Since everyone seems to use their own little codec for video you can’t always view them on your macintosh straight away. I had this problem with my father’s Casio digital camera movie files. It appears that others have complained and Casio has listened. The download and installation instructions can be found here:
Casio AVI Codec for Macintosh
If you have QuickTime PRO it is easy to export the video into a more widely supported format before posting it.
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