You can't even take snapshots of Blu-ray videos when you use PowerDVD and WinDVD. Hollywood demanded that PowerDVD and WinDVD take that function out of their players and both caved in and did it.
The problem is that
PowerDVD and WinDVD use hardware acceleration, which can not be disabled when playing Blu-Ray videos. When hardware acceleration is on, the video is sent to the Video Overlay, so when you use
screen video capture software you just get a black screen.
IMHO the best workaround is to remove any protection from Blu-ray video using
AnyDVD HD. After decrypting your Blu-ray disc you can convert M2TS, MTS videos to any other format. And you can play M2TS, MTS videos using freeware VLC, Media Player Classic.