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  • FFMPEG results in a silent video when trying to combine video and audio tracks

    23 septembre 2017, par Stuart Clarke

    I’m using the following command to combine a video and an audio track.

    ffmpeg -y -i /var/www/temp/merged.mp4 -i /var/www/temp/combined.mp3 -strict -2 /var/www/temp/videoExtouiulbjryzxlehjj2.mp4

    Edit :

    Here is the output from the first command

    ffmpeg version 2.5.10-0ubuntu0.15.04.1 Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 4.9.2 (Ubuntu 4.9.2-10ubuntu13)
    
  configuration: --prefix=/usr --extra-version=0ubuntu0.15.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --shlibdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --enable-shared --disable-stripping --enable-avresample --enable-avisynth --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libshine --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libwavpack --enable-libwebp --enable-libxvid --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzvbi --enable-libzmq --enable-frei0r --enable-libvpx --enable-libx264 --enable-libsoxr --enable-gnutls --enable-openal --enable-libopencv --enable-librtmp --enable-libx265
    
  libavutil      54. 15.100 / 54. 15.100
    
  libavcodec     56. 13.100 / 56. 13.100
    
  libavformat    56. 15.102 / 56. 15.102
    
  libavdevice    56.  3.100 / 56.  3.100
    
  libavfilter     5.  2.103 /  5.  2.103
    
  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 '/var/www/temp/merged.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf56.15.102
    
  Duration: 00:02:31.80, start: 0.000000, bitrate: 2384 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 2381 kb/s, 25.43 fps, 29.97 tbr, 11988 tbn, 59.94 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 0 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
Input #1, mp3, from '/var/www/temp/audioTrack.mp3':
    
  Metadata:
    
    encoder         : Lavf56.15.102
    
  Duration: 00:02:08.94, start: 0.011995, bitrate: 128 kb/s
    
    Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
    
    Metadata:
    
      encoder         : Lavf
    
[libx264 @ 0x1e903a0] using SAR=1/1
    
[libx264 @ 0x1e903a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX AVX2 FMA3 LZCNT BMI2
    
[libx264 @ 0x1e903a0] profile High, level 4.0
    
[libx264 @ 0x1e903a0] 264 - core 142 r2495 6a301b6 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to '/var/www/temp/videoExtvzxvphotsyfpcbkd.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf56.15.102
    
    Stream #0:0(und): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 29.97 fps, 30k tbn, 29.97 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
      encoder         : Lavc56.13.100 libx264
    
    Stream #0:1(und): Audio: mp3 (libmp3lame) (i[0][0][0] / 0x0069), 48000 Hz, stereo, fltp (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
      encoder         : Lavc56.13.100 libmp3lame
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
  Stream #0:1 -> #0:1 (aac (native) -> mp3 (libmp3lame))
    
Press [q] to stop, [?] for help
    
frame=   31 fps=0.0 q=0.0 size=       0kB time=00:00:01.05 bitrate=   0.4kbits/s dup=1 drop=0frame=   46 fps= 41 q=0.0 size=       0kB time=00:00:01.56 bitrate=   0.2kbits/s dup=1 drop=0frame=   52 fps= 32 q=29.0 size=     149kB time=00:00:01.75 bitrate= 698.4kbits/s dup=1 drop=frame=   64 fps= 28 q=29.0 size=     258kB time=00:00:02.16 bitrate= 977.2kbits/s dup=1 drop=frame=   74 fps= 26 q=29.0 size=     389kB   
    
video:39673kB audio:211kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.143487%
    
[libx264 @ 0x1e903a0] frame I:27    Avg QP:18.78  size: 58834
    
[libx264 @ 0x1e903a0] frame P:2202  Avg QP:23.67  size: 14187
    
[libx264 @ 0x1e903a0] frame B:2323  Avg QP:25.75  size:  3356
    
[libx264 @ 0x1e903a0] consecutive B-frames: 24.7% 18.7%  9.0% 47.5%
    
[libx264 @ 0x1e903a0] mb I  I16..4: 18.8% 74.7%  6.5%
    
[libx264 @ 0x1e903a0] mb P  I16..4:  2.1%  5.0%  0.3%  P16..4: 22.2%  6.0%  1.9%  0.0%  0.0%    skip:62.5%
    
