none said:

All the options Chewtobacca mentioned are possible. But for now this thread is for researching issues related to seamless branching/storylining

From what I have read about seamless branching, is just like what chewie said, its very hard to pull off with the player actually liking the end result. The people I have talked to about it said that they have done it thru scenetist (or whatever its called) but the actual execution of it makes players studder. I believe it has to do with how the video is muxed and stored on the DVD, with the branched part not being in the same location of the media on the disc and instead being at the end of the disc or something of that sort

I dont know how the studios do it to where its flawless, but I know that Ive seen a few of them retail seamless branching DVDs not be so flawless in execution as well