I have recently ripped a selection of films and tv boxsets from my DVD collection to add to my ASUS HD7 via SD Card, using the software MakeMKV & Handbrake for conversion.
In total I have created 15 files, after transferring these to my SD Card & accessing on the tablet only 7-8 of which working while the rest present me with the error 'Can't play this video'

Does anyone know why this would be happening or a way of fixing this?
The exact settings needed in Handbrake for this device would also be helpful if anyone knows as I've currently tried 3 variations with no luck.

All files were ripped consecutively using the same setting template, and the weirdest thing is how some files were taken from the same disc yet a few can be watched and the rest can't..

Hopefully someone can help!