Screen captures of DVDs (need program to replace Capture Me)

[t-rexwins]

I take tons of screen captures from DVDs for work and used to use Capture Me to get around Mac's copyright prevention of taking DVD screen captures with its built-in program (my use of these images for work is protected under Fair Use laws, by the way). Capture Me doesn't work on OS versions from Mountain Lion on, so now I need to find a replacement program that's fast and easy (given the volume of screen captures I make).

I know VLC does screen captures, but I'd prefer to still use the main DVD Player program with an easy select-capture-area-and-click program that disregards DVD copyright, as Capture Me did.

Any suggestions? Thanks!