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• ffmpeg streaming via rtp reorders streams

  19 juin 2023, par konovification

  I'm streaming a video using ffmpeg -i bbb.mp4 -c:v copy -c:a copy -f rtp_mpegts "rtp://239.1.1.1:8000". The command line output is :

  


  ffmpeg version 4.3.6-0+deb11u1 Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 10 (Debian 10.2.1-6)
  configuration: --prefix=/usr --extra-version=0+deb11u1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  WARNING: library configuration mismatch
  avcodec     configuration: --prefix=/usr --extra-version=0+deb11u1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared --enable-version3 --disable-doc --disable-programs --enable-libaribb24 --enable-liblensfun --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libtesseract --enable-libvo_amrwbenc
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Guessed Channel Layout for Input Stream #0.1 : 5.1
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'bbb.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    title           : Big Buck Bunny, Sunflower version
    artist          : Blender Foundation 2008, Janus Bager Kristensen 2013
    composer        : Sacha Goedegebure
    encoder         : Lavf58.45.100
    comment         : Creative Commons Attribution 3.0 - http://bbb3d.renderfarming.net
    genre           : Animation
  Duration: 00:10:34.64, start: 0.000000, bitrate: 4195 kb/s
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 4094 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    Metadata:
      handler_name    : GPAC ISO Video Handler
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 96 kb/s (default)
    Metadata:
      handler_name    : GPAC ISO Audio Handler
Output #0, rtp_mpegts, to 'rtp://239.1.1.1:8000':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    title           : Big Buck Bunny, Sunflower version
    artist          : Blender Foundation 2008, Janus Bager Kristensen 2013
    composer        : Sacha Goedegebure
    genre           : Animation
    comment         : Creative Commons Attribution 3.0 - http://bbb3d.renderfarming.net
    encoder         : Lavf58.45.100
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 4094 kb/s, 25 fps, 25 tbr, 90k tbn, 25 tbc (default)
    Metadata:
      handler_name    : GPAC ISO Video Handler
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 96 kb/s (default)
    Metadata:
      handler_name    : GPAC ISO Audio Handler
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help


  


  When I run ffprobe rtp://239.1.1.1:8000 (without restarting the stream), around one in ten times I get

  


  Input #0, rtp, from 'rtp://239.1.1.1:8000':
  Duration: N/A, start: 411.533978, bitrate: N/A
  Program 1 
    Metadata:
      service_name    : Service01
      service_provider: FFmpeg
    Stream #0:1: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
    Stream #0:0: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 384 kb/s


  


  Meaning that the video and audio streams swapped indices. I'm writing a program which uses libav where I rely on this to not happen. What is the reason for this and can it be fixed ?

  


• Concatenating video using FFMPEG wrapper class [duplicate]

  21 décembre 2017, par alan samuel

  This question already has an answer here :

  • Parsed_concat_1 @ 02ad98e0 Failed to configure output pad on Parsed_concat_1 ffmpeg
    
    1 answer
    
  • how to use ffmpeg to apply 1:1 SAR before concat on large complex filter
    
    1 answer
    

  I am trying to concatenate video using NReco.VideoConverter wrapper class made for FFMPEG.

  I have three video files with the same frame rate and same frame size.

  Here is what I have done.

          string toconcatfile = @"C:\Users\Alan\Desktop\Black.mp4";
  
          string output1 = @"C:\Users\Alan\Desktop\output1.mp4";
  
          string output2 = @"C:\Users\Alan\Desktop\output2.mp4";
  
          string finaloutput = @"C:\Users\Alan\Desktop\finaloutput.mp4";

  All the three videos have a frame rate of 25 and Video frame size yet it fails when I add in toconcatfile to the final conversion method.

  It works when its just output1 and output2 meaning there must be a different setting in toconcatfile.

  Here is what I have tried.

          FFMpegConverter fFMpeg = new FFMpegConverter();
  
  
  
  
  
          //Slices first video
  
          ConvertSettings settings = new ConvertSettings
  
          {
  
              VideoFrameRate = 25,
  
              VideoFrameSize = FrameSize.hd480,
  
              MaxDuration = startcut,
  
              AudioSampleRate = 44100
  
  
  
          };
  
  
  
          //Slices second video
  
          ConvertSettings settings2 = new ConvertSettings
  
          {
  
              VideoFrameRate = 25,
  
              VideoFrameSize = FrameSize.hd480,
  
              Seek = endcut,
  
              AudioSampleRate = 44100
  
  
  
          };
  
