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ffmpeg-with-nvidia-gpu.md

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FFmpeg with Nvidia GPU

Using ffmpeg with Nvidia CUDA NVENC/NVDEC hardware acceleration.

Prerequisites

  • A ​supported GPU
  • Supported drivers for your operating system
    • Run nvidia-smi to check
  • The NVIDIA Codec SDK
    • will be installed in path /usr/local/cuda by default on Linux

Build

#  ffmpeg with nvidia gpu and other dependencies have been integrated in 'buildtools/scripts/build.sh', 
#  see more details in 'buildtools/scripts/build-ffmpeg.sh'
$ ./buildtools/scripts/build.sh

Run

# decode with nvdec, then encode with nvenc
$ ./build/bin/ffmpeg -hwaccel_output_format cuda -hwaccel cuda -i bbb_sunflower_1080p_60fps_normal.mp4 -c:v h264_nvenc -c:a copy out.mp4

# if the known issue 'No decoder surfaces left' occur, try add `-extra_hw_frames`
$ ./build/bin/ffmpeg -hwaccel_output_format cuda -hwaccel cuda -extra_hw_frames 5 -i bbb_sunflower_1080p_60fps_normal.mp4 -c:v h264_nvenc -c:a copy out.mp4

Known Issues

No decoder surfaces left

See details below.
In the testing. I found that it works well on ffmpeg n4.3.3, but failed since ffmpeg n4.4, looks like something changed between the two versions, which NEED to investigate more.
One possible workaround is adding -extra_hw_frame to aquire more buffer.

$ ffmpeg -y -hwaccel cuda -hwaccel_output_format cuda -i bbb_sunflower_1080p_60fps_normal.mp4 -c:a copy -c:v h264_nvenc -b:v 5M output.mp4
ffmpeg version n4.4 Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)
  configuration: --prefix=/root/workspace/ffmpeg-build/ffmpeg/../build --enable-nonfree --enable-gpl --enable-static --disable-shared --enable-cuda-nvcc --enable-nvenc --enable-nvdec --enable-libnpp --extra-cflags=-I/usr/local/cuda/include --extra-ldflags=-L/usr/local/cuda/lib64 --nvccflags='-gencode arch=compute_75,code=sm_75 -O2'
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'bbb_sunflower_1080p_60fps_normal.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 1
    compatible_brands: isomavc1
    creation_time   : 2013-12-16T17:59:32.000000Z
    title           : Big Buck Bunny, Sunflower version
    artist          : Blender Foundation 2008, Janus Bager Kristensen 2013
    comment         : Creative Commons Attribution 3.0 - http://bbb3d.renderfarming.net
    genre           : Animation
    composer        : Sacha Goedegebure
  Duration: 00:10:34.53, start: 0.000000, bitrate: 4486 kb/s
  Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 4001 kb/s, 60 fps, 60 tbr, 60k tbn, 120 tbc (default)
    Metadata:
      creation_time   : 2013-12-16T17:59:32.000000Z
      handler_name    : GPAC ISO Video Handler
      vendor_id       : [0][0][0][0]
  Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 160 kb/s (default)
    Metadata:
      creation_time   : 2013-12-16T17:59:37.000000Z
      handler_name    : GPAC ISO Audio Handler
      vendor_id       : [0][0][0][0]
  Stream #0:2(und): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side), fltp, 320 kb/s (default)
    Metadata:
      creation_time   : 2013-12-16T17:59:37.000000Z
      handler_name    : GPAC ISO Audio Handler
      vendor_id       : [0][0][0][0]
    Side data:
      audio service type: main
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (h264_nvenc))
  Stream #0:2 -> #0:1 (copy)
Press [q] to stop, [?] for help
[mp4 @ 0x562b0b2d3680] track 1: codec frame size is not set
Output #0, mp4, to 'output.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 1
    compatible_brands: isomavc1
    composer        : Sacha Goedegebure
    title           : Big Buck Bunny, Sunflower version
    artist          : Blender Foundation 2008, Janus Bager Kristensen 2013
    comment         : Creative Commons Attribution 3.0 - http://bbb3d.renderfarming.net
    genre           : Animation
    encoder         : Lavf58.76.100
  Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), cuda(progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 5000 kb/s, 60 fps, 15360 tbn (default)
    Metadata:
      creation_time   : 2013-12-16T17:59:32.000000Z
      handler_name    : GPAC ISO Video Handler
      vendor_id       : [0][0][0][0]
      encoder         : Lavc58.134.100 h264_nvenc
    Side data:
      cpb: bitrate max/min/avg: 0/0/5000000 buffer size: 10000000 vbv_delay: N/A
  Stream #0:1(und): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side), fltp, 320 kb/s (default)
    Metadata:
      creation_time   : 2013-12-16T17:59:37.000000Z
      handler_name    : GPAC ISO Audio Handler
      vendor_id       : [0][0][0][0]
    Side data:
      audio service type: main
[h264 @ 0x562b0bd7e0c0] No decoder surfaces left0:00:00.00 bitrate=N/A dup=2 drop=0 speed=   0x
[h264 @ 0x562b0bd9aec0] No decoder surfaces left
[h264 @ 0x562b0bdb7cc0] No decoder surfaces left
[h264 @ 0x562b0bdd4ac0] No decoder surfaces left
[h264 @ 0x562b0bd612c0] No decoder surfaces left
Error while decoding stream #0:0: Invalid data found when processing input
    Last message repeated 1 times
[h264 @ 0x562b0bd7e0c0] No decoder surfaces left
Error while decoding stream #0:0: Invalid data found when processing input
[h264 @ 0x562b0bd9aec0] No decoder surfaces left
Error while decoding stream #0:0: Invalid data found when processing input
Impossible to convert between the formats supported by the filter 'Parsed_null_0' and the filter 'auto_scaler_0'
Error reinitializing filters!
Failed to inject frame into filter network: Function not implemented
Error while processing the decoded data for stream #0:0
Conversion failed!

References