issue about nvenc

[sung-hoon youn]

I'm facing an issue while trying to utilize the Hardware-Based Decoder and Encoder for streaming video from a camera.
Despite carefully following the instructions in the 'Hybrid HEVC Encoder Plugin for FFmpeg (User Guide)' manual, I encounter an error when I set 'acc_type = "nvenc"'.

Interestingly, using the Nvidia Video Codec SDK works perfectly when I use ffmpeg nvenc, suggesting that it's not a hardware problem.

I would greatly appreciate any guidance on how to proceed with this.

System Specs:
- CPU: Intel® Xeon® W-2225 CPU @ 4.10GHz
- GPU: NVIDIA RTX A4000
- Operating System: Ubuntu 18.04
- FFmpeg Version: omx_4.4_public_3.0
- Nvidia driver : 470.129.06

[Ivan Uskov]

Hi Sung-hoon
Our latest components built with nvidia video codec sdk 12.1 which by itself has following requirements for driver version:
Windows: Driver version 531.61 or higher
Linux: Driver version 530.41.03 or higher
Your current driver looks quite old.
please try to install a latest Nvidia driver this should to help.

[Josh.Dallagiacomo]

Looks like the latest one is

Version: R535 U9 (537.99) WHQL
Release Date: 2023.12.7
Operating System: Windows 10 64-bit, Windows 11
Language: English (US)

Which should meet the requirement there

[flaxinger]

Hi Sung-hoon
Our latest components built with nvidia video codec sdk 12.1 which by itself has following requirements for driver version:
Windows: Driver version 531.61 or higher
Linux: Driver version 530.41.03 or higher
Your current driver looks quite old.
please try to install a latest Nvidia driver this should to help.

I had the same problem, but I did upgrade my nvidia-driver to 530.41.03 but I got this error:
"
Trying to load demo_enc_hevc library
Can't load library nvcuvid: error 0x0:
HEVC validation error E0025: Layer 0 (Main): Unable to use hardware acceleration type 2, mode 0 due to unsupported hardware.
    Last message repeated 30 times
[omx_enc_hevc @ 0x55d3c6720a80] OMX error 0x8000100a
[omx_enc_hevc @ 0x55d3c6720a80] Component cannot allocate buffers
Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
Conversion failed!
"
The command I used is:
"
./ffmpeg -f v4l2 -r 30 -s 1920x1080 -i /dev/video0 -pix_fmt yuv420p -b:v 4000k -c:v omx_enc_hevc -omx_core libomxil_core.so -omx_name OMX.MainConcept.enc_hevc.video -omx_param "force_omx_param=0:acc_type=nvenc" /app/real-time_encoding.hevc -y"
"

Can you tell me what did wrong. And how to fix it?