          //Copies framerate and size from the previous video to the concatenation video
  
          ConvertSettings settings3 = new ConvertSettings
  
          {
  
              VideoFrameRate = 25,
  
              VideoFrameSize = FrameSize.hd480,
  
              MaxDuration = 4,
  
              AppendSilentAudioStream = true,
  
              AudioSampleRate = 44100
  
  
  
          };
  
  
  
  
  
    string newblack = @"C:\Users\Alan\Desktop\newblack.mp4";
  
  
  
          //Slice method called
  
          fFMpeg.ConvertMedia(pathtofile, Format.mp4, output1, Format.mp4, settings);
  
          fFMpeg.ConvertMedia(pathtofile, Format.mp4, output2, Format.mp4, settings2);
  
          fFMpeg.ConvertMedia(toconcatfile, Format.mp4, newblack, Format.mp4, settings3);
  
  
  
          String[] inputfiles = new String[2];
  
          inputfiles[0] = output1;
  
          inputfiles[1] = newblack;
  
          //inputfiles[1] = output2;
  
  
  
  
  
          ConcatSettings concatSettings = new ConcatSettings
  
          {
  
              //CustomOutputArgs = output1+" "+ toconcatfile+ " "+output2+ " -filter_complex \"[0:v:0][0:a:0][1:v:0][1:a:0][2:v:0][2:a:0]concat=n=3:v=1:a=1[outv][outa]\" -map \"[outv]\" - map \"[outa]\""
  
          };
  
  
  
          fFMpeg.ConcatMedia(inputfiles, finaloutput, Format.mp4, concatSettings);

  Can anyone help ?

  Edit : I get the exception message - "Invalid argument (exit code : 1)",

  Here is the output log of FFMPEG

          FFMPEG LOG ITEM - ffmpeg version 3.2.2 Copyright (c) 2000-2016 the 
  
              FFmpeg developers
  
  FFMPEG LOG ITEM -   built with gcc 5.4.0 (GCC)
  
  FFMPEG LOG ITEM -   configuration: --enable-gpl --enable-version3 --enable-
  
  
  
  dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --
  
  
  
  enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
  
  FFMPEG LOG ITEM -   libavutil      55. 34.100 / 55. 34.100
  
  FFMPEG LOG ITEM -   libavcodec     57. 64.101 / 57. 64.101
  
  FFMPEG LOG ITEM -   libavformat    57. 56.100 / 57. 56.100
  
  FFMPEG LOG ITEM -   libavdevice    57.  1.100 / 57.  1.100
  
  FFMPEG LOG ITEM -   libavfilter     6. 65.100 /  6. 65.100
  
  FFMPEG LOG ITEM -   libswscale      4.  2.100 /  4.  2.100
  
  FFMPEG LOG ITEM -   libswresample   2.  3.100 /  2.  3.100
  
  FFMPEG LOG ITEM -   libpostproc    54.  1.100 / 54.  1.100
  
  FFMPEG LOG ITEM - Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Users\Alan\Desktop\output1.mp4':
  
  FFMPEG LOG ITEM -   Metadata:
  
  FFMPEG LOG ITEM -     major_brand     : isom
  
  FFMPEG LOG ITEM -     minor_version   : 512
  
  FFMPEG LOG ITEM -     compatible_brands: isomiso2avc1mp41
  
  FFMPEG LOG ITEM -     encoder         : Lavf57.56.100
  
  FFMPEG LOG ITEM -   Duration: 00:00:30.02, start: 0.000000, bitrate: 543 kb/s
  
  FFMPEG LOG ITEM -     Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 852x480 [SAR 3893:2872 DAR 276403:114880], 407 kb/s, SAR 12800:9443 DAR 320:133, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  
  FFMPEG LOG ITEM -     Metadata:
  
  FFMPEG LOG ITEM -       handler_name    : VideoHandler
  
  FFMPEG LOG ITEM -     Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 129 kb/s (default)
  
  FFMPEG LOG ITEM -     Metadata:
  
  FFMPEG LOG ITEM -       handler_name    : SoundHandler
  
  FFMPEG LOG ITEM - Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Users\Alan\Desktop\newblack.mp4':
  
  FFMPEG LOG ITEM -   Metadata:
  
  FFMPEG LOG ITEM -     major_brand     : isom
  
  FFMPEG LOG ITEM -     minor_version   : 512
  
  FFMPEG LOG ITEM -     compatible_brands: isomiso2avc1mp41
  
  FFMPEG LOG ITEM -     encoder         : Lavf57.56.100
  
  FFMPEG LOG ITEM -   Duration: 00:00:04.02, start: 0.000000, bitrate: 19 kb/s
  
  FFMPEG LOG ITEM -     Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 852x480 [SAR 160:213 DAR 4:3], 7 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  
  FFMPEG LOG ITEM -     Metadata:
  
