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  • ffmpeg trim .mp3 - output length forced to 2 seconds

    22 septembre 2015, par Brooks

    I have just downloaded the latest version of ffmpeg and I am trying to trim the first 14 and the last 6 seconds from a 40 seconds .mp3 file.

    The problem I have is that doesn’t matter what -t X I use, the output is always only 2 seconds in length. It’s my first using ffmpeg but it seems like something is forcing it to limit the output to 2 seconds.

    I tried a lot of commands including

    ffmpeg -ss 00:00:14.358 -i input.mp3 -ab 32k -t 00:00:20.04 -c:a copy output.mp3 -y
    

    
ffmpeg -ss 14 -i input.mp3 -ab 32k -t 20 -c:a copy output.mp3 -y
    

    
ffmpeg -ss 14 -i input.mp3 -t 20 -acodec copy output.mp3 -y
    

    
ffmpeg -ss 14 -i input.mp3 -acodec copy output.mp3 -y
    

    
ffmpeg -ss 14 -t 20 -i input.mp3 output.mp3
    

    
ffmpeg -ss 14 -i input.mp3 -t 20 output.mp3

    but the result is almost always a 2 sec mp3 file.
    Now I’m out of ideas.

    As requested this is the output from the console :

    > Input #0, mp3, from 'C:\Track7.mp3':   Duration: 00:00:40.49, start:
    
> 0.000000, bitrate: 128 kb/s
    
>     Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s Output #0, mp3, to 'C:\Track7.mp3':   Metadata:
    
>     TSSE            : Lavf57.2.100
    
>     Stream #0:0: Audio: mp3, 44100 Hz, stereo, 128 kb/s Stream mapping:   Stream #0:0 -> #0:0 (copy) Press [q] to stop, [?] for help
    
> size=       1kB time=00:00:00.00 bitrate= 752.3kbits/s video:0kB
    
> audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing
    
> overhead: 110.287079%
    
> 
    
> C:\Je>ffmpeg -ss 00:00:14.358 -i "C:\Track7.mp3" -t 5 -c:a copy
    
> "C:\Track7.mp3" -y ffmpeg version N-75463-g53e8bef Copyright (c)
    
> 2000-2015 the FFmpeg developers   built with gcc 4.9.3 (GCC)  
    
> configuration: --enable-gpl --enable-version3 --disable-w32threads
    
> --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnu tls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enab le-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 --ena ble-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --e nable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib   libavutil      55.  2.100 / 55.  2.100   libavcodec     57.  3.100 /
    
> 57.  3.100   libavformat    57.  2.100 / 57.  2.100   libavdevice    57.  0.100 / 57.  0.100   libavfilter     6.  6.100 /  6.  6.100   libswscale      4.  0.100 /  4.  0.100   libswresample   2.  0.100 / 
    
> 2.  0.100   libpostproc    54.  0.100 / 54.  0.100 [mp3 @ 0000000002fb02c0] Skipping 0 bytes of junk at 0. [mp3 @
    
> 0000000002fb02c0] Estimating duration from bitrate, this may be
    
> inaccurate Input #0, mp3, from 'C:\Track7.mp3':   Duration:
    
> 00:00:40.49, start: 0.000000, bitrate: 128 kb/s
    
>     Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s Output #0, mp3, to 'C:\Track7.mp3':   Metadata:
    
>     TSSE            : Lavf57.2.100
    
>     Stream #0:0: Audio: mp3, 44100 Hz, stereo, 128 kb/s Stream mapping:   Stream #0:0 -> #0:0 (copy) Press [q] to stop, [?] for help
    
> size=      32kB time=00:00:02.04 bitrate= 129.5kbits/s video:0kB
    
> audio:32kB subtitle:0kB other streams:0kB global headers:0kB muxing
    
> overhead: 1.410433%
    
> 
    
> C:\Je>ffmpeg -ss 00:00:14.358 -i "C:\Track7.mp3" -c:a copy
    
> "C:\Track7.mp3" -t 5 -y ffmpeg version N-75463-g53e8bef Copyright (c)
    
> 2000-2015 the FFmpeg developers   built with gcc 4.9.3 (GCC)  
    
> configuration: --enable-gpl --enable-version3 --disable-w32threads
    
> --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnu tls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enab le-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 --ena ble-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --e nable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib   libavutil      55.  2.100 / 55.  2.100   libavcodec     57.  3.100 /
    
