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• How to concate videos which some have audio and some haven't audio in FFMPEG [duplicate]

  21 juin 2019, par Nikunj Paradva

  This question already has an answer here :

  • FFmpeg : concat multiple videos, some with audio, some without
    
    1 answer
    
  • FFmpeg concatenation, no Audio in Final Output
    
    1 answer
    

  What i am doing :->

  I am currently concat videos using FFMPEG. while selecting input videos I don’t know videos have audio stream or not. then i concate that videos with this command which is written below,

  I got this error because of one input have no sound stream

  What i have to do :->

  • how to check that input video have audio or not ?
  • how to concate this video inputs ?(one with audio another with no audio)
  • if possible all this thing in single command ?

  FFMPEG Command :-

   [-y,
  
     -i, /storage/emulated/0/Received/MP4_20190220_114210.mp4,
  
     -i, /storage/emulated/0/Received/VID-20190404-WA0010.mp4,
  
     -strict, experimental,
  
     -filter_complex, [0:v]scale=iw*min(854/iw\,480/ih):ih*min(854/iw\,480/ih), pad=854:480:(854-iw*min(854/iw\,480/ih))/2:(480-ih*min(854/iw\,480/ih))/2,setsar=1:1[v0];
  
                      [1:v]scale=iw*min(854/iw\,480/ih):ih*min(854/iw\,480/ih), pad=854:480:(854-iw*min(854/iw\,480/ih))/2:(480-ih*min(854/iw\,480/ih))/2,setsar=1:1[v1];
  
                      [v0][0:a][v1][1:a] concat=n=2:v=1:a=1,
  
     -preset, ultrafast,
  
     /storage/emulated/0/Video/Video_1561115811161.mp4]

  I got this Error While Executing.

  ffmpeg version n4.0-39-gda39990 Copyright (c) 2000-2018 the FFmpeg developers
  
        built with gcc 4.9.x (GCC) 20150123 (prerelease)
  
        configuration: --target-os=linux --cross-prefix=/root/bravobit/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/root/bravobit/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-ffprobe --enable-libopus --enable-libvorbis --enable-libfdk-aac --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-libvpx --enable-libass --enable-yasm --enable-pthreads --disable-debug --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-linux-perf --disable-doc --disable-shared --enable-static --enable-runtime-cpudetect --enable-nonfree --enable-network --enable-avresample --enable-avformat --enable-avcodec --enable-indev=lavfi --enable-hwaccels --enable-ffmpeg --enable-zlib --enable-gpl --enable-small --enable-nonfree --pkg-config=pkg-config --pkg-config-flags=--static --prefix=/root/bravobit/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/root/bravobit/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/root/bravobit/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-cxxflags=
  
        libavutil      56. 14.100 / 56. 14.100
  
        libavcodec     58. 18.100 / 58. 18.100
  
        libavformat    58. 12.100 / 58. 12.100
  
        libavdevice    58.  3.100 / 58.  3.100
  
        libavfilter     7. 16.100 /  7. 16.100
  
        libavresample   4.  0.  0 /  4.  0.  0
  
        libswscale      5.  1.100 /  5.  1.100
  
        libswresample   3.  1.100 /  3.  1.100
  
        libpostproc    55.  1.100 / 55.  1.100
  
      Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/Received/MP4_20190220_114210.mp4':
  
        Metadata:
  
          major_brand     : iso6
  
          minor_version   : 1
  
          compatible_brands: mp42iso6avc1isom
  
          creation_time   : 2019-02-20T06:12:15.000000Z
  
        Duration: 00:00:23.46, start: 0.000000, bitrate: 309 kb/s
  
          Stream #0:0(und): Video: h264 (avc1 / 0x31637661), yuv420p, 426x426, 243 kb/s, 24 fps, 24 tbr, 12288 tbn, 48 tbc (default)
  
          Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 32000 Hz, stereo, fltp, 64 kb/s (default)
  
      Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/Received/VID-20190404-WA0010.mp4':
  
        Metadata:
  
          major_brand     : mp42
  
          minor_version   : 1
  
          compatible_brands: mp41mp42isom
  
          creation_time   : 2018-11-24T20:20:48.000000Z
  
        Duration: 00:00:59.51, start: 0.066667, bitrate: 649 kb/s
  
          Stream #1:0(und): Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709), 640x640, 646 kb/s, 29.98 fps, 30 tbr, 15360 tbn, 60 tbc (default)
  
