On Wed, Jan 06, 2010 at 08:00:03PM +0100, Kov?cs Zolt?n wrote: > > You also did not say whether it must be rendered on the video frames, can > > be a separate overlay or whatever. In the later case just overlaying a > > partially > > transparent window without giving it any relation to MPlayer could be a > > simpler > > solution. > > I also have an application which is capable for something like that, except > that a solid background is used instead of transparency. It is written in > python-gtk, using one of the demos as an example. But I did not think it is > possible to define a partially transparent window. Is it possible under X? I do not know if there is a nicer/less hackish solution, but a compositing window manager like compiz certainly can do it, so e.g. a compiz plugin might be a possibility. Since you already have an application doing it without transparency, you could just install compiz and configure it to always display that window at e.g. 50% transparency (though I don't think that's quite the effect you want, you would want only some parts to be transparent. There might be a simple way to do it, but I am the wrong person to ask about these details). In principle it should even allow to read the current background if desired, though there would probably be a delay to adapt to changes.