> 57.  3.100   libavformat    57.  2.100 / 57.  2.100   libavdevice    57.  0.100 / 57.  0.100   libavfilter     6.  6.100 /  6.  6.100   libswscale      4.  0.100 /  4.  0.100   libswresample   2.  0.100 / 
    
> 2.  0.100   libpostproc    54.  0.100 / 54.  0.100 Trailing options were found on the commandline. [mp3 @ 0000000003020300] Skipping 0
    
> bytes of junk at 0. [mp3 @ 0000000003020300] Estimating duration from
    
> bitrate, this may be inaccurate Input #0, mp3, from 'C:\Track7.mp3':  
    
> Duration: 00:00:40.49, start: 0.000000, bitrate: 128 kb/s
    
>     Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s Output #0, mp3, to 'C:\Track7.mp3':   Metadata:
    
>     TSSE            : Lavf57.2.100
    
>     Stream #0:0: Audio: mp3, 44100 Hz, stereo, 128 kb/s Stream mapping:   Stream #0:0 -> #0:0 (copy) Press [q] to stop, [?] for help
    
> size=      32kB time=00:00:02.04 bitrate= 129.5kbits/s video:0kB
    
> audio:32kB subtitle:0kB other streams:0kB global headers:0kB muxing
    
> overhead: 1.410433%
    
> 
    
> C:\Je>ffmpeg -ss 00:00:14.358 -i "C:\Track7.mp3" -c:a copy -t 5
    
> "C:\Track7.mp3" -y ffmpeg version N-75463-g53e8bef Copyright (c)
    
> 2000-2015 the FFmpeg developers   built with gcc 4.9.3 (GCC)  
    
> configuration: --enable-gpl --enable-version3 --disable-w32threads
    
> --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnu tls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enab le-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 --ena ble-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --e nable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib   libavutil      55.  2.100 / 55.  2.100   libavcodec     57.  3.100 /
    
> 57.  3.100   libavformat    57.  2.100 / 57.  2.100   libavdevice    57.  0.100 / 57.  0.100   libavfilter     6.  6.100 /  6.  6.100   libswscale      4.  0.100 /  4.  0.100   libswresample   2.  0.100 / 
    
> 2.  0.100   libpostproc    54.  0.100 / 54.  0.100 [mp3 @ 00000000003102c0] Skipping 0 bytes of junk at 0. [mp3 @
    
> 00000000003102c0] Estimating duration from bitrate, this may be
    
> inaccurate Input #0, mp3, from 'C:\Track7.mp3':   Duration:
    
> 00:00:40.49, start: 0.000000, bitrate: 128 kb/s
    
>     Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s Output #0, mp3, to 'C:\Track7.mp3':   Metadata:
    
>     TSSE            : Lavf57.2.100
    
>     Stream #0:0: Audio: mp3, 44100 Hz, stereo, 128 kb/s Stream mapping:   Stream #0:0 -> #0:0 (copy) Press [q] to stop, [?] for help
    
> size=      32kB time=00:00:02.04 bitrate= 129.5kbits/s video:0kB
    
> audio:32kB subtitle:0kB other streams:0kB global headers:0kB muxing
    
> overhead: 1.410433%
    
> 
    
> C:\Je>ffmpeg -ss 00:00:14.358  -t 5 -i "C:\Track7.mp3" -c:a copy
    
> "C:\Track7.mp3" -y ffmpeg version N-75463-g53e8bef Copyright (c)
    
> 2000-2015 the FFmpeg developers   built with gcc 4.9.3 (GCC)  
    
> configuration: --enable-gpl --enable-version3 --disable-w32threads
    
> --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnu tls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enab le-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 --ena ble-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --e nable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib   libavutil      55.  2.100 / 55.  2.100   libavcodec     57.  3.100 /
    
> 57.  3.100   libavformat    57.  2.100 / 57.  2.100   libavdevice    57.  0.100 / 57.  0.100   libavfilter     6.  6.100 /  6.  6.100   libswscale      4.  0.100 /  4.  0.100   libswresample   2.  0.100 / 
    
> 2.  0.100   libpostproc    54.  0.100 / 54.  0.100 [mp3 @ 0000000002fb02c0] Skipping 0 bytes of junk at 0. [mp3 @
    
> 0000000002fb02c0] Estimating duration from bitrate, this may be
    
> inaccurate Input #0, mp3, from 'C:\Track7.mp3':   Duration:
    
