gistfile1.txt

ffmpeg -f concat -safe 0 -i files.txt -c copy -f mov output.mov
ffmpeg version 3.2.1 Copyright (c) 2000-2016 the FFmpeg developers
  built with Apple LLVM version 8.0.0 (clang-800.0.38)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libass --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --enable-openssl --disable-lzma --enable-nonfree --enable-vda
  libavutil      55. 34.100 / 55. 34.100
  libavcodec     57. 64.101 / 57. 64.101
  libavformat    57. 56.100 / 57. 56.100
  libavdevice    57.  1.100 / 57.  1.100
  libavfilter     6. 65.100 /  6. 65.100
  libavresample   3.  1.  0 /  3.  1.  0
  libswscale      4.  2.100 /  4.  2.100
  libswresample   2.  3.100 /  2.  3.100
  libpostproc    54.  1.100 / 54.  1.100
[concat @ 0x7f8f25003400] Could not find codec parameters for stream 1 (Unknown: none): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, concat, from 'files.txt':
  Duration: N/A, start: 0.000000, bitrate: 168642 kb/s
    Stream #0:0(eng): Video: prores (ap4h / 0x68347061), yuva444p10le(smpte170m/smpte170m/bt709), 956x714, 168642 kb/s, 60 fps, 60 tbr, 60 tbn, 60 tbc
    Metadata:
      creation_time   : 2016-11-29T22:19:05.000000Z
      handler_name    : Core Media Data Handler
      encoder         : Apple ProRes 4444
      timecode        : 00:00:00:00
    Stream #0:1: Unknown: none
File 'output.mov' already exists. Overwrite ? [y/N] y
Output #0, mov, to 'output.mov':
  Metadata:
    encoder         : Lavf57.56.100
    Stream #0:0(eng): Video: prores (ap4h / 0x68347061), yuva444p10le(smpte170m/smpte170m/bt709), 956x714, q=2-31, 168642 kb/s, 60 fps, 60 tbr, 15360 tbn, 60 tbc
    Metadata:
      creation_time   : 2016-11-29T22:19:05.000000Z
      handler_name    : Core Media Data Handler
      encoder         : Apple ProRes 4444
      timecode        : 00:00:00:00
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
frame=  102 fps=0.0 q=-1.0 Lsize=   34808kB time=00:07:11.11 bitrate= 661.4kbits/s speed=7.18e+03x
video:34806kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.006751%