Following are some of the movie formats with file extensions and their description:

1) .3mm - 3D Movie Maker Movie

2) .aep - After Effects Project

3) .amv - Anime Music Video File

4) .asx - Microsoft ASF Redirector File

5) .avb - Avid Bin File

6) .gvp - Google Video Poiner

7) .lsf - Streaming Media Format

8) .m4e - MPEG-4 Video Format

9) .mjp - MJPEG Video File.

10) .rm - Real Media File

11) .siv - Sonic Imaging Video File