> 00:00:40.49, start: 0.000000, bitrate: 128 kb/s
    
>     Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s Output #0, mp3, to 'C:\Track7.mp3':   Metadata:
    
>     TSSE            : Lavf57.2.100
    
>     Stream #0:0: Audio: mp3, 44100 Hz, stereo, 128 kb/s Stream mapping:   Stream #0:0 -> #0:0 (copy) Press [q] to stop, [?] for help
    
> size=      32kB time=00:00:02.04 bitrate= 129.5kbits/s video:0kB
    
> audio:32kB subtitle:0kB other streams:0kB global headers:0kB muxing
    
> overhead: 1.410433%
    
> 
    
> C:\Je>ffmpeg -i "C:\Track7.mp3"-ss 00:00:14.358 -acodec copy
    
> "C:\Track7.mp3" -y ffmpeg version N-75463-g53e8bef Copyright (c)
    
> 2000-2015 the FFmpeg developers   built with gcc 4.9.3 (GCC)  
    
> configuration: --enable-gpl --enable-version3 --disable-w32threads
    
> --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnu tls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enab le-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 --ena ble-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --e nable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib   libavutil      55.  2.100 / 55.  2.100   libavcodec     57.  3.100 /
    
> 57.  3.100   libavformat    57.  2.100 / 57.  2.100   libavdevice    57.  0.100 / 57.  0.100   libavfilter     6.  6.100 /  6.  6.100   libswscale      4.  0.100 /  4.  0.100   libswresample   2.  0.100 / 
    
> 2.  0.100   libpostproc    54.  0.100 / 54.  0.100 C:\Track7.mp3-ss: No such file or directory
    
> 
    
> C:\Je>ffmpeg -i "C:\Track7.mp3" -ss 00:00:14.358 -acodec copy
    
> "C:\Track7.mp3" -y ffmpeg version N-75463-g53e8bef Copyright (c)
    
> 2000-2015 the FFmpeg developers   built with gcc 4.9.3 (GCC)  
    
> configuration: --enable-gpl --enable-version3 --disable-w32threads
    
> --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnu tls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enab le-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 --ena ble-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --e nable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib   libavutil      55.  2.100 / 55.  2.100   libavcodec     57.  3.100 /
    
> 57.  3.100   libavformat    57.  2.100 / 57.  2.100   libavdevice    57.  0.100 / 57.  0.100   libavfilter     6.  6.100 /  6.  6.100   libswscale      4.  0.100 /  4.  0.100   libswresample   2.  0.100 / 
    
> 2.  0.100   libpostproc    54.  0.100 / 54.  0.100 [mp3 @ 0000000002fb0240] Skipping 0 bytes of junk at 0. [mp3 @
    
> 0000000002fb0240] Estimating duration from bitrate, this may be
    
> inaccurate Input #0, mp3, from 'C:\Track7.mp3':   Duration:
    
> 00:00:40.49, start: 0.000000, bitrate: 128 kb/s
    
>     Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s Output #0, mp3, to 'C:\Track7.mp3':   Metadata:
    
>     TSSE            : Lavf57.2.100
    
>     Stream #0:0: Audio: mp3, 44100 Hz, stereo, 128 kb/s Stream mapping:   Stream #0:0 -> #0:0 (copy) Press [q] to stop, [?] for help
    
> size=       0kB time=00:00:00.00 bitrate=N/A video:0kB audio:0kB
    
> subtitle:0kB other streams:0kB global headers:0kB muxing overhead:
    
> unknown Output file is empty, nothing was encoded (check -ss / -t /
    
> -frames parameters if used)
    
> 
    
> C:\Je>ffmpeg -ss 00:00:14.358 -i "C:\Track7.mp3" -c:a copy
    
> "C:\Track7.mp3" -y ffmpeg version N-75463-g53e8bef Copyright (c)
    
> 2000-2015 the FFmpeg developers   built with gcc 4.9.3 (GCC)  
    
> configuration: --enable-gpl --enable-version3 --disable-w32threads
    
> --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnu tls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enab le-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 --ena ble-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --e nable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib   libavutil      55.  2.100 / 55.  2.100   libavcodec     57.  3.100 /
    
