Update Movie/Video metatdata

I have some videos that I have encoded myself from DVDs, whenever I pause one of these videos, the 2nd line of the top bar always shows “Unavailable”. I have tried added some meta-data with the title information, but that hasn’t seemed to fix anything.

Is there something I need to do to force OSMC to re-read the metadata and update its database or perhaps I have not put the data into the correct tag, can anyone tell me which tag is being displayed so that I can update the correct one?

The videos are H.264 encoded in a MKV file.

Cheers,
Camz.