Created attachment 161192 [details]
ffmpeg error details

SUMMARY
***
I use Fedora 38 and I have Kdenlive 23.08.0 installed via flatpak. I use Gnome with Wayland.
When I open the application I see a notification popping up at the top of the screen, saying:

"Oops! We're sorry, it looks like ffmpeg crashed"

Kdenlive application remains running, but that notification is shown again from time to time. For example, when I go to "Run config wizard", the notification is raised again.
***


STEPS TO REPRODUCE
1. Install Kdenlive 23.08.0 from Flatpak in Fedora 38 with Gnome 
2. Open Kdenlive, you'll see the ffmpeg crash report at the top
3. Alternatively, open "Run config wizard" option in Kdenlive, it will show the ffmpeg crash notification at the top.

OBSERVED RESULT
It's raising a ffmpeg crash notification at the top.

EXPECTED RESULT
No error notifications.

SOFTWARE/OS VERSIONS
Fedora 38 with Gnome

ADDITIONAL INFORMATION

When I go to view the details of the ffmpeg error, I can see:

ffmpeg killed by SIGSEGV
cmdline: /app/bin/ffmpeg -hide_banner -f lavfi -i color=s=640x360 -frames 1 -an -c:v av1_nvenc -f rawvideo pipe:

When I do:

flatpak run --command=sh --devel org.kde.kdenlive

Then:

/app/bin/ffmpeg -hide_banner -f lavfi -i color=s=640x360 -frames 1 -an -c:v av1_nvenc -f rawvideo pipe:

I can see this output:

[📦 org.kde.kdenlive bin]$ /app/bin/ffmpeg -hide_banner -f lavfi -i color=s=640x360 -frames 1 -an -c:v av1_nvenc -f rawvideo pipe:
Input #0, lavfi, from 'color=s=640x360':
  Duration: N/A, start: 0.000000, bitrate: N/A
  Stream #0:0: Video: wrapped_avframe, yuv420p, 640x360 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 25 tbn
Stream mapping:
  Stream #0:0 -> #0:0 (wrapped_avframe (native) -> av1 (av1_nvenc))
Press [q] to stop, [?] for help
[av1_nvenc @ 0x559ec50e8000] Cannot load libcuda.so.1
Segmentation fault (core dumped)
[📦 org.kde.kdenlive bin]$ 


I have 2 GPUs here:

00:02.0 VGA compatible controller: Intel Corporation Raptor Lake-S GT1 [UHD Graphics 770] (rev 04)
03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Navi 23 [Radeon RX 6600/6600 XT/6600M] (rev c7)

As you can see above I don't have Nvidia on my system.  But it appears to be looking for a cuda library?