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• compiling ffmpeg with nvidia/cuda failed loading nvcuvid

  15 août 2018, par jupiar

  I am trying to compile an ffmpeg binary with support for using nvidia GPU’s, I am running :

  os: ubuntu 18.04
  
  nvidia driver: nvidia-driver-390
  
  cat /usr/local/cuda-9.0/version.txt => CUDA Version 9.0.176
  
  gpu: 2x 1080ti

  With the instructions shown on https://developer.nvidia.com/ffmpeg, being :

  git clone https://git.ffmpeg.org/ffmpeg.git
  
  cd ffmpeg
  
  ./configure --enable-cuda --enable-cuvid --enable-nvenc --enable-nonfree --enable-libnpp --extra-cflags=-I/usr/local/cuda/include --extra-ldflags=-L/usr/local/cuda/lib64

  I first found the error ERROR: cuda requested, but not all dependencies are satisfied: ffnvcodec, which was solved with help from https://superuser.com/questions/1299064/error-cuvid-requested-but-not-all-dependencies-are-satisfied-cuda-ffnvcodec. Below is the summary (make and make install just gave a list of commands to run) :

  git clone https://git.videolan.org/git/ffmpeg/nv-codec-headers.git
  
  cd nv-codec-headers
  
  sed 's#@@PREFIX@@#/usr/local#' ffnvcodec.pc.in > ffnvcodec.pc
  
  sudo install -m 0755 -d '/usr/local/include/ffnvcodec'
  
  sudo install -m 0644 include/ffnvcodec/*.h '/usr/local/include/ffnvcodec'
  
  sudo install -m 0755 -d '/usr/local/lib/pkgconfig'
  
  sudo install -m 0644 ffnvcodec.pc '/usr/local/lib/pkgconfig'

  With that done, I removed the ffmpeg folder, recloned it and ran within the folder :

  ./configure --enable-cuda --enable-cuvid --enable-nvenc --enable-nonfree --enable-libnpp --extra-cflags=-I/usr/local/cuda-9.0/include --extra-ldflags=-L/usr/local/cuda-9.0/lib64
  
  make -j 10

  Note that the path /usr/local/cuda-9.0 does contain both the include and lib64 folders, and that this resulted in no errors, just deprecation warnings.

  Now when running this particular ffmpeg binary, with absolute paths, using the flag -hwaccel cuvid results in :

  ~/Documents/ffmpeg-cuda/ffmpeg/ffmpeg -y -hwaccel cuvid -c:v h264_cuvid -vsync 0 -i ~/test.mp4 -vf "scale_npp=1920:1072" -vcodec h264_nvenc ~/out1.mp4 -vf scale_npp=1280:720 -vcodec h264_nvenc out2.mp4

  Which, is exactly what they have on their website to test it, results in :

  [h264_cuvid @ 0x556348eb94c0] Cannot load cuvidGetDecodeStatus
  
  [h264_cuvid @ 0x556348eb94c0] Failed loading nvcuvid.

  I have also prepended : PKG_CONFIG_PATH="/usr/local/lib/pkgconfig" before ./configure, but also did not make a difference.

  What am I doing wrong ? Is there something important I missed ?

• fluent-ffmpeg video merge with hardware acceleration using NVIDIA graphics card

  23 août 2018, par krisalay

  I am trying to concatenate videos to one single .mp4 file.

  If I am not using hardware acceleration then the merge is working fine.

  However, when I provide -hwaccel cuvid as inputOptions and -c:v h264_nvenc as outputOptions then it throws error :

  ffmpeg exited with code 1: 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

  The code :

  ffmpeg
  
  .input('video1.mp4')
  
  .input('video2.mp4')
  
  .inputOptions(['-loglevel error','-hwaccel cuvid'])
  
  .outputOptions('-c:v h264_nvenc')
  
  .mergeToFile('filepath.mp4')

  What could be the possible reason for the error ? And what can be the solution to resolve the error ?

• avfilter : add nvidia NPP based transpose filter

  29 août 2018, par Roman Arzumanyan

  avfilter : add nvidia NPP based transpose filter
  Signed-off-by : Timo Rothenpieler <timo@rothenpieler.org>
  

  • [DH] Changelog
  • [DH] configure
  • [DH] doc/filters.texi
  • [DH] libavfilter/Makefile
  • [DH] libavfilter/allfilters.c
  • [DH] libavfilter/version.h
  • [DH] libavfilter/vf_transpose_npp.c