A lot of artifacts when exporting clips

[hemorrhoids™]

I thought this was going to be the same bug as the "framerate clips limited to 35 fps" which is why I didn't add a discussion for this. It got introduced in the same update

Any time I export a clip (doesn't matter what settings) and I try playing with mpv, I get severe artifacting. the reason why I thought it was the same issue is if I play with VLC or chrome, instead of artifacting I just get laggy low-fps playback
screenshot: https://files.catbox.moe/6p4t86.png
exported clip: https://files.catbox.moe/g2knvv.mp4

In case you don't repro for some reason, I reencoded it with ffmpeg and it seems to have artifacting no matter what player is being used https://files.catbox.moe/6f6tsr.mp4

some highlights of my system info

Processor Information:
CPU Vendor: AuthenticAMD
CPU Brand: AMD Ryzen 7 7800X3D 8-Core Processor

Operating System Version:
Ubuntu 24.04.1 LTS (64 bit)
Kernel Name: Linux
Kernel Version: 6.5.0-1016-oem
X Server Vendor: The X.Org Foundation
X Server Release: 12401000
X Window Manager: KWin
Steam Runtime Version: steam-runtime_0.20240916.101793

Client Information:
Version: 1729015347

Video Card:
Driver: AMD AMD Radeon RX 7900 XTX (radeonsi, navi31, LLVM 16.0.6, DRM 3.54, 6.5.0-1016-oem)
Driver Version: 4.6 (Compatibility Profile) Mesa 24.1.0

let me know if you need more info

[Wrlccywrlfh]

I'm having the same problem, can record perfectly with obs but with steam gets a lot of artifacts

[Bestest User]

I'm having the same issue, the preview in the clip editor/manager is fine but if clips are watched in mpv or any uploaded website there is heavy artifacting, and if watched in VLC it is a very low framerate. I used to try and use OBS game capture but that could be tempermental, so having it be built in and be able to easily create the specific clips after the fact was great. Hope this can be fixed

[hemorrhoids™]

I just figured out a workaround just so I wouldn't have to go back to using OBS. This is an issue when the steam game recorder is exporting clips. But the files in the actual harddrive are still good

Go into the folder you gave to steam to save your videos. go into the directory `video` and find the folder for the clip you want to save. Run mpv on the

session.mpd

file, find the timestamps of the clip you want to save. And finally open up the terminal and run the ffmpeg command

ffmpeg -ss {start duration} -to {end duration} -i session.mpd -c copy output.mp4

You finally have the full quality output file you can do whatever you were planning on doing with. You can also mess with the command if you don't want the full quality version

ffmpeg -ss 1:00 -to 2:00 -i session.mpd -vf "scale=-2:1080" -crf 24 output.mp4

to downscale it to 1080p and lower the bitrate a bit

You can also do the same thing to clips (located in the clips directory), but I think valve ♥♥♥♥♥♥ up the session.mpd for that since mpv and ffmpeg only use the first segment. I've copied the session.mpd over from a random video directory and it fixed that for me. valve pls fix

[AngryTux]

Nice find!

Hopefully valve fixes this soon. ffmpeg for the whole session and afterwards opened in e.g. kdenlive :-)