$ ffmpeg -h encoder=nvenc
ffmpeg version 2.6.3 Copyright (c) 2000-2015 the FFmpeg developers
built with gcc 4.7 (SUSE Linux)
configuration: --shlibdir=/usr/lib64 --prefix=/usr --mandir=/usr/share/man --libdir=/usr/lib64 --enable-shared --disable-static --enable-debug --disable-stripping --extra-cflags='-O2 -g -m64 -fmessage-length=0 -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables -fasynchronous-unwind-tables -I./cudautils_and_nvenc_include_files' --extra-ldflags=-L./cudautils_and_nvenc_include_files --enable-pic --optflags='-O2 -g -m64 -fmessage-length=0 -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables -fasynchronous-unwind-tables' --enable-gpl --enable-x11grab --enable-version3 --enable-pthreads --datadir=/usr/share/ffmpeg --enable-libfaac --enable-libaacplus --enable-nonfree --enable-nvenc --enable-libopenjpeg --enable-avfilter --enable-libpulse --enable-libwebp --enable-libvpx --enable-libopus --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libspeex --enable-libxvid --enable-libx264 --enable-libx265 --enable-libschroedinger --enable-libgsm --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-postproc --enable-libdc1394 --enable-librtmp --enable-libfreetype --enable-avresample --enable-libtwolame --enable-libvo-aacenc --enable-gnutls --enable-libass --disable-libwebp --enable-frei0r --enable-libcelt --enable-libcdio --enable-ladspa
libavutil 54. 20.100 / 54. 20.100
libavcodec 56. 26.100 / 56. 26.100
libavformat 56. 25.101 / 56. 25.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 11.102 / 5. 11.102
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
Encoder nvenc [Nvidia NVENC h264 encoder]:
Threading capabilities: no
Supported pixel formats: nv12
nvenc AVOptions:
-preset <string> E..V.... Set the encoding preset (one of hq, hp, bd, ll, llhq, llhp, default) (default "hq")
-cbr <int> E..V.... Use cbr encoding mode (from 0 to 1) (default 0)
-2pass <int> E..V.... Use 2pass cbr encoding mode (low latency mode only) (from -1 to 1) (default -1)
-gpu <int> E..V.... Selects which NVENC capable GPU to use. First GPU is 0, second is 1, and so on. (from 0 to INT_MAX) (default 0)
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