Get that information from the instructions or directly from the camcorder manufacturer. Since the videos don't work, that may mean that they are not supported.
You can use another program to convert the videos to an acceptable format (mpg2 or similar). There are several free ones.
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BoilerPlate: To posters who ask for help -- it is nice to thank the volunteers who try to answer your questions !
Anything I post unless stated with a reference is my personal opinion.