I've uploaded the debug file
The problem is, the second file is the same as the first file but with the proper name.
Tried both mp4 output files and mkv also.
14.11.2023, 18:00 (This post was last modified: 14.11.2023, 18:01 by Selur.)
Okay, no need to look at the debug, my guess is that this was a bug in that version which was fixed ages ago.
I stopped checking anything regarding Windows 7&8 with 2021.01.31.1.
The only thing I can recommend is try another version.