Using two angles does not mean using half the bitrate. It's a little un-intuitive, but multi-angle bitrates work like this: If you're using two angles, the MAXIMUM bitrate for EACH angle of video plus all audio plus all subpictures must not exceed 8.0 Mbps. Figure on subtracting about another 1.2 Mbps for each additional angle. So for a two-angle encode, you can still have a high maximum bitrate. references? evidence?As for the seamless branching guide on doom9, it refers to shrinking an exisiting, branching, retail DVD-9 down to a DVD-5 while retaining the branching, rather than a guide on creating seamless branching in general.

Very true.