Jonno,

Firstly, thank you for pointing me to the right thread.
So I don’t have any MKV files. Episodes V and VI are .iso files containing a file called BDMV (which I believe is an AVCHD file) and a certificates folder. Episode IV is just the BDMV. I realise I would need an external Blu-ray burner to write to a Blu-ray output but I thought a SuperDrive could still burn to an AVCHD disc. Is this wrong? I can’t find anything to suggest that Superdrive will burn to a BD. I think I’m getting tangled up in terminology.

Thanks
MTFBWY