So, I extracted 2 audio streams, 1 video stream and 1 .ssa sub file from 1 .ogm file... I re-encoded 1 of the .ogg audio streams to mp3 and re-encoded it together with the video file and he .ssa sub file, but the subs turn out 'opaque' or see-thru, which is a bit annoying.. Wondering if this is because of the settings of the .ssa file or that I can do something about it.