> 57.  3.100   libavformat    57.  2.100 / 57.  2.100   libavdevice    57.  0.100 / 57.  0.100   libavfilter     6.  6.100 /  6.  6.100   libswscale      4.  0.100 /  4.  0.100   libswresample   2.  0.100 / 
    
> 2.  0.100   libpostproc    54.  0.100 / 54.  0.100 [mp3 @ 0000000002fb0220] Skipping 0 bytes of junk at 0. [mp3 @
    
> 0000000002fb0220] Estimating duration from bitrate, this may be
    
> inaccurate Input #0, mp3, from 'C:\Track7.mp3':   Duration:
    
> 00:00:40.49, start: 0.000000, bitrate: 128 kb/s
    
>     Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s Output #0, mp3, to 'C:\Track7.mp3':   Metadata:
    
>     TSSE            : Lavf57.2.100
    
>     Stream #0:0: Audio: mp3, 44100 Hz, stereo, 128 kb/s Stream mapping:   Stream #0:0 -> #0:0 (copy) Press [q] to stop, [?] for help
    
> size=      32kB time=00:00:02.04 bitrate= 129.5kbits/s video:0kB
    
> audio:32kB subtitle:0kB other streams:0kB global headers:0kB muxing
    
> overhead: 1.410433%
    
> 
    
> C:\Je>ffmpeg -ss 00:00:14.358 -i "C:\Track7.mp3" -ab 32k -c:a copy
    
> "C:\Track7.mp3" -y ffmpeg version N-75463-g53e8bef Copyright (c)
    
> 2000-2015 the FFmpeg developers   built with gcc 4.9.3 (GCC)  
    
> configuration: --enable-gpl --enable-version3 --disable-w32threads
    
> --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnu tls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enab le-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 --ena ble-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --e nable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib   libavutil      55.  2.100 / 55.  2.100   libavcodec     57.  3.100 /
    
> 57.  3.100   libavformat    57.  2.100 / 57.  2.100   libavdevice    57.  0.100 / 57.  0.100   libavfilter     6.  6.100 /  6.  6.100   libswscale      4.  0.100 /  4.  0.100   libswresample   2.  0.100 / 
    
> 2.  0.100   libpostproc    54.  0.100 / 54.  0.100 [mp3 @ 0000000002fb02c0] Skipping 0 bytes of junk at 0. [mp3 @
    
> 0000000002fb02c0] Estimating duration from bitrate, this may be
    
> inaccurate Input #0, mp3, from 'C:\Track7.mp3':   Duration:
    
> 00:00:40.49, start: 0.000000, bitrate: 128 kb/s
    
>     Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s Output #0, mp3, to 'C:\Track7.mp3':   Metadata:
    
>     TSSE            : Lavf57.2.100
    
>     Stream #0:0: Audio: mp3, 44100 Hz, stereo, 128 kb/s Stream mapping:   Stream #0:0 -> #0:0 (copy) Press [q] to stop, [?] for help
    
> size=      32kB time=00:00:02.04 bitrate= 129.5kbits/s video:0kB
    
> audio:32kB subtitle:0kB other streams:0kB global headers:0kB muxing
    
> overhead: 1.410433%
    
> 
    
> C:\Je>ffmpeg -ss 00:00:14.358 -i "C:\Track7.mp3" -ab 32k -t
    
> 00:00:20.04 -c:a copy "C:\Track7.mp3" -y ffmpeg version
    
> N-75463-g53e8bef Copyright (c) 2000-2015 the FFmpeg developers   built
    
> with gcc 4.9.3 (GCC)   configuration: --enable-gpl --enable-version3
    
> --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnu tls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enab le-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 --ena ble-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --e nable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib   libavutil      55.  2.100 / 55.  2.100   libavcodec     57.  3.100 /
    
> 57.  3.100   libavformat    57.  2.100 / 57.  2.100   libavdevice    57.  0.100 / 57.  0.100   libavfilter     6.  6.100 /  6.  6.100   libswscale      4.  0.100 /  4.  0.100   libswresample   2.  0.100 / 
    
> 2.  0.100   libpostproc    54.  0.100 / 54.  0.100 [mp3 @ 00000000031903c0] Skipping 0 bytes of junk at 0. [mp3 @
    
> 00000000031903c0] Estimating duration from bitrate, this may be
    
> inaccurate Input #0, mp3, from 'C:\Track7.mp3':   Duration:
    
> 00:00:40.49, start: 0.000000, bitrate: 128 kb/s
    
>     Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s Output #0, mp3, to 'C:\Track7.mp3':   Metadata:
    
>     TSSE            : Lavf57.2.100
    
>     Stream #0:0: Audio: mp3, 44100 Hz, stereo, 128 kb/s Stream mapping:   Stream #0:0 -> #0:0 (copy) Press [q] to stop, [?] for help
    
> size=      32kB time=00:00:02.04 bitrate= 129.5kbits/s video:0kB
    
> audio:32kB subtitle:0kB other streams:0kB global headers:0kB muxing
    
> overhead: 1.410433%

    What am I doing wrong ?

