Can't customize any ringtone
I tried to customise the ringtone, bug linphone (4.1.1/linux (ubuntu LTS)/flatpak) either crashes or doesnt read the new ringtone every time i try to change from the default one.
[12:30:22:590][Info]Core:linphone: Opening ***/cc.mkv
[12:30:22:590][Info]Core:linphone: MKVPlayer: opening ***cc.mkv
[12:30:22:592][Error]Core:linphone: MKVParser: not a matroska file
[12:30:22:592][Error]Core:linphone: MKVParser: error while parsing EBML header
[12:30:22:592][Error]Core:linphone: MKVPlayer: ***cc.mkv could not be opened in read-only mode
[12:30:22:592][Error]Core:linphone: Cannot open ***cc.mkv
The file can be read in any media player.
I tried different combination of audio codecs and settings, trying to get closer to the default "notes_of_the_optimistic.mkv". I also tried to encode it with various encoders (ffmpeg, mkvtoolnix)
How do we customize the ringtone / What is the right way/format to encode something to be usable as a ringtone in linphone ?