www.makemkv.com

Thanks - that was the answer I have expected (unfortunately). So I will dig into the batch usage. Fortunately most of the iso files just contain the main movie.

Do I understand correctly that I have to open one instance of makemkvcon per conversion file to have MultiMake MKV to work? I have a bunch of hard disks with each approx. 100 iso files to convert.

Thanks for your answer...

Klaus