  • Android FFMPEG java concat multiple files

    17 juillet 2015, par Kim T

    I’m using a fork of the cordova-plugin-video-editor library :

    https://github.com/jbavari/cordova-plugin-video-editor/pull/13

    Which uses the android-ffmpeg-java library here :

    https://github.com/guardianproject/android-ffmpeg-java

    The out of box cordova plugin example works well to encode a single video using the following code :

    File tempFile = File.createTempFile("ffmpeg", null, appContext.getCacheDir());
    
FfmpegController ffmpegController = new FfmpegController(appContext, tempFile);
    

    
TranscodeCallback tcCallback = new TranscodeCallback();
    

    
Clip clipIn = new Clip(videoSrcPath);
    
Clip clipOut = new Clip(outputFilePath);
    
clipOut.videoCodec = "libx264";
    
clipOut.videoFps = "24"; // tailor this to your needs
    
clipOut.videoBitrate = 512; // 512 kbps - tailor this to your needs
    
clipOut.audioChannels = 1;
    
clipOut.width = outputWidth;
    
clipOut.height = outputHeight;
    
clipOut.duration = videoDuration;
    
ffmpegController.processVideo(clipIn, clipOut, true, tcCallback);

    This calls the android-ffmpeg-java code here :

    https://github.com/guardianproject/android-ffmpeg-java/blob/master/src/org/ffmpeg/android/FfmpegController.java#L225

    They have a multiple file concat test example here :

    https://github.com/guardianproject/android-ffmpeg-java/blob/master/src/org/ffmpeg/android/test/ConcatTest.java#L16

    So I have modified the cordova plugin code to match the example :

    ArrayList<clip> listVideos = new ArrayList<clip>();
    

    
Clip clip = new Clip();
    
clip.path = new File(videoSrcPath).getCanonicalPath();
    
ffmpegController.getInfo(clip);
    
clip.duration = 5;
    
listVideos.add(clip);
    

    
Clip clip2 = new Clip();
    
clip2.path = new File(videoSrcPath2).getCanonicalPath();
    
ffmpegController.getInfo(clip2);
    
clip2.duration = 5;
    
listVideos.add(clip2);
    

    
Clip clipOut = new Clip();
    
clipOut.path = new File(outputFilePath).getCanonicalPath();
    
ffmpegController.concatAndTrimFilesMP4Stream(listVideos, clipOut, false, false, new ShellUtils.ShellCallback() {
    
    @Override
    
    public void shellOut(String shellLine) {
    
        System.out.println("fc>" + shellLine);
    
    }
    
    @Override
    
    public void processComplete(int exitValue) {
    
        if (exitValue &lt; 0)
    
            System.err.println("concat non-zero exit: " + exitValue);
    
    }
    
});
    
</clip></clip>

    However when run I get the error :

    23:15:08.498    3218-3293/com.example.hello D/VideoEditor﹕ execute method starting
    
07-10 23:15:08.498    3218-3293/com.example.hello D/VideoEditor﹕ transcodeVideo firing
    
07-10 23:15:08.499    3218-3293/com.example.hello D/VideoEditor﹕ options: {"fileUri":"content:\/\/com.android.providers.media.documents\/document\/video%3A23389","fileUri2":"content:\/\/com.android.providers.media.documents\/document\/video%3A23390","outputFileName":"1436584506888","quality":2,"outputFileType":1,"optimizeForNetworkUse":1,"duration":2}
    
07-10 23:15:08.615    3218-3293/com.example.hello D/VideoEditor﹕ videoSrcPath: /storage/emulated/0/Movies/-a.mp4
    
07-10 23:15:08.615    3218-3293/com.example.hello D/VideoEditor﹕ videoSrcPath2: /storage/emulated/0/Movies/-b.mp4
    
07-10 23:15:08.618    3218-3293/com.example.hello V/VideoEditor﹕ outputFilePath: /storage/emulated/0/Movies/HelloWorld/VID_1436584506888.mp4
    
07-10 23:15:08.618    3218-3293/com.example.hello W/PluginManager﹕ THREAD WARNING: exec() call to VideoEditor.transcodeVideo blocked the main thread for 121ms. Plugin should use CordovaInterface.getThreadPool().
    
