Other Mac Video-Help Needed.

[Patrice Maire]

I am attempting my first 'music video' using actual footage from Avatar. I've done one before but using stills set to music this time I have the capability (or so I thought) to capture video from the movie on my computer and create a video using other music.

IF anyone else out there has a newer mac or is familiar with them can you please message me? I can do video clips, but getting those clips to my desktop or imovie is the issue.
I'm really frustrated about this (as most tortured artists are) I am currently writing down the lyrics to the song and putting in video cues so once that is done I'll be ready to start editing the actual scenes. I really need to get this figured out.

Rarrrr! Help!