Nimble transcoder: Not getting my GPU working

Hi all.

I am running nimble & nimble transcoder on Ubuntu 2204. I have "Nvidia RTX™ 4000 SFF Ada Generation" on the system with drivers 550.144.03.

In the transcoding scenario, if I set the encoder to libx264 the scenario works and I get the output as I wish. However this obviously isn't using my GPU, only CPU.

If I set the encoder to ffmpeg and use h264_nvenc codec or if I use the encoder nvenc with h264 codec the scenario doesn't work, there's no output.

Does anybody have any idea how to get this working?

Log error for encoder ffmpeg with codec h264_nvenc:
[2025-06-08 11:34:12 P1677949-T1778827] [encoder] E: failed to open h264_nvenc video encoder for [nimbleDEINTCuda/TEST]: Function not implemented
[2025-06-08 11:34:12 P1677949-T1778827] [encoder] E: failed to init video encoder for [nimbleDEINTCuda/TEST]
[2025-06-08 11:34:12 P1677949-T1778827] [encoder] E: failed to encode video frame for [nimbleDEINTCuda/TEST]

Log error for encoder nvenc with codec h264:
[2025-06-08 11:42:20 P1677949-T1780201] [encoder] E: failed to open nvenc encode session, 2
[2025-06-08 11:42:20 P1677949-T1780201] [encoder] E: failed to encode video frame for [nimbleDEINTCuda/TEST]

Hello, Capitano.

Your question requires more thoughtful investigation and should be asked at the wmspanel.com/help page.
Regarding the errors provided ( E: failed to init video encoder ), I can guess you're facing driver issues on the box.
Please open a ticket at wmspanel.com/help to continue the discussion.

Thank you.

Hi Sergei. I managed to get these working. There were indeed driver issues, as two were installed and I guess nimble didn't know which to use. After removing both and installing latest Nvidia drivers it works.