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• FFMPEG - Non-monotonous DTS in output stream 0:0 ;

  5 juin 2019, par Arigato Manga

  I’m getting the below error when trying to merge 2 video files using ffmpeg

  Non-monotonous DTS in output stream 0:0;

  I have tried the below solutions but none of them helped,

  1. Converting the input videos to mts files and then merging
  2. Separating the audio and video channels and merging them
     individually

  Both the input files are separate splits from 2 different 2 hour long videos.

  After the DTS error I played the input files and both of them have a pause/struck type scene at the end of the video, which I think might be because of the improper split times.

  Below is the split command I used,

  ffmpeg -i input1.mp4 -ss <starttime> -t <duration> -c copy one.mp4
  
  ffmpeg -i input2.mp4 -ss <starttime> -t <duration> -c copy two.mp4
  
  </duration></starttime></duration></starttime>

  What I want is,

  1. Is there any way to avoid this error
  2. Is there an option in ffmpeg which will split the file to the nearest frame so that it will not create such pause/struck video

  Below is the ffmpeg output of the input video files that are merged,

  one.mp4

  ffmpeg version N-92995-g62f8d27ef1 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 8.2.1 (GCC) 20181201
  
    configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
  
    libavutil      56. 26.100 / 56. 26.100
  
    libavcodec     58. 44.100 / 58. 44.100
  
    libavformat    58. 26.100 / 58. 26.100
  
    libavdevice    58.  6.101 / 58.  6.101
  
    libavfilter     7. 48.100 /  7. 48.100
  
    libswscale      5.  4.100 /  5.  4.100
  
    libswresample   3.  4.100 /  3.  4.100
  
    libpostproc    55.  4.100 / 55.  4.100
  
  Output #0, mp4, to '.\3.mp4':
  
  Output file #0 does not contain any stream

  two.mp4

  ffmpeg version N-92995-g62f8d27ef1 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 8.2.1 (GCC) 20181201
  
    configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
  
    libavutil      56. 26.100 / 56. 26.100
  
    libavcodec     58. 44.100 / 58. 44.100
  
    libavformat    58. 26.100 / 58. 26.100
  
    libavdevice    58.  6.101 / 58.  6.101
  
    libavfilter     7. 48.100 /  7. 48.100
  
    libswscale      5.  4.100 /  5.  4.100
  
    libswresample   3.  4.100 /  3.  4.100
  
    libpostproc    55.  4.100 / 55.  4.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '.\26.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.26.100
  
    Duration: 00:00:11.01, start: 0.009002, bitrate: 429 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x640 [SAR 1:1 DAR 2:1], 342 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
  
      Metadata:
  
        handler_name    : ISO Media file produced by Google Inc. Created on: 06/04/2019.
  
      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
  
      Metadata:
  
        handler_name    : ISO Media file produced by Google Inc. Created on: 06/04/2019.
  
  At least one output file must be specified

  Thanks in advance.

• fastest ffmpeg without caring about quality

  31 mai 2019, par RedDeath

  I would like to convert any video into .mp4 as fast as possible without caring about quality loss. I have used the next commands with which I have been able to finish the process in 37 seconds for a 10 second video.

  -vcodec h264
  
  -crf 32
  
  -preset ultrafast

  However 37 seconds is still too long for a 10 seconds video. Is there any improvements that I can do to the command in order to reduce the execution time ?

  ---

  Edit (Extra info) :

  I’m using FFmpeg Android (implementation 'com.writingminds:FFmpegAndroid:0.3.2') even though commands usually work for any FFmpeg (with a few variants depending on the FFmpeg version).

  The command used in my case which gave me the fastest result so far is :

      mFfmpeg.execute(
  
          arrayOf(
  
              "-i" , videoCopy?.path,
  
              "-vcodec", "h264",
  
              "-crf", "32",
  
              "-preset", "ultrafast",
  
              "-y", uploadFile?.path), 
  
          object : ExecuteBinaryResponseHandler() { ... }

  Which for regular FFmpeg command would be

  "-ffmpeg -i {video?.path} -vcodec h264 -crf 32 -preset ultrafast -y {uploadFile?.path}"

  Where video is my original video File and uploadFile is the File where I want to save the result into.

  In a Samsung J3 (SM-J320M, you can find its specifications online) such command takes the aforementioned 37 seconds.

  After executing such command the first onProgress message returned by FFmpeg prints :

  ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers  built with gcc 4.8 (GCC)  
  
  configuration: 
  
      --target-os=linux 
  
      --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- 
  
      --arch=arm 
  
      --cpu=cortex-a8 
  
      --enable-runtime-cpudetect 
  
      --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot 
  
      --enable-pic 
  
      --enable-libx264 
  
      --enable-libass 
  
      --enable-libfreetype 
  
      --enable-libfribidi 
  
      --enable-libmp3lame 
  
      --enable-fontconfig 
  
      --enable-pthreads 
  
      --disable-debug 
  
      --disable-ffserver 
  
      --enable-version3 
  
      --enable-hardcoded-tables 
  
      --disable-ffplay 
  
      --disable-ffprobe 
  
      --enable-gpl 
  
      --enable-yasm 
  
      --disable-doc 
  
      --disable-shared 
  
      --enable-static 
  
      --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config 
  
      --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a 
  
      --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' 
  
