Ok, its been awhile since I did this and I can't recall whether it was Convid2daph or DVD2Daph I used but I do know it was not that hard to rip the video for DL2 using some utility or other.
Unfortunately, though video quality was good, I did not find the game playable at all whether using the CVS version of Daphne or using the Digital Leisure DVD Video discs. The real game was tough but this was ridiculous and seems to me after you get to the scene with the spider about 3 scenes into the game there simply is no right move.
You may want to peruse the Daphne boards and see if progress has been made I'm guessing my experiment was about a year ago and at the time it did not seem to be something anyone was actively trying to fix so good luck.