  FFMPEG LOG ITEM -       handler_name    : VideoHandler
  
  FFMPEG LOG ITEM -     Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 2 kb/s (default)
  
  FFMPEG LOG ITEM -     Metadata:
  
  FFMPEG LOG ITEM -       handler_name    : SoundHandler
  
  FFMPEG LOG ITEM - Input #2, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Users\Alan\Desktop\output2.mp4':
  
  FFMPEG LOG ITEM -   Metadata:
  
  FFMPEG LOG ITEM -     major_brand     : isom
  
  FFMPEG LOG ITEM -     minor_version   : 512
  
  FFMPEG LOG ITEM -     compatible_brands: isomiso2avc1mp41
  
  FFMPEG LOG ITEM -     encoder         : Lavf57.56.100
  
  FFMPEG LOG ITEM -   Duration: 00:01:34.22, start: 0.000000, bitrate: 1058 kb/s
  
  FFMPEG LOG ITEM -     Stream #2:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 852x480 [SAR 3893:2872 DAR 276403:114880], 923 kb/s, SAR 12800:9443 DAR 320:133, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  
  FFMPEG LOG ITEM -     Metadata:
  
  Exception thrown: 'NReco.VideoConverter.FFMpegException' in NReco.VideoConverter.dll
  
  FFMPEG LOG ITEM -       handler_name    : VideoHandler
  
  FFMPEG LOG ITEM -     Stream #2:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
  
  FFMPEG LOG ITEM -     Metadata:
  
  FFMPEG LOG ITEM -       handler_name    : SoundHandler
  
  FFMPEG LOG ITEM - [Parsed_concat_0 @ 04ded5e0] Input link in1:v0 parameters (size 852x480, SAR 160:213) do not match the corresponding output link in0:v0 parameters (852x480, SAR 12800:9443)
  
  FFMPEG LOG ITEM - [Parsed_concat_0 @ 04ded5e0] Failed to configure output pad on Parsed_concat_0
  
  FFMPEG LOG ITEM - Error configuring complex filters.
  
  FFMPEG LOG ITEM - Invalid argument

• Non-monotonous DTS in output for audio stream using ffmpeg concat

  24 mai 2015, par Apollo Marquis

  This was asked in FFMPEG - Non-Monotonous DTS on concat. But the poster simply opted for MP4Box after getting no reply. However, I would like to stick with ffmpeg which I think is quicker.

  I am concatenating files from a text file list of mp4 files that have been encoded at the same time using the same codecs so there should be no incompatibility between the files.

  I am not even sure what Non-monotonous DTS is (anyone ?) but I am worried it may produce some glitches in the concatenated files. They seem ok but there is some evidence of artefacts in the sound. Can I tweak my command line to get rid of this error, and will it speed up the concatenation process ?
  I am using Python subprocess call and the file passed into this function is the list of files. The function decorator is just a timer function for profiling.
  I have tried this with my system ffmpeg not just the static build, and it has the same problem.

  @fn_timer
  
  def concat(file):
  
      proc = call(['/opt/jane_ng/jane_nodejs/ffmpeg-git-20150308-64bit-static/ffmpeg', '-f', 'concat', '-i', file, '-c', 'copy', '-y', 'testConcat.mp4'])

  When I run this, I get the following output :

  ffmpeg version N-45007-g9d7e42e-   http://johnvansickle.com/ffmpeg/    Copyright (c) 2000-2015 the FFmpeg developers
  
    built with gcc 4.9.2 (Debian 4.9.2-10)
  
    configuration: --enable-gpl --enable-version3 --disable-shared --disable-debug --enable-runtime-cpudetect --enable-libmp3lame --enable-libx264 --enable-libx265 --enable-libwebp --enable-libspeex --enable-libvorbis --enable-libvpx --enable-libfreetype --enable-fontconfig --enable-libxvid --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-gray --enable-libopenjpeg --enable-libopus --enable-libass --enable-gnutls --enable-libvidstab --cc=gcc-4.9
  
    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. 12.100 /  5. 12.100
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  [concat @ 0x31bdd80] Could not find codec parameters for stream 2 (Unknown: none): unknown codec
  
  Consider increasing the value for the 'analyzeduration' and 'probesize' options
  
  Input #0, concat, from '/opt/combinatoria/generator/concatFiles/concat.txt':
  
