InfoLibre

I know. But after unzipping files, .001 and .002 files can't be opened, even after renaming them into .7z files. 

Even without renaming them, there's the same error.

I don't think I've got an old version on Linux Mint. None of the tools I tried works with your files.

Same error with https://wiki.gnome.org/Apps/FileRoller. I tried under Windows 10 with last version of 7-Zip. I can extract .001 file but not .002 file: 

Artic Fox (001 file) under Windows XP SP3: 

Even with VC2013, I've got the XML parsing error: 

Indeed. Same result on my XP VM.

See https://github.com/orgs/linuxmint/discussions/916

WebRTC was added into ffmpeg: https://www.phoronix.com/news/FFmpeg-Lands-WHIP-Muxer