I cannot download a converted avi file to mp4. I keep getting a message that says “The camera may not support copying files from your computer. Although this device supports video files, it does not support .mp4 files.”
Surely this is an accepted file from Google.
Where are you trying to download it from? Are you trying to copy it from your computer? If so, what operating system are you using?
It may be you need to change the USB connection mode, but it depends what you’retrying to do.
I’ve got a similar message before when copying downloaded video files from my PC to my Nexus 7. Mostly from here!
I tend to ignore the warning and copy the files over anyway, they’re either going to work or not work once on your Nexus 7 so I figure the best thing to do is just try it.
You should see the video files show up in the Google Movies app, or your preferred player of choice (mx player – which claims to play “everything” but I doubt that!).
If they don’t work just delete and try a different format.