• https://ffmpeg.org/faq.html
• https://trac.ffmpeg.org/wiki/HWAccelIntro
• https://github.com/FFmpeg/FFmpeg/blob/master/doc/examples/hw_decode.c

Install

ERROR: cuda requested, but not all dependencies are satisfied: ffnvcodec

• https://trac.ffmpeg.org/wiki/HWAccelIntro#NVENC

Note: FFmpeg now uses its own slightly modified runtime-loader for NVIDIA's CUDA/NVENC/NVDEC-related libraries. If you get an error from `configure` complaining about missing `ffnvcodec`, ​this project (https://git.videolan.org/git/ffmpeg/nv-codec-headers.git) is what you need. It has a working Makefile with an install target: `make install PREFIX=/usr`. FFmpeg will look for its pkg-config file, called `ffnvcodec.pc`. Make sure it is in your `PKG_CONFIG_PATH`.

• ERROR: cuvid requested, but not all dependencies are satisfied: cuda/ffnvcodec
• FFMPEG 硬件转码 GPU CUDA9 问题
• http://www.ffmpeg-archive.org/configure-finish-with-fail-td4683193.html
• http://www.ffmpeg-archive.org/ffnvcodec-dependency-not-satisfied-even-after-including-external-headers-td4683260.html