07-10 23:15:09.126    3742-3742/? W/linker﹕ /data/data/com.example.hello/app_bin/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
    
07-10 23:15:09.506    3750-3750/? W/linker﹕ /data/data/com.example.hello/app_bin/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
    
07-10 23:15:09.836    3218-3264/com.example.hello I/System.out﹕ fc>/data/data/com.example.hello/app_bin/ffmpeg -y -t 0 0 : 0 0 : 5.000000 -i /storage/emulated/0/Movies/-a.mp4 -f mpegts -c copy -an -bsf:v h264_mp4toannexb /storage/emulated/0/Android/data/com.example.hello/cache/ffmpeg-246029513.tmp/0.ts
    
07-10 23:15:09.864    3758-3758/? W/linker﹕ /data/data/com.example.hello/app_bin/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
    
07-10 23:15:09.865    3218-3759/com.example.hello I/System.out﹕ fc>WARNING: linker: /data/data/com.example.hello/app_bin/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
    
07-10 23:15:09.869    3218-3759/com.example.hello I/System.out﹕ fc>ffmpeg version 0.11.1 Copyright (c) 2000-2012 the FFmpeg developers
    
07-10 23:15:09.870    3218-3759/com.example.hello I/System.out﹕ fc>  built on Dec 22 2014 12:52:34 with gcc 4.6 20120106 (prerelease)
    
07-10 23:15:09.870    3218-3759/com.example.hello I/System.out﹕ fc>  configuration: --arch=arm --cpu=cortex-a8 --target-os=linux --enable-runtime-cpudetect --prefix=/data/data/info.guardianproject.ffmpeg/app_opt --enable-pic --disable-shared --enable-static --cross-prefix=/home/n8fr8/dev/android/ndk/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/arm-linux-androideabi- --sysroot=/home/n8fr8/dev/android/ndk/platforms/android-16/arch-arm --extra-cflags='-I../x264 -mfloat-abi=softfp -mfpu=neon -fPIE -pie' --extra-ldflags='-L../x264 -fPIE -pie' --enable-version3 --enable-gpl --disable-doc --enable-yasm --enable-decoders --enable-encoders --enable-muxers --enable-demuxers --enable-parsers --enable-protocols --enable-filters --enable-avresample --enable-libfreetype --disable-indevs --enable-indev=lavfi --disable-outdevs --enable-hwaccels --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --disable-network --enable-libx264 --enable-zlib
    
07-10 23:15:09.870    3218-3759/com.example.hello I/System.out﹕ fc>  libavutil      51. 54.100 / 51. 54.100
    
07-10 23:15:09.870    3218-3759/com.example.hello I/System.out﹕ fc>  libavcodec     54. 23.100 / 54. 23.100
    
07-10 23:15:09.870    3218-3759/com.example.hello I/System.out﹕ fc>  libavformat    54.  6.100 / 54.  6.100
    
07-10 23:15:09.870    3218-3759/com.example.hello I/System.out﹕ fc>  libavdevice    54.  0.100 / 54.  0.100
    
07-10 23:15:09.870    3218-3759/com.example.hello I/System.out﹕ fc>  libavfilter     2. 77.100 /  2. 77.100
    
07-10 23:15:09.870    3218-3759/com.example.hello I/System.out﹕ fc>  libswscale      2.  1.100 /  2.  1.100
    
07-10 23:15:09.870    3218-3759/com.example.hello I/System.out﹕ fc>  libswresample   0. 15.100 /  0. 15.100
    
07-10 23:15:09.870    3218-3759/com.example.hello I/System.out﹕ fc>  libpostproc    52.  0.100 / 52.  0.100
    
07-10 23:15:09.870    3218-3759/com.example.hello I/System.out﹕ fc>[NULL @ 0xb6421100] Unable to find a suitable output format for '0'
    
07-10 23:15:09.870    3218-3759/com.example.hello I/System.out﹕ fc>0: Invalid argument
    
