FFMPEG  is a “A complete, cross-platform solution to record, convert and stream audio and video.” ¹

Install ffmpeg

While ffmpeg only provides the source code, there are installers for Windows, Mac, and Linux on the ffmpeg.org download page 

ffmpeg Snippets

Export frames of video with 4 zeros

ffmpeg -i input.mp4 %04d.jpg

Convert mp4 to avi

ffmpeg -i input.mp4 output.avi

Export only Keyframes ffmpeg -skip_frame nokey -i input.mp4 -vsync 0 -r 30 -f image2 keyframes-%02d.png

Export every n frames ffmpeg -i input.mp4 -select=not(mod(n\,13) -q:v 2 -vframes -o frame%03d.jpg ffmpeg -i input.mp4 -vf "select=not(mod(n\,30))" -fps_mode vfr img_%03d.jpg

Trim Video ffmpeg -ss 00:01:00 -to 00:05:00 -i input.MP4 -c copy output.mp4

References