Get all frames from .mov video
If you're comfortable using the command line this can be done using ffmpeg:

ffmpeg -i movie.mov -y -f image2 -c:v mjpeg %03d.jpg


This will write out every frame of the input movie movie.mov as a JPEG named 001.jpg, 002.jpg, ...

If you expect there to be more than 1000 frames you might change the format string of the output filename (%03d.jpg) to include more zeros. For example to have it use a 5 digit filename you would use %05d.jpg.