Photo4D can only process sequential PPM (true color) or PGM (gray scale) files for motion tracking.
A video converter is provided in order to convert MPEG or AVI video files to sequential PPM or PGM files. To invoke the converter, select from the Utility menu [Utility|Video Converter].
The names of the MPEG or AVI video files must follow the file name conventions.
It is recommended that you preview the videos before convertion. Find the section that contains the subject's movements that you want to capture. Write down the start and end frame numbers for all the videos. This will make it easy for you to convert the relavent frames only. The sequential PPM/PGM files are uncompressed and therefore take a lot of disk space.