[FFmpeg-trac] #7454(undetermined:new): h264_nvenc Cannot init CUDA
FFmpeg
trac at avcodec.org
Sun Sep 23 06:59:12 EEST 2018
#7454: h264_nvenc Cannot init CUDA
-------------------------------------+-------------------------------------
Reporter: audvare | Type: defect
Status: new | Priority: normal
Component: | Version: 3.4
undetermined | Blocked By:
Keywords: cuda, | Reproduced by developer: 0
nvenc, nvidia |
Blocking: |
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug:
In the past a command utilising NVENC worked (as did OBS). Now I always
get "Cannot init CUDA". I'm on a Gentoo machine and I've made sure to
rebuild everything that uses ffmpeg. I have a GeForce 980 GTX card
(Maxwell).
I have Nvidia drivers version 410.57.
I have minimally debugged this and found that it's from
[https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/nvenc.c#L558 line
~558 in nvenc.c]. The return value from `cuInit()` is
`CUDA_ERROR_UNKNOWN`. Unfortunately I have not seen any more information
on how to debug this.
{{{
$ qlist nvidia-drivers | fgrep encode
/usr/lib32/libnvidia-encode.so.410.57
/usr/lib64/libnvidia-encode.so.410.57
/usr/lib64/libnvidia-encode.so.1
/usr/lib64/libnvidia-encode.so
/usr/lib32/libnvidia-encode.so.1
/usr/lib32/libnvidia-encode.so
}}}
How to reproduce:
{{{
% ffmpeg -y -i yai.mp4 -c:v h264_nvenc -an out.mp4
ffmpeg version 3.4.4 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 8.2.0 (Gentoo 8.2.0-r2 p1.2)
configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64
--docdir=/usr/share/doc/ffmpeg-3.4.4/html --mandir=/usr/share/man
--enable-shared --cc=x86_64-pc-linux-gnu-gcc --cxx=x86_64-pc-linux-gnu-g++
--ar=x86_64-pc-linux-gnu-ar --optflags='-O2 -pipe -march=native -fomit-
frame-pointer -ggdb' --disable-static --enable-avfilter --enable-
avresample --disable-stripping --enable-nonfree --disable-indev=oss
--disable-indev=jack --disable-outdev=oss --enable-version3 --enable-
nonfree --enable-bzlib --disable-runtime-cpudetect --disable-debug
--disable-gcrypt --disable-gnutls --disable-gmp --enable-gpl --enable-
hardcoded-tables --enable-iconv --disable-lzma --enable-network --disable-
opencl --enable-openssl --enable-postproc --disable-libsmbclient --enable-
ffplay --enable-sdl2 --disable-vaapi --enable-vdpau --enable-xlib
--enable-libxcb --enable-libxcb-shm --enable-libxcb-xfixes --enable-zlib
--enable-libcdio --enable-libiec61883
--disable-libdc1394 --enable-libcaca --disable-openal --enable-opengl
--disable-libv4l2 --disable-libpulse --disable-libdrm --enable-
libopencore-amrwb --enable-libopencore-amrnb --enable-libfdk-aac --enable-
libopenjpeg --enable-libbluray --disable-libcelt --enable-libgme --enable-
libgsm --disable-mmal --enable-libmodplug --enable-libopus --disable-
libilbc --enable-librtmp --enable-libssh --enable-libspeex --enable-
librsvg --enable-libvorbis --enable-libvpx --enable-libzvbi --disable-
appkit --disable-libbs2b --enable-chromaprint --enable-libflite --disable-
frei0r --enable-libfribidi --disable-fontconfig --disable-ladspa --enable-
libass --enable-libfreetype --enable-librubberband --disable-libzmq
--enable-libzimg --disable-libsoxr --enable-pthreads --disable-libvo-
amrwbenc --enable-libmp3lame --disable-libkvazaar --enable-nvenc
--disable-libopenh264 --disable-libsnappy --enable-libtheora --enable-
libtwolame --enable-libwavpack --enable-libwebp --enable-libx264 --enable-
libx265 --enable-libxvid --disable-armv5te --disable-armv6 --disable-
armv6t2 --disable-neon --disable-vfp --disable-vfpv3 --disable-armv8
--disable-mipsdsp --disable-mipsdspr2 --disable-mipsfpu --disable-altivec
--disable-amd3dnow --disable-amd3dnowext --disable-fma4 --disable-xop--
cpu=host --disable-doc --disable-htmlpages --enable-manpages
libavutil 55. 78.100 / 55. 78.100
libavcodec 57.107.100 / 57.107.100
libavformat 57. 83.100 / 57. 83.100
libavdevice 57. 10.100 / 57. 10.100
libavfilter 6.107.100 / 6.107.100
libavresample 3. 7. 0 / 3. 7. 0
libswscale 4. 8.100 / 4. 8.100
libswresample 2. 9.100 / 2. 9.100
libpostproc 54. 7.100 / 54. 7.100
...
Duration: 00:10:08.80, start: 0.000000, bitrate: 2741 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv,
bt709), 1920x1080 [SAR 1:1 DAR 16:9], 2598 kb/s, 59.94 fps, 59.94 tbr, 90k
tbn, 119.88 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo,
fltp, 125 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream #0:2: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 1280x720
[SAR 1:1 DAR 16:9], 90k tbr, 90k tbn, 90k tbc
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (h264_nvenc))
Press [q] to stop, [?] for help
[h264_nvenc @ 0x55bcb71bfb20] Cannot init CUDA
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!
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/7454>
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