    Duration: N/A, start: 0.000000, bitrate: 1625 kb/s
  
      Stream #0:0: Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv), 960x540 [SAR 1:1 DAR 16:9], 1561 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
  
      Stream #0:1: Audio: aac (HE-AAC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 64 kb/s
  
      Stream #0:2: Unknown: none
  
  Output #0, mp4, to 'testConcat.mp4':
  
    Metadata:
  
      encoder         : Lavf56.25.101
  
      Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 960x540 [SAR 1:1 DAR 16:9], q=2-31, 1561 kb/s, 25 fps, 25 tbr, 90k tbn, 90k tbc
  
      Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, stereo, 64 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #0:1 -> #0:1 (copy)
  
  Press [q] to stop, [?] for help
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 253952, current: 250488; changing to 253953. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 253953, current: 252536; changing to 253954. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 754296, current: 751464; changing to 754297. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 754297, current: 753512; changing to 754298. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 974696, current: 971964; changing to 974697. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 974697, current: 974012; changing to 974698. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 1340604, current: 1337112; changing to 1340605. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 1340605, current: 1339160; changing to 1340606. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 1746712, current: 1742832; changing to 1746713. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 1746713, current: 1744880; changing to 1746714. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 2119664, current: 2116800; changing to 2119665. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 2119665, current: 2118848; changing to 2119666. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 2274496, current: 2272032; changing to 2274497. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 2274497, current: 2274080; changing to 2274498. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 2685728, current: 2683044; changing to 2685729. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 2685729, current: 2685092; changing to 2685730. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 2850980, current: 2847096; changing to 2850981. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 2850981, current: 2849144; changing to 2850982. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 3033464, current: 3030552; changing to 3033465. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 3033465, current: 3032600; changing to 3033466. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 3384856, current: 3381588; changing to 3384857. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 3384857, current: 3383636; changing to 3384858. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 3760468, current: 3757320; changing to 3760469. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 3760469, current: 3759368; changing to 3760470. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 3990792, current: 3988404; changing to 3990793. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 3990793, current: 3990452; changing to 3990794. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 4295604, current: 4291812; changing to 4295605. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 4295605, current: 4293860; changing to 4295606. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 4750564, current: 4746924; changing to 4750565. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 4750565, current: 4748972; changing to 4750566. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 5025452, current: 5022108; changing to 5025453. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 5025453, current: 5024156; changing to 5025454. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 5271964, current: 5269068; changing to 5271965. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 5271965, current: 5271116; changing to 5271966. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 5707340, current: 5704776; changing to 5707341. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 5707341, current: 5706824; changing to 5707342. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 6003784, current: 6001128; changing to 6003785. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 6003785, current: 6003176; changing to 6003786. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 6371816, current: 6368040; changing to 6371817. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 6371817, current: 6370088; changing to 6371818. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 6875944, current: 6872544; changing to 6875945. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 6875945, current: 6874592; changing to 6875946. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 7042528, current: 7040124; changing to 7042529. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 7042529, current: 7042172; changing to 7042530. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 7314556, current: 7311780; changing to 7314557. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 7314557, current: 7313828; changing to 7314558. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 7541156, current: 7537572; changing to 7541157. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 7541157, current: 7539620; changing to 7541158. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 7795620, current: 7791588; changing to 7795621. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 7795621, current: 7793636; changing to 7795622. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 8063972, current: 8059716; changing to 8063973. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 8063973, current: 8061764; changing to 8063974. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 8063974, current: 8063812; changing to 8063975. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 8350532, current: 8347248; changing to 8350533. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 8350533, current: 8349296; changing to 8350534. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 8656496, current: 8652420; changing to 8656497. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 8656497, current: 8654468; changing to 8656498. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 8902276, current: 8899380; changing to 8902277. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 8902277, current: 8901428; changing to 8902278. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 9159476, current: 9156924; changing to 9159477. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 9159477, current: 9158972; changing to 9159478. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 9468220, current: 9465624; changing to 9468221. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 9468221, current: 9467672; changing to 9468222. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 9748248, current: 9744336; changing to 9748249. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3255080] Non-monotonous DTS in output stream 0:1; previous: 9748249, current: 9746384; changing to 9748250. This may result in incorrect timestamps in the output file.
  
  frame= 5637 fps=0.0 q=-1.0 Lsize=   45617kB time=00:03:45.60 bitrate=1656.4kbits/s    
  
  video:43701kB audio:1792kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.272048%
  
  Total time running concat: 0.451297044754 seconds

  This process is absolutely key to my current project so any help or clarification would be really appreciated.