OBS Studio 25.0.8 (PPA)- ubuntu 20.04 - NVIDIA Driver Version: 450.66 - Failed to open NVENC codec: Generic error in an external libr

[fvaladares]

Hello, I am a Brazilian professor, and I'm using the OBS Studio to record and broadcast my lectures. But, now, I can't use my NVIDIA card to render the video, and I receive the message below.

I tried a lot of things without success.

I use the ffmpeg from the ubuntu sources, as request in the wiki install section, and the official PPA.

Log: LOG

===============================================================================================
The log error:
info: ---------------------------------
info: [NVENC encoder: 'recording_h264'] settings:
rate_control: CBR
bitrate: 2500
cqp: 0
keyint: 250
preset: hq
profile: high
width: 1280
height: 720
2-pass: false
b-frames: 2
GPU: 0

[h264_nvenc @ 0x56452cd2f080] OpenEncodeSessionEx failed: unsupported device (2)
[h264_nvenc @ 0x56452cd2f080] No NVENC capable devices found
warning: [NVENC encoder: 'recording_h264'] Failed to open NVENC codec: Generic error in an external library


===============================================================================================
sudo ffmpeg -encoders 2>/dev/null |grep nvenc
V..... h264_nvenc NVIDIA NVENC H.264 encoder (codec h264)
V..... nvenc NVIDIA NVENC H.264 encoder (codec h264)
V..... nvenc_h264 NVIDIA NVENC H.264 encoder (codec h264)
V..... nvenc_hevc NVIDIA NVENC hevc encoder (codec hevc)
V..... hevc_nvenc NVIDIA NVENC hevc encoder (codec hevc)
===============================================================================================

===============================================================================================
It works when I choose the FFMPEG VAAPI with CQP RAte Control

Video card: GeForce MX150 (GPU 0)

 

[Tuna]

09:58:00.512: Loading up OpenGL on adapter NVIDIA Corporation GeForce MX150/PCIe/SSE2

According to https://developer.nvidia.com/video-encode-decode-gpu-support-matrix The GeForce MX150 has no NVENC chip installed:

GeForce MX150 > MX250

Pascal

GP108

M

1

0

0

0

NO

NO

NO

NO

NO

NO

NO

NO

 

[fvaladares]

Oh, that's bad. :(

Thanks for your answer.