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• Volume adjust and channel merge on video using FFMPEG

  6 novembre 2015, par user1566352

  I’m trying to convert a recorded AVI (1 video stream, 2 audio streams[1st is stereo, 2nd is mono]) video file to H264/AAC.

  I want the second audio stream to be at 60% volume and the first at 100%.

  I also want to merge the first and second audio stream.

  Output should be H264 with AAC audio.

  The command I tried to use is :

  "ffmpeg.exe" 
  
    -i "input.avi" 
  
    -filter_complex " 
  
      [0:a:0]aformat=channel_layouts=stereo,volume=1.0[a1]; 
  
      [0:a:1]aformat=channel_layouts=mono,volume=0.6[a2]; 
  
      [a1][a2]amerge,pan=stereo|c0code>

  But I get the error :
  [AVFilterGraph @ 0000000ceb630c00] The following filters could not choose their formats : Parsed_amerge_4
  Consider inserting the (a)format filter near their input or output.
  Error configuring complex filters.
  Error number -5 occurred

  What am I doing wrong and how can it be fixed ?

  Complete Console Log :

  ffmpeg version N-76456-g6df2c94 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with gcc 5.2.0 (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-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --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-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib
  
    libavutil      55.  5.100 / 55.  5.100
  
    libavcodec     57. 14.100 / 57. 14.100
  
    libavformat    57. 14.100 / 57. 14.100
  
    libavdevice    57.  0.100 / 57.  0.100
  
    libavfilter     6. 14.101 /  6. 14.101
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.100 /  2.  0.100
  
    libpostproc    54.  0.100 / 54.  0.100
  
  [avi @ 000000b1cfa6bc20] non-interleaved AVI
  
  Guessed Channel Layout for  Input Stream #0.1 : stereo
  
  Guessed Channel Layout for  Input Stream #0.2 : mono
  
  Input #0, avi, from 'input.avi':
  
    Metadata:
  
      encoder         : DxtoryCore ver2.0.0.122
  
      ISRC            : Video:Lagarith Lossless Codec Audio0:Lautsprecher (2- USB Audio CODEC ) Audio1:Mikrofon (2- USB Audio CODEC )
  
    Duration: 00:27:55.60, start: 0.000000, bitrate: 181780 kb/s
  
      Stream #0:0: Video: lagarith (LAGS / 0x5347414C), rgb24, 1920x1017, 179663 kb/s, 30 fps, 30 tbr, 30 tbn, 30 tbc
  
      Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, 2 channels, s16, 1411 kb/s
  
      Stream #0:2: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, 1 channels, s16, 705 kb/s
  
  [Parsed_amerge_4 @ 000000b1cfaf3200] No channel layout for input 1
  
  Last message repeated 1 times
  
  [AVFilterGraph @ 000000b1cfa70c00] The following filters could not choose their formats: Parsed_amerge_4
  
  Consider inserting the (a)format filter near their input or output.
  
  Error configuring complex filters.
  
  Error number -5 occurred

• Fade in and Fade out drawtext and drawbox ffmpeg

  18 novembre 2015, par LostPuppy

  I am using FFmpeg on Andriod and the following is the configuration :

  ffmpeg version 2.8.2 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with Apple LLVM version 7.0.0 (clang-700.1.76)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/2.8.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-libfreetype --enable-libvorbis --enable-libvpx --enable-libass --enable-ffplay --enable-libfdk-aac --enable-libopus --enable-libquvi --enable-libx265 --enable-nonfree --enable-vda
  
    libavutil      54. 31.100 / 54. 31.100
  
    libavcodec     56. 60.100 / 56. 60.100
  
    libavformat    56. 40.101 / 56. 40.101
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 40.101 /  5. 40.101
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  2.101 /  1.  2.101
  
    libpostproc    53.  3.100 / 53.  3.100

  I am currently adding a text and background using the following command :

  ffmpeg -y -i input.mp4 -vf "drawbox=enable='between(t,2,6)':y=ih-ih/4:color=black@0.5:width=iw:height=56:t=max",\
  
  "drawtext=enable='between(t,2,6)':fontfile=roboto.ttf:y=h-h/4+10:x=20:text='Test Heading':fontcolor=white:fontsize=16,drawtext=enable='between(t,2,6)':fontfile=roboto.ttf:y=h-h/4+30:x=20:text='Test sub heading':fontcolor=white:fontsize=12" -acodec copy output.mp4

  I have tried very hard looking for an option to fade in and fade out the text and the box but can’t seem to find a solution.

• Volume adjust and channel merge on video using FFMPEG

  6 novembre 2015, par user1566352

  I’m trying to convert a recorded AVI (1 video stream, 2 audio streams[1st is stereo, 2nd is mono]) video file to H264/AAC.

  I want the second audio stream to be at 60% volume and the first at 100%.

  I also want to merge the first and second audio stream.

  Output should be H264 with AAC audio.

  The command I tried to use is :

  "ffmpeg.exe" 
  
    -i "input.avi" 
  
    -filter_complex " 
  
      [0:a:0]aformat=channel_layouts=stereo,volume=1.0[a1]; 
  
      [0:a:1]aformat=channel_layouts=mono,volume=0.6[a2]; 
  
      [a1][a2]amerge,pan=stereo|c0code>

  But I get the error :
  [AVFilterGraph @ 0000000ceb630c00] The following filters could not choose their formats : Parsed_amerge_4
  Consider inserting the (a)format filter near their input or output.
  Error configuring complex filters.
  Error number -5 occurred

  What am I doing wrong and how can it be fixed ?

  Complete Console Log :

  ffmpeg version N-76456-g6df2c94 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with gcc 5.2.0 (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-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --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-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib
  
    libavutil      55.  5.100 / 55.  5.100
  
    libavcodec     57. 14.100 / 57. 14.100
  
    libavformat    57. 14.100 / 57. 14.100
  
    libavdevice    57.  0.100 / 57.  0.100
  
    libavfilter     6. 14.101 /  6. 14.101
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.100 /  2.  0.100
  
    libpostproc    54.  0.100 / 54.  0.100
  
  [avi @ 000000b1cfa6bc20] non-interleaved AVI
  
  Guessed Channel Layout for  Input Stream #0.1 : stereo
  
  Guessed Channel Layout for  Input Stream #0.2 : mono
  
  Input #0, avi, from 'input.avi':
  
    Metadata:
  
      encoder         : DxtoryCore ver2.0.0.122
  
      ISRC            : Video:Lagarith Lossless Codec Audio0:Lautsprecher (2- USB Audio CODEC ) Audio1:Mikrofon (2- USB Audio CODEC )
  
    Duration: 00:27:55.60, start: 0.000000, bitrate: 181780 kb/s
  
      Stream #0:0: Video: lagarith (LAGS / 0x5347414C), rgb24, 1920x1017, 179663 kb/s, 30 fps, 30 tbr, 30 tbn, 30 tbc
  
      Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, 2 channels, s16, 1411 kb/s
  
      Stream #0:2: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, 1 channels, s16, 705 kb/s
  
  [Parsed_amerge_4 @ 000000b1cfaf3200] No channel layout for input 1
  
  Last message repeated 1 times
  
  [AVFilterGraph @ 000000b1cfa70c00] The following filters could not choose their formats: Parsed_amerge_4
  
  Consider inserting the (a)format filter near their input or output.
  
  Error configuring complex filters.
  
  Error number -5 occurred