I don't suppose you have any of HCl's work in progress on that front do you?The WC videos are a vast improvement too. Ideally it would be great to get the 3DO format sorted out as that may or may not fix the compression issues with the reds of the PSX version.
Even better than extracting the 3DO videos for me would be being able to extract the PSX color comm videos from WC3/4. I'd much rather be using those for the remaster but I'm being pulled in so many different directions on this project and don't have any experience with video encoding so I can only guess what I'm looking at. So far I still haven't even extracted the PC comm videos for WC4 (HCl's player only seems to support WC3, I think 4 is the same encoding for the comms and the movies, just without a header).