1).
Does anyone know the required incantation to enchant MPlayer into
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