[MPlayer-users] question on mplayer overlays using XV

[Rich Felker]

On Sat, Aug 25, 2007 at 11:49:10PM -0700, Vinay Reddy wrote:
> On a similar note, there is no XV_COLORKEY when I do an xvinfo. How
> does mplayer manage to show text over video (and other OSD, like seek
> bars, volume bars, etc.) without the presence of colorkeys?

The text is rendered into the same buffer as the video, not overlaid
with colorkey. Colorkey is actually useless for this because it's
purely an on/off thing (no continuously-variable alpha channel) and
thus text would look disgustingly sharp at the edges rather than
blending onto the movie.

Rich