…/Steam/logs/streaming_log.txt

https://pastebin.com/DaGCsqGg

btw, to be more specific, I'm using Wayland and Pipewire on Sway.

I don't know about the audio problem (lost audio packets, from the log) but it looks like you're missing some VAAPI libraries (details here[wiki.archlinux.org]; make sure that you have both i386 & amd64 builds).

I tried that but it still seems to show the errors. It also shows the errors on a successful recording, so it might not be the cause. it doesn't say `>>> Failed to add 1024 audio samples` on the successful one though, so that seems like it's what's triggering it to cancel.
Also, Noita never successfully starts recording, but it doesn't error out like Terraria does. It repeats the same messages in the logs the entire time the game is open:
[2024-06-29 15:29:00][1066.091711] Adding window 83886124 for process 5853 and gameID 881100
[2024-06-29 15:29:00][1066.092309] Removing window 83886124 for process 5853 and gameID 881100
[2024-06-29 15:29:00][1066.821109] Adding window 83886124 for process 5853 and gameID 881100
[2024-06-29 15:29:00][1066.821592] Removing window 83886124 for process 5853 and gameID 881100
[2024-06-29 15:29:01][1067.582908] Adding window 83886124 for process 5853 and gameID 881100
[2024-06-29 15:29:01][1067.583474] Removing window 83886124 for process 5853 and gameID 881100
[2024-06-29 15:29:02][1068.347017] Adding window 83886124 for process 5853 and gameID 881100
[2024-06-29 15:29:02][1068.347526] Removing window 83886124 for process 5853 and gameID 881100
[2024-06-29 15:29:03][1069.111585] Adding window 83886124 for process 5853 and gameID 881100
[2024-06-29 15:29:03][1069.112208] Removing window 83886124 for process 5853 and gameID 881100

I've discovered it successfully records if I turn recording off and on again while the game is already running. It seems its fail is related to the game starting at the same time.

did u try restart the game