This is the exact version of handbrake I used from fr.handbrake.ghb that fixed the subtitles issue (which seems caused because the character encoding of the subtitles is not always recognized): => flatpak info fr.handbrake.ghb HandBrake - Video Transcoder
ID: fr.handbrake.ghb Ref: app/fr.handbrake.ghb/x86_64/stable Arch: x86_64 Branch: stable Version: 1.6.1 License: GPL-2.0+ Origin: ghb-origin Collection: Installation: user Installed: 123.3 MB Runtime: org.gnome.Platform/x86_64/43 Sdk: org.gnome.Sdk/x86_64/43 Commit: 227d2a8398a850cd93a6662116c0bc64be187eeb4f2e5a2ae1e490838cd03248 Subject: Export fr.handbrake.ghb Date: 2023-01-23 18:08:28 +0000