Intel Arc A770 QSV encoder failure

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Hi, everyone!

My PC Setup:
13900K with UHD 770 iGPU
RTX4090
Intel Arc A770
Windows 11
latest OBS 30, driver, everthing.

The issue is I can't use the QSV AV1 encoder on the second dGPU which is Intel A770. It says "Starting the output failed". And QSV H254&H265 encoder works fine. Win Task Manager shows activity on iGPU encoder, not on the dGPU encoder. So when it comes to AV1, which is exclusive to dGPU, it can't fallback to iGPU and fails. That's my guess. Logs attached.

Is that because I have a RTX4090 installed at the same time? Can I select between iGPU and dGPU encoder? And just for curiosity, can I enable Intel Hyper Encode in OBS which allows me to utilize iGPU+dGPU simultaneously?

Thanks for any help!
 

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