www.makemkv.com

Is this set in a header somewhere? Might I be able to hex-edit the ISO to clear that tag?

Well, the files are NOT encrypted. They play fine in Power DVD 7.

Why would this play in Power DVD and not convert with MKV?

Are there alternatives?

Extracting the files to a folder and attempting to open them (either HVA00001.VTI or DISCID.DAT) with MakeMKV resulted in a sub-set of the same errors: MakeMKV v1.8.7 win(x64-release) started Debug logging enabled, log will be saved as C:\Users\Turgon/MakeMKV_log.txt AACS directory not present, assu...

#1 fails with same error. Will try #2 now.

I'll give it a shot.

This happens with all HD-DVDs backups I've tried so far, so perhaps something hosed about the way they were created. Though, they do play fine in old version of Power-DVD.

Here you go: MakeMKV v1.8.7 win(x64-release) started Debug logging enabled, log will be saved as C:\Users\Turgon/MakeMKV_log.txt DEBUG: Code 0 at |v8pAS,=n~vb~)-O;:121262164 DEBUG: Code 0 at |v8pAS,=n~vb~)-O;:121262164 AACS directory not present, assuming unencrypted disc DEBUG: Code 0 at |v8pAS,=n~...

I've got a lot of unencrypted ISOs on a network drive that I mount with Virtual Clone Drive. I've been converting them so I can watch with VLC. I can convert Blu-Rays from there without trouble. But the several HD-DVDs I've tried all fail within approximately 30 seconds of clicking Make MKV button w...