OBS fails to start the NVENC codec with InfoWriter and external monitors

[RistrettoMike]

Hello folks, this strikes me as an odd issue, so I'll take a minute to establish some context.

I'm using InfoWriter on a laptop with NVIDIA Optimus - so I have both an integrated Intel GPU and dedicated NVIDIA GPU. I'm using the NVIDIA GPU (an RTX 3060 mobile) to encode a stream and record a local copy simultaneously, which works for me normally.

I'm trying to start using InfoWriter for logging my long video playsessions and importing timestamps into an editing program. I set up InfoWriter according to the readme, assigned a name to hotkey 1, assigned a hotkey, and was able to do a test stream + recording while generating the InfoWriter log file. No issues at all, this was on the laptop's internal screen.

Upon arriving home for the night I plugged my computer into a Thunderbolt dock (that routes video through the iGPU and out to two external monitors). I booted up OBS with the exact same InfoWriter config and I get an error when attempting to begin streaming that it fails to open the NVENC codec & refuses to start. Seeing as InfoWriter was the only thing I'd added to my OBS install, I tried removing the plugin and sure enough - the error goes away and I'm able to stream normally again.

I figure this must be a pretty odd edge case, but there's something about InfoWriter when using a dGPU that's being passed through an iGPU to an external screen. I've attached the error OBS throws along with the accompanying OBS log for that session. I hope it's helpful and that I/we can figure out a solution, even just in testing I can see this plugin is brilliant for working with OBS and lots of video.

Cheers,

~M

2021-11-11 22-31-40.txt

[partouf]

I suspect this was an unfortunate fluke and nothing actually to do with the plugin.
Have you tried adding it again after the streaming started working again?