          Metadata:
  
            creation_time   : 2018-11-24T20:20:48.000000Z
  
            handler_name    : Core Media Video
  
      Stream specifier ':a' in filtergraph description [0:v]scale=iw*min(854/iw\,480/ih):ih*min(854/iw\,480/ih), pad=854:480:(854-iw*min(854/iw\,480/ih))/2:(480-ih*min(854/iw\,480/ih))/2,setsar=1:1[v0];[1:v]scale=iw*min(854/iw\,480/ih):ih*min(854/iw\,480/ih), pad=854:480:(854-iw*min(854/iw\,480/ih))/2:(480-ih*min(854/iw\,480/ih))/2,setsar=1:1[v1];[v0][0:a][v1][1:a] concat=n=2:v=1:a=1 matches no streams.

  Your help would be appreciated.

• Audio stuttering every couple of seconds

  27 juin 2019, par Glutch

  I’m merging a video (recorded with ffmpeg, good quality, all solid), with a musicfile.mp3. However every couple of seconds the music stutters and skips slightly. Which seems very strange since simply adding music on top of a video sounds like the engine could relax and take its time, creating no artifacts. (In comparison to recording live desktop footage). Can anyone help me sort this out ?

  System : MacOS MBP 2015, 16gb ram 2.7ghz i5

  ffmpeg -i "temp/1561246948349.mkv" -i "music/happy.mp3" -vcodec copy -filter_complex amix -map 0:v -map 0:a -map 1:a -shortest -b:a 144k "finished/2019-06-22/1561246948349/output.mkv"
  
  ffmpeg version 4.1.3 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with Apple LLVM version 10.0.1 (clang-1001.0.46.4)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/4.1.3_1 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags='-I/Library/Java/JavaVirtualMachines/adoptopenjdk-11.0.2.jdk/Contents/Home/include -I/Library/Java/JavaVirtualMachines/adoptopenjdk-11.0.2.jdk/Contents/Home/include/darwin' --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-videotoolbox --disable-libjack --disable-indev=jack --enable-libaom --enable-libsoxr
  
    libavutil      56. 22.100 / 56. 22.100
  
    libavcodec     58. 35.100 / 58. 35.100
  
    libavformat    58. 20.100 / 58. 20.100
  
    libavdevice    58.  5.100 / 58.  5.100
  
    libavfilter     7. 40.101 /  7. 40.101
  
    libavresample   4.  0.  0 /  4.  0.  0
  
    libswscale      5.  3.100 /  5.  3.100
  
    libswresample   3.  3.100 /  3.  3.100
  
    libpostproc    55.  3.100 / 55.  3.100
  
  Input #0, matroska,webm, from 'temp/1561246948349.mkv':
  
    Metadata:
  
      ENCODER         : Lavf58.20.100
  
    Duration: 00:00:21.50, start: 0.000000, bitrate: 5834 kb/s
  
      Stream #0:0: Video: h264 (High 4:4:4 Predictive), yuv422p(progressive), 2880x1800, 30 fps, 30 tbr, 1k tbn, 2000k tbc (default)
  
      Metadata:
  
        ENCODER         : Lavc58.35.100 libx264
  
        DURATION        : 00:00:21.467000000
  
      Stream #0:1: Audio: vorbis, 44100 Hz, stereo, fltp (default)
  
      Metadata:
  
        ENCODER         : Lavc58.35.100 libvorbis
  
        DURATION        : 00:00:21.496000000
  
  Input #1, mp3, from 'music/happy.mp3':
  
    Metadata:
  
      album           : Random
  
      genre           : Jazz & Blues
  
    Duration: 00:15:59.84, start: 0.025057, bitrate: 186 kb/s
  
      Stream #1:0: Audio: mp3, 44100 Hz, stereo, fltp, 186 kb/s
  
      Metadata:
  
        encoder         : LAME3.100
  
  Stream mapping:
  
    Stream #0:1 (vorbis) -> amix:input0
  
    Stream #1:0 (mp3float) -> amix:input1
  
    amix -> Stream #0:0 (libvorbis)
  
    Stream #0:0 -> #0:1 (copy)
  
  Press [q] to stop, [?] for help
  
  Output #0, matroska, to 'finished/2019-06-22/1561246948349/output.mkv':
  
