[MPlayer-users] Confused about dsize/expand/scale

[Jon Drukman]

I'm trying to output videos with a constant height but with the width 
changing based on the input aspect ratio.  Also it needs to always map 
to square pixels as the destination player does not support non-square 
pixels.


for example, if the input file is 720x480 16:9 the output should be 656x368.

i can't get it to work, though... no matter what i do it mencoder always 
retains the pixel aspect ratio of the original file, so it outputs the 
video at 560x368.  mplayer plays it fine but the destination player is 
adobe flash, which doesn't.

what filter chain do i need to do what i want?

-jsd-