I’ve just moved my home server from arch linux to nixos, and am setting up my jellyfin server. When I enable hardware acceleration (Nvidia NVENC) the server fails to transcode.
Looking at the jellyfin logs, I noticed that the ffmpeg could not locate libcuda.so.1
ffmpeg version 5.1.2-Jellyfin Copyright (c) 2000-2022 the FFmpeg developers
built with gcc 12.2.0 (GCC)
configuration: --disable-static --prefix=/nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-jellyfin-ffmpeg-5.1.2-8 --target_os=linux --arch=x86_64 --pkg-config=pkg-config --enable-gpl --enable-version3 --disable-nonfree --enable-shared --enable-pic --disable-small --enable-runtime-cpudetect --enable-gray --enable-swscale-alpha --enable-hardcoded-tables --enable-safe-bitstream-reader --enable-pthreads --disable-w32threads --disable-os2threads --enable-network --enable-pixelutils --datadir=/nix/store/6z2vh69sinys0hly0pgs8d9awa629al7-jellyfin-ffmpeg-5.1.2-8-data/share/ffmpeg --enable-ffmpeg --enable-ffplay --enable-ffprobe --bindir=/nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-jellyfin-ffmpeg-5.1.2-8-bin/bin --enable-avcodec --enable-avdevice --enable-avfilter --enable-avformat --enable-avutil --enable-postproc --enable-swresample --enable-swscale --libdir=/nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-jellyfin-ffmpeg-5.1.2-8-lib/lib --incdir=/nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-jellyfin-ffmpeg-5.1.2-8-dev/include --enable-doc --enable-htmlpages --enable-manpages --mandir=/nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-jellyfin-ffmpeg-5.1.2-8-man/share/man --enable-podpages --enable-txtpages --docdir=/nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-jellyfin-ffmpeg-5.1.2-8-doc/share/doc/ffmpeg --enable-alsa --enable-bzlib --enable-libcelt --enable-cuda --enable-cuda-llvm --enable-libdav1d --disable-libfdk-aac --disable-libflite --enable-fontconfig --enable-libfreetype --enable-frei0r --enable-libfribidi --enable-libgme --enable-gnutls --enable-libgsm --enable-ladspa --enable-libmp3lame --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libdc1394 --enable-libdrm --enable-iconv --enable-libjack --enable-libmfx --enable-libmodplug --enable-libmysofa --enable-libopus --enable-libplacebo --enable-librsvg --enable-libsrt --enable-libssh --disable-libtensorflow --enable-libtheora --enable-libv4l2 --enable-v4l2-m2m --enable-vaapi --enable-vdpau --enable-libvorbis --enable-libvmaf --enable-libvpx --enable-libwebp --enable-xlib --enable-libxcb --enable-libxcb-shm --enable-libxcb-xfixes --enable-libxcb-shape --enable-libxml2 --enable-lzma --enable-cuvid --enable-nvdec --enable-nvenc --enable-openal --enable-opencl --enable-libopencore-amrnb --disable-opengl --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-libpulse --enable-librav1e --enable-libsvtav1 --disable-librtmp --enable-sdl2 --enable-libsoxr --enable-libspeex --enable-libvidstab --enable-libvo-amrwbenc --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzmq --enable-libzimg --enable-zlib --enable-vulkan --enable-libglslang --enable-libsmbclient --disable-debug --enable-optimizations --disable-extra-warnings --disable-stripping --extra-version=Jellyfin --disable-ptx-compression --enable-chromaprint
libavutil 57. 28.100 / 57. 28.100
libavcodec 59. 37.100 / 59. 37.100
libavformat 59. 27.100 / 59. 27.100
libavdevice 59. 7.100 / 59. 7.100
libavfilter 8. 44.100 / 8. 44.100
libswscale 6. 7.100 / 6. 7.100
libswresample 4. 7.100 / 4. 7.100
libpostproc 56. 6.100 / 56. 6.100
[AVHWDeviceContext @ 0x1364600] Cannot load libcuda.so.1
[AVHWDeviceContext @ 0x1364600] Could not dynamically load CUDA
Device creation failed: -1.
Failed to set value 'cuda=cu:0' for option 'init_hw_device': Operation not permitted
Error parsing global options: Operation not permitted
I tried installing cudatoolkit but to no avail. Any thoughts on how this could be solved (or on how to debug the issue further)? Thanks
