Trev wrote:

Could be lots of things. In what format are they you say Mpeg but is it Mpeg
1, 2 or 4 that later will have an avi icon.
Maybe the other devices don have the correct codec for the format

Not 100% sure, properties merely show mpeg.

They were created with WinTV and I think they use mpeg2

Media player is not used much so may be missing some codecs but the
Iomega media player had the latest firmware so I assume is just not able
to deal with the files properly.

Geoff Lane