Assume a BD-Video directory structure with a 1080p video. It is so boring, that its max datarate is below 10MBit/s, and the entire directory structure takes less than 4.7GB.
Instead of writing this to a BD-R, could it also be written to a DVD-R, and would BD-players run it?
- On the one side, the data rate is lower than the max DVD-Video data rate, so the "DVD-part" of the drive is fast enough, and I'd imagine the player just looks at the directory structure to determine if it's DVD-Video, BD-Video or anything else.
- On the other side, I read everywhere that the BD-Video standard specifies UDF v2.5 as file system. Many players don't care, but for example the Play Station 3 does. Of course, UDF v2.5 could be used for DVDs, too, but if a player checks this, it could also check the media type and refuse to play the movie.