GoPro MP4s to one big MP4

gistfile1.txt

mbp:Kai H5B 4 kaihendry$ ~/recordmydesktop2.0/concat.sh GOPR1119.MP4 GP0{1..8}1119.MP4
file '/Users/kaihendry/Pictures/GoPro/2017-05-01/Kai H5B 4/GOPR1119.MP4'
file '/Users/kaihendry/Pictures/GoPro/2017-05-01/Kai H5B 4/GP011119.MP4'
file '/Users/kaihendry/Pictures/GoPro/2017-05-01/Kai H5B 4/GP021119.MP4'
file '/Users/kaihendry/Pictures/GoPro/2017-05-01/Kai H5B 4/GP031119.MP4'
file '/Users/kaihendry/Pictures/GoPro/2017-05-01/Kai H5B 4/GP041119.MP4'
file '/Users/kaihendry/Pictures/GoPro/2017-05-01/Kai H5B 4/GP051119.MP4'
file '/Users/kaihendry/Pictures/GoPro/2017-05-01/Kai H5B 4/GP061119.MP4'
file '/Users/kaihendry/Pictures/GoPro/2017-05-01/Kai H5B 4/GP071119.MP4'
file '/Users/kaihendry/Pictures/GoPro/2017-05-01/Kai H5B 4/GP081119.MP4'
ffmpeg version 3.3 Copyright (c) 2000-2017 the FFmpeg developers
  built with Apple LLVM version 8.1.0 (clang-802.0.41)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/3.3 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-vda
  libavutil      55. 58.100 / 55. 58.100
  libavcodec     57. 89.100 / 57. 89.100
  libavformat    57. 71.100 / 57. 71.100
  libavdevice    57.  6.100 / 57.  6.100
  libavfilter     6. 82.100 /  6. 82.100
  libavresample   3.  5.  0 /  3.  5.  0
  libswscale      4.  6.100 /  4.  6.100
  libswresample   2.  7.100 /  2.  7.100
  libpostproc    54.  5.100 / 54.  5.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8c5700f400] Using non-standard frame rate 29/1
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8c5700f400] Auto-inserting h264_mp4toannexb bitstream filter
[concat @ 0x7f8c57006800] Could not find codec parameters for stream 2 (Unknown: none): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[concat @ 0x7f8c57006800] Could not find codec parameters for stream 3 (Unknown: none): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[concat @ 0x7f8c57006800] Could not find codec parameters for stream 4 (Unknown: none): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, concat, from '/tmp/FRRHCo':
  Duration: N/A, start: 0.000000, bitrate: 60069 kb/s
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, bt709), 3840x2160 [SAR 1:1 DAR 16:9], 59941 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    Metadata:
      creation_time   : 2017-05-01T15:39:36.000000Z
      handler_name    : 	GoPro AVC
      encoder         : GoPro AVC encoder
      timecode        : 16:11:02:25
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s
    Metadata:
      creation_time   : 2017-05-01T15:39:36.000000Z
      handler_name    : 	GoPro AAC
      timecode        : 16:11:02:25
    Stream #0:2: Unknown: none
    Stream #0:3: Unknown: none
    Stream #0:4: Unknown: none
Output #0, mp4, to 'output.mp4':
  Metadata:
    encoder         : Lavf57.71.100
    Stream #0:0(eng): Video: h264 (High) ([33][0][0][0] / 0x0021), yuvj420p(pc, bt709), 3840x2160 [SAR 1:1 DAR 16:9], q=2-31, 59941 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 90k tbc
    Metadata:
      creation_time   : 2017-05-01T15:39:36.000000Z
      handler_name    : 	GoPro AVC
      encoder         : GoPro AVC encoder
      timecode        : 16:11:02:25
    Stream #0:1(eng): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 128 kb/s
    Metadata:
      creation_time   : 2017-05-01T15:39:36.000000Z
      handler_name    : 	GoPro AAC
      timecode        : 16:11:02:25
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8c56801000] Using non-standard frame rate 29/1bits/s speed=58.1x
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8c56801000] Auto-inserting h264_mp4toannexb bitstream filter
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8c56801000] Using non-standard frame rate 29/1bits/s speed=56.9x
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8c56801000] Auto-inserting h264_mp4toannexb bitstream filter
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8c57004800] Using non-standard frame rate 29/1bits/s speed=57.4x
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8c57004800] Auto-inserting h264_mp4toannexb bitstream filter
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8c57004800] Using non-standard frame rate 29/1bits/s speed=57.3x
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8c57004800] Auto-inserting h264_mp4toannexb bitstream filter
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8c58001200] Using non-standard frame rate 29/1bits/s speed=57.6x
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8c58001200] Auto-inserting h264_mp4toannexb bitstream filter
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8c58000000] Using non-standard frame rate 29/1bits/s speed=56.6x
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8c58000000] Auto-inserting h264_mp4toannexb bitstream filter
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8c58000000] Using non-standard frame rate 29/1kbits/s speed=56.2x
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8c58000000] Auto-inserting h264_mp4toannexb bitstream filter
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8c5708a200] Using non-standard frame rate 29/1kbits/s speed=56.4x
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8c5708a200] Auto-inserting h264_mp4toannexb bitstream filter
frame=128497 fps=1695 q=-1.0 Lsize=31442626kB time=01:11:27.54 bitrate=60075.8kbits/s speed=56.5x
video:31371007kB audio:66993kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.014715%
mbp:Kai H5B 4 kaihendry$ ls -alh
total 125817856
drwxr-xr-x  12 kaihendry  staff   408B May  1 20:08 .
drwxr-xr-x   3 kaihendry  staff   102B May  1 16:53 ..
-rw-------   1 kaihendry  staff   3.7G May  1 15:39 GOPR1119.MP4
-rw-------   1 kaihendry  staff   3.7G May  1 15:48 GP011119.MP4
-rw-------   1 kaihendry  staff   3.7G May  1 15:57 GP021119.MP4
-rw-------   1 kaihendry  staff   3.7G May  1 16:06 GP031119.MP4
-rw-------@  1 kaihendry  staff   3.7G May  1 16:15 GP041119.MP4
-rw-------   1 kaihendry  staff   3.7G May  1 16:23 GP051119.MP4
-rw-------   1 kaihendry  staff   3.7G May  1 16:32 GP061119.MP4
-rw-------   1 kaihendry  staff   3.7G May  1 16:41 GP071119.MP4
-rw-------   1 kaihendry  staff   196M May  1 16:50 GP081119.MP4
-rw-rw-r--   1 kaihendry  staff    30G May  1 20:09 output.mp4
mbp:Kai H5B 4 kaihendry$ file output.mp4
output.mp4: ISO Media, MP4 Base Media v1 [IS0 14496-12:2003]
mbp:Kai H5B 4 kaihendry$