[libx264 @ 0x1e903a0] mb B  I16..4:  0.1%  0.3%  0.0%  B16..8: 19.9%  1.0%  0.1%  direct: 0.3%  skip:78.3%  L0:42.3% L1:55.3% BI: 2.4%
    
[libx264 @ 0x1e903a0] 8x8 transform intra:68.2% inter:86.5%
    
[libx264 @ 0x1e903a0] coded y,uvDC,uvAC intra: 35.8% 52.3% 4.5% inter: 5.2% 7.4% 0.0%
    
[libx264 @ 0x1e903a0] i16 v,h,dc,p: 28% 23%  8% 40%
    
[libx264 @ 0x1e903a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 20% 22%  3%  6%  6%  7%  5%  4%
    
[libx264 @ 0x1e903a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 32% 21% 14%  4%  8%  7%  7%  4%  3%
    
[libx264 @ 0x1e903a0] i8c dc,h,v,p: 56% 18% 20%  6%
    
[libx264 @ 0x1e903a0] Weighted P-Frames: Y:0.9% UV:0.2%
    
[libx264 @ 0x1e903a0] ref P L0: 73.4% 13.0% 10.0%  3.6%  0.0%
    
[libx264 @ 0x1e903a0] ref B L0: 92.2%  6.7%  1.1%
    
[libx264 @ 0x1e903a0] ref B L1: 96.6%  3.4%
    
[libx264 @ 0x1e903a0] kb/s:2139.74

    End Edit

    I know this should work since the exact line does work for other files. But the result with these is a silent video.

    I checked the audio file being used and it seemed fine when played. but I did get a weird warning when creating it. Basically I have 2 audio tracks, one is overlay music and the other is talking. I create the combined audio with this command.

    ffmpeg -y -i /var/www/temp/audioTrack.mp3 -i /var/www/temp/musicTrack.mp3 -filter_complex amerge -c:a libmp3lame -q:a 4 /var/www/temp/combined.mp3

    Here is the output from the second command.

    ffmpeg version 2.5.10-0ubuntu0.15.04.1 Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 4.9.2 (Ubuntu 4.9.2-10ubuntu13)
    
  configuration: --prefix=/usr --extra-version=0ubuntu0.15.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --shlibdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --enable-shared --disable-stripping --enable-avresample --enable-avisynth --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libshine --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libwavpack --enable-libwebp --enable-libxvid --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzvbi --enable-libzmq --enable-frei0r --enable-libvpx --enable-libx264 --enable-libsoxr --enable-gnutls --enable-openal --enable-libopencv --enable-librtmp --enable-libx265
    
  libavutil      54. 15.100 / 54. 15.100
    
  libavcodec     56. 13.100 / 56. 13.100
    
  libavformat    56. 15.102 / 56. 15.102
    
  libavdevice    56.  3.100 / 56.  3.100
    
  libavfilter     5.  2.103 /  5.  2.103
    
  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, mp3, from '/var/www/temp/audioTrack.mp3':
    
  Metadata:
    
    encoder         : Lavf56.15.102
    
  Duration: 00:02:08.89, start: 0.025057, bitrate: 128 kb/s
    
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
    
    Metadata:
    
      encoder         : Lavc56.13
    
Input #1, mp3, from '/var/www/temp/musicTrack.mp3':
    
  Metadata:
    
    encoder         : Lavf56.15.102
    
  Duration: 00:02:08.89, start: 0.025057, bitrate: 128 kb/s
    
    Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
    
    Metadata:
    
      encoder         : Lavc56.13
    
[Parsed_amerge_0 @ 0x15e3760] No channel layout for input 1
    
[Parsed_amerge_0 @ 0x15e3760] Input channel layouts overlap: output layout will be determined by the number of distinct input channels
    