07-10 23:15:09.891    3218-3264/com.example.hello I/System.out﹕ fc>/data/data/com.example.hello/app_bin/ffmpeg -y -t 0 0 : 0 0 : 5.000000 -i /storage/emulated/0/Movies/-b.mp4 -f mpegts -c copy -an -bsf:v h264_mp4toannexb /storage/emulated/0/Android/data/com.example.hello/cache/ffmpeg-246029513.tmp/1.ts
    
07-10 23:15:09.912    3762-3762/? W/linker﹕ /data/data/com.example.hello/app_bin/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
    
07-10 23:15:09.913    3218-3763/com.example.hello I/System.out﹕ fc>WARNING: linker: /data/data/com.example.hello/app_bin/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
    
07-10 23:15:09.917    3218-3763/com.example.hello I/System.out﹕ fc>ffmpeg version 0.11.1 Copyright (c) 2000-2012 the FFmpeg developers
    
07-10 23:15:09.917    3218-3763/com.example.hello I/System.out﹕ fc>  built on Dec 22 2014 12:52:34 with gcc 4.6 20120106 (prerelease)
    
07-10 23:15:09.918    3218-3763/com.example.hello I/System.out﹕ fc>  configuration: --arch=arm --cpu=cortex-a8 --target-os=linux --enable-runtime-cpudetect --prefix=/data/data/info.guardianproject.ffmpeg/app_opt --enable-pic --disable-shared --enable-static --cross-prefix=/home/n8fr8/dev/android/ndk/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/arm-linux-androideabi- --sysroot=/home/n8fr8/dev/android/ndk/platforms/android-16/arch-arm --extra-cflags='-I../x264 -mfloat-abi=softfp -mfpu=neon -fPIE -pie' --extra-ldflags='-L../x264 -fPIE -pie' --enable-version3 --enable-gpl --disable-doc --enable-yasm --enable-decoders --enable-encoders --enable-muxers --enable-demuxers --enable-parsers --enable-protocols --enable-filters --enable-avresample --enable-libfreetype --disable-indevs --enable-indev=lavfi --disable-outdevs --enable-hwaccels --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --disable-network --enable-libx264 --enable-zlib
    
07-10 23:15:09.918    3218-3763/com.example.hello I/System.out﹕ fc>  libavutil      51. 54.100 / 51. 54.100
    
07-10 23:15:09.918    3218-3763/com.example.hello I/System.out﹕ fc>  libavcodec     54. 23.100 / 54. 23.100
    
07-10 23:15:09.918    3218-3763/com.example.hello I/System.out﹕ fc>  libavformat    54.  6.100 / 54.  6.100
    
07-10 23:15:09.918    3218-3763/com.example.hello I/System.out﹕ fc>  libavdevice    54.  0.100 / 54.  0.100
    
07-10 23:15:09.918    3218-3763/com.example.hello I/System.out﹕ fc>  libavfilter     2. 77.100 /  2. 77.100
    
07-10 23:15:09.918    3218-3763/com.example.hello I/System.out﹕ fc>  libswscale      2.  1.100 /  2.  1.100
    
07-10 23:15:09.918    3218-3763/com.example.hello I/System.out﹕ fc>  libswresample   0. 15.100 /  0. 15.100
    
07-10 23:15:09.918    3218-3763/com.example.hello I/System.out﹕ fc>  libpostproc    52.  0.100 / 52.  0.100
    
07-10 23:15:09.918    3218-3763/com.example.hello I/System.out﹕ fc>[NULL @ 0xb6321100] Unable to find a suitable output format for '0'
    
07-10 23:15:09.918    3218-3763/com.example.hello I/System.out﹕ fc>0: Invalid argument
    
07-10 23:15:09.940    3218-3264/com.example.hello I/System.out﹕ fc>/data/data/com.example.hello/app_bin/ffmpeg -y -i concat:/storage/emulated/0/Android/data/com.example.hello/cache/ffmpeg-246029513.tmp/0.ts|/storage/emulated/0/Android/data/com.example.hello/cache/ffmpeg-246029513.tmp/1.ts -c copy -an /storage/emulated/0/Movies/HelloWorld/VID_1436584506888.mp4
    
07-10 23:15:09.963    3766-3766/? W/linker﹕ /data/data/com.example.hello/app_bin/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
    
07-10 23:15:09.964    3218-3767/com.example.hello I/System.out﹕ fc>WARNING: linker: /data/data/com.example.hello/app_bin/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
    