      --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' 
  
      --extra-libs='-lpng -lexpat -lm' 
  
      --extra-cxxflags=  
  
          libavutil    55. 17.103 / 55. 17.103  
  
          libavcodec    57. 24.102 / 57. 24.102
  
          libavformat    57. 25.100 / 57. 25.100  
  
          libavdevice    57.  0.101 / 57.  0.101  
  
          libavfilter    6. 31.100 /  6. 31.100  
  
          libswscale      4.  0.100 /  4.  0.100  
  
          libswresample   2.  0.101 /  2.  0.101  
  
          libpostproc    54.  0.100 / 54.  0.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/DCIM/Yakatak/656.mp4':  Metadata:    major_brand     : mp42    minor_version   : 0    compatible_brands: isommp42    creation_time   : 2019-05-29 11:27:56    location        : +51.5202-000.1435/    location-eng    : +51.5202-000.1435/  Duration: 00:00:09.47, start: 0.000000, bitrate: 12147 kb/s    Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1280x720, 11899 kb/s, 30.02 fps, 30 tbr, 90k tbn, 180k tbc (default)    Metadata:      rotate          : 90      creation_time   : 2019-05-29 11:27:56      handler_name    : VideoHandle    Side data:      displaymatrix: rotation of -90.00 degrees    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 256 kb/s (default)    Metadata:      creation_time   : 2019-05-29 11:27:56      handler_name    : SoundHandle[libx264 @ 0xb5428800] using cpu capabilities: none![libx264 @ 0xb5428800] profile Constrained Baseline, level 3.1[libx264 @ 0xb5428800] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=crf mbtree=0 crf=32.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
  
  
  
  Output #0, mp4, to '/storage/emulated/0/DCIM/Yakatak/uploadFile.mp4':  Metadata:    major_brand     : mp42    minor_version   : 0    compatible_brands: isommp42    location-eng    : +51.5202-000.1435/    location        : +51.5202-000.1435/    encoder         : Lavf57.25.100    Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 720x1280, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)    Metadata:      handler_name    : VideoHandle      creation_time   : 2019-05-29 11:27:56      encoder         : Lavc57.24.102 libx264    Side data:      unknown side data type 10 (24 bytes)    Stream #0:1(eng): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 128 kb/s (default)    Metadata:      creation_time   : 2019-05-29 11:27:56      handler_name    : SoundHandle      encoder         : Lavc57.24.102 aacStream mapping:  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))  Stream #0:1 -> #0:1 (aac (native) -> aac (native))Press [q] to stop, [?] for helpframe=    0 fps=0.0

• Converting 2-channel .mov file to .mp3 with ffmpeg

  29 mai 2019, par Josh Earl

  I use Skype Call Recorder to record Skype interviews. The app saves files in .mov format, with 2 audio channels.

  When I submit these files for transcription, they always come back with just one channel transcribed.

  I need to 1.) merge the tracks, and 2.) convert the .mov file to .mp3 format.

  Right now the command I’m working with is :

  ffmpeg -i input.mov -map 0:a output.mp3

  I get the following errors :

   Invalid audio stream. Exactly one MP3 audio stream is required.
  
   Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument

  What am I missing ?

  Here’s the full console output, if it helps :

  ffmpeg version 2.6.2 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with Apple LLVM version 6.1.0 (clang-602.0.49) (based on LLVM 3.6.0svn)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/2.6.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-vda
  
    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. 11.102 /  5. 11.102
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mov':
  
    Metadata:
  
      major_brand     : qt
  
      minor_version   : 537199360
  
      compatible_brands: qt
  
      creation_time   : 2019-05-18 15:00:59
  
    Duration: 00:11:41.82, start: 0.000000, bitrate: 120 kb/s
  
      Stream #0:0(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 58 kb/s (default)
  
      Metadata:
  
        creation_time   : 2019-05-18 15:00:59
  
        handler_name    : Apple Alias Data Handler
  
      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 58 kb/s (default)
  
      Metadata:
  
        creation_time   : 2019-05-18 15:00:59
  
        handler_name    : Apple Alias Data Handler
  
  [mp3 @ 0x7fd8b1003c00] Invalid audio stream. Exactly one MP3 audio stream is required.
  
  Output #0, mp3, to 'output.mp3':
  
    Metadata:
  
      major_brand     : qt
  
      minor_version   : 537199360
  
      compatible_brands: qt
  
      encoder         : Lavf56.25.101
  
      Stream #0:0(eng): Audio: mp3 (libmp3lame), 44100 Hz, mono, fltp (default)
  
      Metadata:
  
        creation_time   : 2019-05-18 15:00:59
  
        handler_name    : Apple Alias Data Handler
  
        encoder         : Lavc56.26.100 libmp3lame
  
      Stream #0:1(eng): Audio: mp3 (libmp3lame), 44100 Hz, mono, fltp (default)
  
      Metadata:
  
        creation_time   : 2019-05-18 15:00:59
  
        handler_name    : Apple Alias Data Handler
  
        encoder         : Lavc56.26.100 libmp3lame
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (aac (native) -> mp3 (libmp3lame))
  
    Stream #0:1 -> #0:1 (aac (native) -> mp3 (libmp3lame))
  
  Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument