Hey everyone,
I’m running into a really frustrating issue with Kdenlive when installed Flatpak on Fedora 44. I’ve noticed that i can’t record my voiceover tracks.
The Problem:
When I try to record a voiceover i will get this error
no valid stream found for encoding
My Setup:
• Operating System: Fedora
• Installation Method: Flatpak (Flathub)
• Kdenlive Version: 26.04.3
Thanks in advance for your help! 
Exact same error.
Strange because the version I got on Gentoo and built from source doesn’t have this error.
I’m trying some debugging rn
So it’s Fedora related?
Try the AppImage. Does it work there?
Not at all it’s flatpak related I think (I’m not on Fedora I’m using Gentoo)
For me the issue was the sample specification, that was “s24le” though the flatpak-embedded pipewire with kdenlive only supports “s16le”. You can see it typing:
pactl list sources | grep -A3 "<DeviceName>"
Look at the “Sample specification” line. Didn’t try the AppImage so I don’t know if it works there.
I recompiled kdenlive with my host system pipewire and now it works fine.