Use 25 FPS for maximum quality video, then slow down
Use 25 FPS for maximum quality video, then slow down

This avoids frame losses. Example at <https://secure.flickr.com/photos/l0b0/6837168824/in/photostream>, using only 21 photos.

Based on <http://giantdorks.org/alain/set-frame-rate-of-a-60p-video-to-24p-to-achieve-lossless-slow-motion-playback/>.

sukhmel/linux.scripts,sukhmel/linux.scripts