Output #0, mp3, to '/var/www/temp/combined.mp3':
    
  Metadata:
    
    TSSE            : Lavf56.15.102
    
    Stream #0:0: Audio: mp3 (libmp3lame), 44100 Hz, stereo, s16p (default)
    
    Metadata:
    
      encoder         : Lavc56.13.100 libmp3lame
    
Stream mapping:
    
  Stream #0:0 (mp3) -> amerge:in0
    
  Stream #1:0 (mp3) -> amerge:in1
    
  amerge -> Stream #0:0 (libmp3lame)
    
Press [q] to stop, [?] for help
    
[libmp3lame @ 0x1601000] Trying to remove 1152 samples, but the queue is empty
    
size=    2001kB time=00:02:08.88 bitrate= 127.2kbits/s    
    
video:0kB audio:2001kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.012350%

    Of note is these sections (I believe).

    [Parsed_amerge_0 @ 0x15e3760] No channel layout for input 1
    
[Parsed_amerge_0 @ 0x15e3760] Input channel layouts overlap: output layout will be determined by the number of distinct input channels

    and

    [libmp3lame @ 0x1601000] Trying to remove 1152 samples, but the queue is empty

    As I said the output audio file sounds correct.

    The Music and Audio tracks are created with AudioSegment in python from the pydub library. I’ve used this before with no issues. The code for this is as follows.

    sound = AudioSegment.from_mp3(audio)
    
introSilence = AudioSegment.silent(duration=introLength)
    
creditsSilence = AudioSegment.silent(duration=creditsLength)
    
increasedAudio = sound + 12
    
talking = introSilence + increasedAudio + creditsSilence
    
talking.export(audioTrack, format="mp3")
    
mus = AudioSegment.from_mp3(music)
    
introMusic = mus[ : introLength]
    
videoMusic = mus[introLength - crossFade : introLength + videoLength + crossFade]
    
creditsMusic = mus[totalLength - creditsLength : totalLength]
    
lowerMusic = videoMusic - 6
    
totalMusic = introMusic.append(lowerMusic, crossfade=crossFade).append(creditsMusic, crossfade=crossFade).fade_out(fadeOut)
    
totalMusic.export(musicTrack, format="mp3")

    Here is the output of ffprobe on the 2 audio files.

    for audioTrack

    ffprobe version 2.5.10-0ubuntu0.15.04.1 Copyright (c) 2007-2016 the FFmpeg developers
    
  built with gcc 4.9.2 (Ubuntu 4.9.2-10ubuntu13)
    
  configuration: --prefix=/usr --extra-version=0ubuntu0.15.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --shlibdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --enable-shared --disable-stripping --enable-avresample --enable-avisynth --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libshine --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libwavpack --enable-libwebp --enable-libxvid --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzvbi --enable-libzmq --enable-frei0r --enable-libvpx --enable-libx264 --enable-libsoxr --enable-gnutls --enable-openal --enable-libopencv --enable-librtmp --enable-libx265
    
  libavutil      54. 15.100 / 54. 15.100
    
  libavcodec     56. 13.100 / 56. 13.100
    
  libavformat    56. 15.102 / 56. 15.102
    
  libavdevice    56.  3.100 / 56.  3.100
    
  libavfilter     5.  2.103 /  5.  2.103
    
  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, mp3, from 'temp/audioTrack.mp3':
    
