[jmarshall]

First off, thanks for taking the time for posting the pictures - I know it's time consuming to get it frame accurate, and you've got it perfectly.

The most obvious difference in the shots is a difference in the colour balance - I suspect we're using different YUV->RGB coefficients.

The second obvious difference is the mplayer shots appear sharper than the XBMC shots. This could be due to differences in scaling at two points (and may well also be due to the colour conversion as well):

1. The scaling itself (i.e. video frame size -> output frame size)
2. The alignment of the output frame size onto the screen (pixel alignment problems).

The settings you use for mplayer, and version information etc. would be most useful.

EDIT: Also, what film is it (exact version) as it'll be useful to get some comparison shots from the xbox version, which has had much more effort put in to the output stages, and has both mplayer and the dvdplayer built in.

Also: Was there any scaling in the snapshots before posting? If so, I'll throw you an address to send the originals to - they may show more differences that may be useful for pinpointing the problem.

Cheers,
Jonathan