Making videos with FFmpeg

The videos I've made with the built in Igor commands never turned out great, but I've had good luck using Igor to make the frames and then calling a second program called FFmpeg to convert the frames into a movie.  This ipf creates a user interface for calling FFmpeg through Igor.  It only gives the user access to a few of the many features of FFmpeg, but it has worked great for the types of videos that I have made (a few minutes long and embedded in Powerpoint or uploaded to Youtube).  The zip file contains the ipf, an example ipf for making frames, as well as the read me pdf.