07-10 23:15:09.971    3218-3767/com.example.hello I/System.out﹕ fc>ffmpeg version 0.11.1 Copyright (c) 2000-2012 the FFmpeg developers
    
07-10 23:15:09.972    3218-3767/com.example.hello I/System.out﹕ fc>  built on Dec 22 2014 12:52:34 with gcc 4.6 20120106 (prerelease)
    
07-10 23:15:09.972    3218-3767/com.example.hello I/System.out﹕ fc>  configuration: --arch=arm --cpu=cortex-a8 --target-os=linux --enable-runtime-cpudetect --prefix=/data/data/info.guardianproject.ffmpeg/app_opt --enable-pic --disable-shared --enable-static --cross-prefix=/home/n8fr8/dev/android/ndk/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/arm-linux-androideabi- --sysroot=/home/n8fr8/dev/android/ndk/platforms/android-16/arch-arm --extra-cflags='-I../x264 -mfloat-abi=softfp -mfpu=neon -fPIE -pie' --extra-ldflags='-L../x264 -fPIE -pie' --enable-version3 --enable-gpl --disable-doc --enable-yasm --enable-decoders --enable-encoders --enable-muxers --enable-demuxers --enable-parsers --enable-protocols --enable-filters --enable-avresample --enable-libfreetype --disable-indevs --enable-indev=lavfi --disable-outdevs --enable-hwaccels --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --disable-network --enable-libx264 --enable-zlib
    
07-10 23:15:09.973    3218-3767/com.example.hello I/System.out﹕ fc>  libavutil      51. 54.100 / 51. 54.100
    
07-10 23:15:09.973    3218-3767/com.example.hello I/System.out﹕ fc>  libavcodec     54. 23.100 / 54. 23.100
    
07-10 23:15:09.974    3218-3767/com.example.hello I/System.out﹕ fc>  libavformat    54.  6.100 / 54.  6.100
    
07-10 23:15:09.974    3218-3767/com.example.hello I/System.out﹕ fc>  libavdevice    54.  0.100 / 54.  0.100
    
07-10 23:15:09.974    3218-3767/com.example.hello I/System.out﹕ fc>  libavfilter     2. 77.100 /  2. 77.100
    
07-10 23:15:09.975    3218-3767/com.example.hello I/System.out﹕ fc>  libswscale      2.  1.100 /  2.  1.100
    
07-10 23:15:09.976    3218-3767/com.example.hello I/System.out﹕ fc>  libswresample   0. 15.100 /  0. 15.100
    
07-10 23:15:09.976    3218-3767/com.example.hello I/System.out﹕ fc>  libpostproc    52.  0.100 / 52.  0.100
    
07-10 23:15:09.976    3218-3767/com.example.hello I/System.out﹕ fc>concat:/storage/emulated/0/Android/data/com.example.hello/cache/ffmpeg-246029513.tmp/0.ts|/storage/emulated/0/Android/data/com.example.hello/cache/ffmpeg-246029513.tmp/1.ts: Not a directory
    
07-10 23:15:09.981    3218-3264/com.example.hello D/VideoEditor﹕ transcode exception
    
    java.lang.Exception: There was a problem rendering the video: /storage/emulated/0/Movies/HelloWorld/VID_1436584506888.mp4
    
            at org.ffmpeg.android.FfmpegController.concatAndTrimFilesMP4Stream(FfmpegController.java:1272)
    
            at org.apache.cordova.videoeditor.VideoEditor$1.run(VideoEditor.java:257)
    
            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
    
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
    
            at java.lang.Thread.run(Thread.java:818)

    I’m not sure why it says ’Not a directory’ ? Surely it’s valid because the files are created at the previous step ?

  • ffmpeg merge wav-audio and rtmp-video stream with itsoffset parameter ?

    2 juillet 2015, par whatis01

    I tried to merge WAV audio and RTMP video stream with -itsoffset parameter :

    ffmpeg -i rtmp://server/video/stream_folder/stream_id -itsoffset 00:00:15.0000 -i /audio/1227121.wav \
    
-codec:v copy -ac 2 -codec:a aac -strict experimental -f flv rtmp://server/sfolder/test_1

    But it works inappropriately (RTMP output is not steady, only voice or only video), and always prompts : mux overhead ratio 2000%, then conversion failed.

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