> Well.. whether or not UDF is used on the disc, the DVD decoding is done as a > bit stream.. I have seen the source code, read a little of the official > standards book (wow, two pages worth of it and I got a headache) Just going > by what I saw.. Terminator running with overlay support within BeOS sure all media encoding is done as a stream. however, you have to know where to find the stream. that's why UDF is important. on nearly all videos you don't have just one stream, you have multiple files and multiple streams for different things. in order, to properly play DVD's you have to support UDF to access the stream. know where it starts and such. the DVD standard encompasses much more than the mpeg2 stream. it specifies silly things like finding files in the VIDEO_TS directory and knowing what files to open first and when to open other files and such. it's really quite important to playing a DVD video correctly. apologies if i came across as an ass. just trying to point out why UDF is important :) -soco