  Metadata:
    
    encoder         : Lavf56.15.102
    
  Duration: 00:02:08.89, start: 0.025057, bitrate: 128 kb/s
    
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
    
    Metadata:
    
      encoder         : Lavc56.13

    and for musicTrack

    ffprobe version 2.5.10-0ubuntu0.15.04.1 Copyright (c) 2007-2016 the FFmpeg developers
    
  built with gcc 4.9.2 (Ubuntu 4.9.2-10ubuntu13)
    
  configuration: --prefix=/usr --extra-version=0ubuntu0.15.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --shlibdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --enable-shared --disable-stripping --enable-avresample --enable-avisynth --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libshine --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libwavpack --enable-libwebp --enable-libxvid --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzvbi --enable-libzmq --enable-frei0r --enable-libvpx --enable-libx264 --enable-libsoxr --enable-gnutls --enable-openal --enable-libopencv --enable-librtmp --enable-libx265
    
  libavutil      54. 15.100 / 54. 15.100
    
  libavcodec     56. 13.100 / 56. 13.100
    
  libavformat    56. 15.102 / 56. 15.102
    
  libavdevice    56.  3.100 / 56.  3.100
    
  libavfilter     5.  2.103 /  5.  2.103
    
  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, mp3, from 'temp/musicTrack.mp3':
    
  Metadata:
    
    encoder         : Lavf56.15.102
    
  Duration: 00:02:08.89, start: 0.025057, bitrate: 128 kb/s
    
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
    
    Metadata:
    
      encoder         : Lavc56.13

    I can’t see any issues with these.

    For completeness here is the ffprobe result for the combined audio track.

    ffprobe version 2.5.10-0ubuntu0.15.04.1 Copyright (c) 2007-2016 the FFmpeg developers
    
  built with gcc 4.9.2 (Ubuntu 4.9.2-10ubuntu13)
    
  configuration: --prefix=/usr --extra-version=0ubuntu0.15.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --shlibdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --enable-shared --disable-stripping --enable-avresample --enable-avisynth --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libshine --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libwavpack --enable-libwebp --enable-libxvid --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzvbi --enable-libzmq --enable-frei0r --enable-libvpx --enable-libx264 --enable-libsoxr --enable-gnutls --enable-openal --enable-libopencv --enable-librtmp --enable-libx265
    
  libavutil      54. 15.100 / 54. 15.100
    
  libavcodec     56. 13.100 / 56. 13.100
    
  libavformat    56. 15.102 / 56. 15.102
    
  libavdevice    56.  3.100 / 56.  3.100
    
  libavfilter     5.  2.103 /  5.  2.103
    
  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, mp3, from 'temp/combined.mp3':
    
  Metadata:
    
    encoder         : Lavf56.15.102
    
  Duration: 00:02:08.91, start: 0.025057, bitrate: 127 kb/s
    
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 127 kb/s
    
    Metadata:
    
      encoder         : Lavc56.13

    Any help would be much appreciated.

    Thanks,

    Stu.

  • FFMPEG conversion from MOV to MP4 Issue : Only 1st second is converted

    24 avril 2012, par Jeff

    i'm trying to convert an MOV file to MP4.
    I've tried so many options but the output file still only 1 second length.

    This is one of the FFMPEG comand I used :

    ffmpeg -i NY_BTS1PastryHQnew.mov -f mp4 -vcodec copy -acodec copy
    output.mp4

    The output.mp4 is only 1sec long.
    The output of the FFMPEG is :

    ffmpeg version git-2012-02-22-534a82a Copyright (c) 2000-2012 the FFmpeg developers
    
  built on Feb 22 2012 14:44:38 with gcc 4.4.5
    
  configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-nonfree --enable-postproc --enable-version3 --enable-x11grab
    
  libavutil      51. 40.100 / 51. 40.100
    
  libavcodec     54.  4.100 / 54.  4.100
    
  libavformat    54.  1.100 / 54.  1.100
    
  libavdevice    53.  4.100 / 53.  4.100
    
  libavfilter     2. 62.101 /  2. 62.101
    
  libswscale      2.  1.100 /  2.  1.100
    
  libswresample   0.  7.100 /  0.  7.100
    
  libpostproc    52.  0.100 / 52.  0.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'NY_BTS1PastryHQnew.mov':
    
