You are correct, we output BGR ordering. As XviD's colourspace routines were based on FourCC demands, they output RGB24/32 data as demanded by the FourCC code: I'm not sure how this works on other platforms, but since no *nix people have ever spoken up about it, I guess it's the same ordering for RGB video there as well. Or it's never been tried before.. mplayer seems to support both RGB and BGR orderings. -h