gistfile1.txt

cwalton@fuko ~/Development/ffmpeg $ ./ffmpeg -f lavfi -i testsrc -t 60 -c:v h264_nvenc test.mkvffmpeg version N-86480-ge53c9065ca Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 6.3.0 (GCC)
  configuration: --enable-gpl --enable-libx264 --enable-libopus --enable-nonfree --enable-libfdk_aac --extra-cflags=-I/usr/local/include --extra-ldflags=-L/usr/local/lib
  libavutil      55. 66.100 / 55. 66.100
  libavcodec     57. 99.100 / 57. 99.100
  libavformat    57. 73.100 / 57. 73.100
  libavdevice    57.  7.100 / 57.  7.100
  libavfilter     6. 92.100 /  6. 92.100
  libswscale      4.  7.101 /  4.  7.101
  libswresample   2.  8.100 /  2.  8.100
  libpostproc    54.  6.100 / 54.  6.100
Input #0, lavfi, from 'testsrc':
  Duration: N/A, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 320x240 [SAR 1:1 DAR 4:3], 25 tbr, 25 tbn, 25 tbc
File 'test.mkv' already exists. Overwrite ? [y/N] y
Stream mapping:
  Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (h264_nvenc))
Press [q] to stop, [?] for help
[h264_nvenc @ 0x3f38600] Cannot init CUDA
[h264_nvenc @ 0x3f38600] cuCtxPushCurrent failed
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!