[FFmpeg-user] Converting DNxHD (Atomos) .mov files to mp4 issues

Kassim Massop massop at gmail.com
Fri Sep 28 14:54:07 EEST 2018 

Dear community,

I have been using  ffmpeg to convert .mov files captured from my  Atomos
Ninja inferno for a few weeks now.

I recently recorded about an hour of footage in 4k resolution for the first
time and when I use the commands that normally work for me on lower
resolutions I get the below error.

My goal is to reduce the humongous file size to something more manageable
whilst keeping the quality high, I am a beginner user but I do have some
knowledge on how to use ffmpeg.

Command run - H:\FFMPEG-Convert\bin>ffmpeg -i 5.mov output.mov

Result - ffmpeg version N-53818-gfca435f Copyright (c) 2000-2013 the FFmpeg
developers
  built on Jun  4 2013 01:36:26 with gcc 4.7.3 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
--enable-gnutls --enable-iconv --enable-libass --enable-libbluray
--enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc
--enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus
--enable-librtmp --enable-libschroedinger --enable-libsoxr
--enable-libspeex --enable-libtheora --enable-libtwolame
--enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis
--enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid
--enable-zlib
  libavutil      52. 34.100 / 52. 34.100
  libavcodec     55. 15.100 / 55. 15.100
  libavformat    55.  8.102 / 55.  8.102
  libavdevice    55.  2.100 / 55.  2.100
  libavfilter     3. 74.101 /  3. 74.101
  libswscale      2.  3.100 /  2.  3.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  3.100 / 52.  3.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 02eb3000] Stream #0: not enough frames to
estimate rate; consider increasing probesize
[mov,mp4,m4a,3gp,3g2,mj2 @ 02eb3000] Stream #2: not enough frames to
estimate rate; consider increasing probesize
[mov,mp4,m4a,3gp,3g2,mj2 @ 02eb3000] Could not find codec parameters for
stream 1 (Video: none (AVdh / 0x68645641), 3840x2160, 1746099 kb/s):
unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize'
options
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '5.mov':
  Metadata:
    major_brand     : qt
    minor_version   : 537199360
    compatible_brands: qt
    creation_time   : 2018-09-26 17:15:02
    make            : Atomos
    make-eng        : Atomos
    encoder         : NinjaInferno - 8.5
    encoder-eng     : NinjaInferno - 8.5
    timecode        : 04:16:26;03
  Duration: 00:09:24.73, start: 0.000000, bitrate: 1757627 kb/s
    Stream #0:0(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, 10
channels, s32, 11520 kb/s
    Metadata:
      creation_time   : 2018-09-26 17:15:02
    Stream #0:1(eng): Video: none (AVdh / 0x68645641), 3840x2160, 1746099
kb/s, SAR 1:1 DAR 16:9, 59.94 fps, 59.94 tbr, 60k tbn, 60k tbc
    Metadata:
      creation_time   : 2018-09-26 17:15:02
    Stream #0:2(eng): Data: none (tmcd / 0x64636D74)
    Metadata:
      creation_time   : 2018-09-26 17:15:02
      timecode        : 04:16:26;03
File 'output.mov' already exists. Overwrite ? [y/N] y
[buffer @ 04950d80] Unable to parse option value "-1" as pixel format
    Last message repeated 1 times
[buffer @ 04950d80] Error setting option pix_fmt to value -1.
[graph 0 input from stream 0:1 @ 02eb8ec0] Error applying options to the
filter.
Error opening filters!


To work around this error I ran the below command

- H:\FFMPEG-Convert\bin>ffmpeg -i 5.mov -c copy -strict experimental -c:a
aac -b:a 11520k output.mov

But then got this new error

- ffmpeg version N-53818-gfca435f Copyright (c) 2000-2013 the FFmpeg
developers
  built on Jun  4 2013 01:36:26 with gcc 4.7.3 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
--enable-gnutls --enable-iconv --enable-libass --enable-libbluray
--enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc
--enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus
--enable-librtmp --enable-libschroedinger --enable-libsoxr
--enable-libspeex --enable-libtheora --enable-libtwolame
--enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis
--enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid
--enable-zlib
  libavutil      52. 34.100 / 52. 34.100
  libavcodec     55. 15.100 / 55. 15.100
  libavformat    55.  8.102 / 55.  8.102
  libavdevice    55.  2.100 / 55.  2.100
  libavfilter     3. 74.101 /  3. 74.101
  libswscale      2.  3.100 /  2.  3.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  3.100 / 52.  3.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 02f93000] Stream #0: not enough frames to
estimate rate; consider increasing probesize
[mov,mp4,m4a,3gp,3g2,mj2 @ 02f93000] Stream #2: not enough frames to
estimate rate; consider increasing probesize
[mov,mp4,m4a,3gp,3g2,mj2 @ 02f93000] Could not find codec parameters for
stream 1 (Video: none (AVdh / 0x68645641), 3840x2160, 1746099 kb/s):
unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize'
options
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '5.mov':
  Metadata:
    major_brand     : qt
    minor_version   : 537199360
    compatible_brands: qt
    creation_time   : 2018-09-26 17:15:02
    make            : Atomos
    make-eng        : Atomos
    encoder         : NinjaInferno - 8.5
    encoder-eng     : NinjaInferno - 8.5
    timecode        : 04:16:26;03
  Duration: 00:09:24.73, start: 0.000000, bitrate: 1757633 kb/s
    Stream #0:0(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, 10
channels, s32, 11520 kb/s
    Metadata:
      creation_time   : 2018-09-26 17:15:02
    Stream #0:1(eng): Video: none (AVdh / 0x68645641), 3840x2160, 1746099
kb/s, SAR 1:1 DAR 16:9, 59.94 fps, 59.94 tbr, 60k tbn, 60k tbc
    Metadata:
      creation_time   : 2018-09-26 17:15:02
    Stream #0:2(eng): Data: none (tmcd / 0x64636D74)
    Metadata:
      creation_time   : 2018-09-26 17:15:02
      timecode        : 04:16:26;03
File 'output.mov' already exists. Overwrite ? [y/N] y
[aac @ 02f972c0] Unsupported number of channels: 10
Output #0, mov, to 'output.mov':
  Metadata:
    major_brand     : qt
    minor_version   : 537199360
    compatible_brands: qt
    timecode        : 04:16:26;03
    make            : Atomos
    make-eng        : Atomos
    encoder         : NinjaInferno - 8.5
    encoder-eng     : NinjaInferno - 8.5
    Stream #0:0(eng): Video: none (AVdh / 0x68645641), 3840x2160 [SAR 1:1
DAR 16:9], q=2-31, 1746099 kb/s, 59.94 fps, 90k tbn, 60k tbc
    Metadata:
      creation_time   : 2018-09-26 17:15:02
    Stream #0:1(eng): Audio: aac, 48000 Hz, 10 channels, fltp, 11520 kb/s
    Metadata:
      creation_time   : 2018-09-26 17:15:02
Stream mapping:
  Stream #0:1 -> #0:0 (copy)
  Stream #0:0 -> #0:1 (pcm_s24le -> aac)
Error while opening encoder for output stream #0:1 - maybe incorrect
parameters such as bit_rate, rate, width or height

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