[MPlayer-users] scaling issues with x264

[Alexander Roalter]

when I encode a video using x264, i'm not able to specify an aspect 
ratio (at least AFAIK), so I'm better off resizing the video to the 
correct aspect during encoding.

but when I specify

mencoder video.avi -o output.avi -ovc x264 -oac copy -x264encopts pass=1 
-vf scale=640:480

I get

...
VDec: vo config request - 480 x 352 (preferred colorspace: Planar YV12)
VDec: using Planar I420 as output csp (no 1)
Movie-Aspect is 1.36:1 - prescaling to correct movie aspect.
Unsupported format Planar I420
Unsupported format Planar I420
swScaler: Unknown format is not supported as input format
Couldn't init SwScaler for this setup
FATAL: Cannot initialize video driver.

Exiting...


Mencoder is a fresh svn from yesterday (dev-SVN-r19918-4.0.2), though my 
x264 is about a month old...