Hi Rudolf, > > Only the nodes taking part in such a negotiation should be able to > > limit the options. Ie. if a node cannot do B_YCbCr422 that would be > > understandable, but it's not a general problem. > OK, so I take it I need to look at the mediaplayer I am testing with to > see if that uses nodes that cannot output decoded video in B_YCbCr422 > format. If these nodes are also used for Be's mediaplayer however, they > can do it (or overlay wouldn't be used in practice). The Be player probably doesn't use "full nodes", but only BMediaTrack decoders. The negotiation process for those should be simpler. I helped DarkWyrm once with format stuff, if you want, you can send me the code and I could have a look. Best regards, -Stephan