You have a file on your PC that appears to be a data file but you believe it is a video…correct?
[B]Try this: display hidden extensions…then change the extension to .avi[/B]
To do this, go to Settings > Control Panel > Folder Options > View and [U]uncheck[/U] “hide extensions for known file types”
Now you will see the abc123.DAT file. Right-click and rename it abc123.avi
This can be played with any standard player (VLC or GOM are best) and something like Nero will put it onto a disc to play in your stand-alone player.