    Metadata:
  
      encoder         : Lavf58.20.100
  
      Stream #0:0: Audio: vorbis (libvorbis) (oV[0][0] / 0x566F), 44100 Hz, stereo, fltp, 144 kb/s (default)
  
      Metadata:
  
        encoder         : Lavc58.35.100 libvorbis
  
      Stream #0:1: Video: h264 (High 4:4:4 Predictive) (H264 / 0x34363248), yuv422p(progressive), 2880x1800, q=2-31, 30 fps, 30 tbr, 1k tbn, 1k tbc (default)
  
      Metadata:
  
        ENCODER         : Lavc58.35.100 libx264
  
        DURATION        : 00:00:21.467000000
  
  frame=  640 fps=0.0 q=-1.0 Lsize=   15227kB time=00:00:21.46 bitrate=5810.3kbits/s speed=33.8x    
  
  video:14888kB audio:318kB subtitle:0kB other streams:0kB global headers:4kB muxing overhead: 0.139864%

• ffmpeg Output file #0 does not contain any stream when trying to access 1 of 2 audio streams

  7 juillet 2019, par nulltorpedo

  ffmpeg -i input.mkv  -map 0:2 -c copy -strict -2  audio.mkv

  Hi I have the above command. The output shows that there are 2 audio streams. I want to copy just the ac3 audio (actually I want to convert it but even this copy does not work). I have truncated the output print where there is metadata

  NEW updated sample with full log which results in same message

  ffmpeg -i input.mka -map 0:0 -c:a libfdk_aac   aac_out.m4a
  
  ffmpeg version 2.7.1 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with gcc 4.9.3 (crosstool-NG 1.20.0) 20150311 (prerelease)
  
    configuration: --prefix=/usr --incdir='${prefix}/include/ffmpeg' --arch=i686 --target-os=linux --cross-prefix=/usr/local/x86_64-pc-linux-gnu/bin/x86_64-pc-linux-gnu- --enable-cross-compile --enable-optimizations --enable-pic --enable-gpl --enable-shared --disable-static --enable-version3 --enable-nonfree --enable-libfaac --enable-encoders --enable-pthreads --disable-bzlib --disable-protocol=rtp --disable-muxer=image2 --disable-muxer=image2pipe --disable-swscale-alpha --disable-ffserver --disable-ffplay --disable-devices --disable-bzlib --disable-altivec --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libmp3lame --disable-vaapi --disable-decoder=amrnb --disable-decoder=ac3 --disable-decoder=ac3_fixed --disable-encoder=zmbv --disable-encoder=dca --disable-encoder=ac3 --disable-encoder=ac3_fixed --disable-encoder=eac3 --disable-decoder=dca --disable-decoder=eac3 --disable-decoder=truehd --cc=/usr/local/x86_64-pc-linux-gnu/bin/x86_64-pc-linux-gnu-ccache-gcc --enable-yasm --enable-libx264 --enable-encoder=libx264
  
    libavutil      54. 27.100 / 54. 27.100
  
    libavcodec     56. 41.100 / 56. 41.100
  
    libavformat    56. 36.100 / 56. 36.100
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 16.101 /  5. 16.101
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  2.100 /  1.  2.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  Input #0, matroska,webm, from '/volume1/..../input.mka':
  
    Metadata:
  
      encoder         : libebml v1.3.9 + libmatroska v1.5.2
  
      creation_time   : 2019-07-07 06:19:20
  
    Duration: 02:29:21.98, start: 0.000000, bitrate: 640 kb/s
  
      Stream #0:0(eng): Audio: ac3, 48000 Hz, 5.1(side), 640 kb/s
  
      Metadata:
  
        BPS-eng         : 640000
  
        DURATION-eng    : 02:29:21.984000480
  
        NUMBER_OF_FRAMES-eng: 280062
  
        NUMBER_OF_BYTES-eng: 716958720
  
        _STATISTICS_WRITING_APP-eng: mkvmerge v35.0.0 ('All The Love In The World') 64-bit
  
        _STATISTICS_WRITING_DATE_UTC-eng: 2019-07-07 06:19:20
  
        _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  
  Output #0, ipod, to 'aac_out.m4a':
  
    Metadata:
  
      encoder         : libebml v1.3.9 + libmatroska v1.5.2
  
  Output file #0 does not contain any stream