You say "merge the 2 discs"? What do you mean? What have you ripped, the whole disc to a folder or an ISO? If you've ripped main movie only to .mkv then the procedure you outline should work fine in MKVToolnixGUI. If you do mean trying to join two .mkv's are you sure you did the procedure correctly? And for simplicity have you renamed the .mkv's - Part1.mkv Part2.mkv and join to LOTRJoined.mkv or similar, you can always rename your completed file to whatever you choose.rubra wrote: ↑Fri Jan 05, 2024 7:35 amhey I'm trying to merge the 2 discs for my lord of the rings bluray that I ripped but I'm having some trouble. I'm using mkvtoolnix added the first part as a source file in the multiplexer tab right clicked on it and appended the second part ran it but it immediately failed giving me the error
"Files cannot be appended to themselves. The argument for '--append-to' was invalid."
You are talking about the extended editions here - spread across two discs?
Edit: Although I haven't waded through it there's a 3 page thread on this forum about precisely this, it may be of use to you.
Merging Lord of the Rings Extended Edition Trilogy Set