  Metadata:
    
    major_brand     : qt  
    
    minor_version   : 512
    
    compatible_brands: qt  
    
    creation_time   : 2011-06-17 01:38:11
    
    encoder         : Lavf54.1.100
    
  Duration: 00:00:01.45, start: 0.000000, bitrate: 225 kb/s
    
    Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x720, 277 kb/s, 25 fps, 25 tbr, 2500 tbn, 5k tbc
    
    Metadata:
    
      creation_time   : 2011-06-17 01:38:11
    
      handler_name    : 
    
                        DataHandler
    
    Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, s16, 122 kb/s
    
    Metadata:
    
      creation_time   : 2011-06-17 01:38:11
    
      handler_name    : 
    
                        DataHandler
    
File 'output.mp4' already exists. Overwrite ? [y/N] y
    
Output #0, mp4, to 'output.mp4':
    
  Metadata:
    
    major_brand     : qt  
    
    minor_version   : 512
    
    compatible_brands: qt  
    
    creation_time   : 2011-06-17 01:38:11
    
    encoder         : Lavf54.1.100
    
    Stream #0:0(eng): Video: h264 (![0][0][0] / 0x0021), yuv420p, 1280x720, q=2-31, 277 kb/s, 25 fps, 2500 tbn, 2500 tbc
    
    Metadata:
    
      creation_time   : 2011-06-17 01:38:11
    
      handler_name    : 
    
                        DataHandler
    
    Stream #0:1(eng): Audio: aac (@[0][0][0] / 0x0040), 48000 Hz, stereo, 122 kb/s
    
    Metadata:
    
      creation_time   : 2011-06-17 01:38:11
    
      handler_name    : 
    
                        DataHandler
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #0:1 -> #0:1 (copy)
    
Press [q] to stop, [?] for help
    
frame=   12 fps=  0 q=-1.0 Lsize=      40kB time=00:00:00.40 bitrate= 814.6kbits/s    
    
video:16kB audio:22kB global headers:0kB muxing overhead 4.766554%

    I can't see any error, do you have a clue ?

    Thanks

  • transcoding from amr to flac using JAVE(ffmpeg)

    25 avril 2012, par user824440

    I want to transcode amr audio files to flac using JAVE (http://www.sauronsoftware.it/projects/jave/). it uses ffmpeg to do the job.

    The transcoding procedure runs successfully on Windows but fails on Linux (centOS).

    I checked the JAVE code and found it uses the following command :

    ffmpeg -i 1.amr -vn -acodec flac -ac 1 -ar 8000 -f flac -y 1.flac

    the output is :

    FFmpeg version SVN-r11179, Copyright (c) 2000-2007 Fabrice Bellard, et al.
    
  configuration: --enable-gpl --enable-pp --enable-swscaler --enable-pthreads --enable-libfaac --enable-libfaad --enable-libmp3lame --enable-libtheora --enable-memalign-hack --extra-ldflags=-static -lm -lz
    

    
libavutil version: 49.5.0
    

    
libavcodec version: 51.48.0
    

    
libavformat version: 52.1.0
    

    
built on Dec  7 2007 15:35:14, gcc: 4.1.2 20070626 (Red Hat 4.1.2-14)
    

    
Input #0, amr, from '1.amr':
    

    
Duration: N/A, bitrate: N/A
    

    
Stream #0.0: Audio: samr / 0x726D6173, 8000 Hz, mono
    

    
Input #1, amr, from '1.amr':
    

    
Duration: N/A, bitrate: N/A
    

    
Stream #1.0: Audio: samr / 0x726D6173, 8000 Hz, mono
    

    
Output #0, flac, to '1.flacffmpeg':
    

    
Stream #0.0: Audio: flac, 8000 Hz, mono, 64 kb/s
    

    
Output #1, flac, to '1.flac':
    

    
Stream #1.0: Audio: flac, 8000 Hz, mono, 64 kb/s
    

    
Stream mapping:
    

    
Stream #0.0 -> #0.0
    

    
Stream #1.0 -> #1.0
    

    
Unsupported codec (id=73728) for input stream #0.0

    So the problem might be unsuppported codec ? How to solve this ?
    Thanks.

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