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• How can I skip an image error when trimming an mp3 with ffmpeg

  29 septembre 2016, par John Pollard

  I am running the following command to get cut a 30 second section of the file

  ffmpeg -i 'river.mp3' -ss 30 -t 30 -acodec libmp3lame -b:a 128k 'audio_trimmed.mp3'

  but I am getting a "Invalid PNG signature" error. Is there a way to skip the image since I don’t need it and have the command run successfully ?

  ffmpeg version 2.8.5 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with Apple LLVM version 7.3.0 (clang-703.0.31)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/2.8.5 --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-libvorbis --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
  
  [mp3 @ 0x7f8419010600] Skipping 0 bytes of junk at 73436.
  
  [png @ 0x7f8419812600] Invalid PNG signature 0xFFD8FFE000104A46.
  
  [mp3 @ 0x7f8419010600] decoding for stream 1 failed
  
  [mp3 @ 0x7f8419010600] Could not find codec parameters for stream 1 (Video: png, none(pc)): unspecified size
  
  Consider increasing the value for the 'analyzeduration' and 'probesize' options
  
  Input #0, mp3, from 'river.mp3':
  
    Metadata:
  
      genre           : Podcast
  
      album           : River City Church's Podcast
  
      artist          : Antley Fowler
  
      title           : Jubilee Brings Justice
  
      date            : 2016-08-15 10:23
  
    Duration: 00:28:28.07, start: 0.025056, bitrate: 64 kb/s
  
      Stream #0:0: Audio: mp3, 44100 Hz, mono, s16p, 64 kb/s
  
      Stream #0:1: Video: png, none(pc), 90k tbr, 90k tbn, 90k tbc
  
      Metadata:
  
        title           : Episode Artwork
  
        comment         : Cover (front)
  
  [buffer @ 0x7f8418c18de0] Unable to parse option value "0x0" as image size
  
  [buffer @ 0x7f8418c18de0] Unable to parse option value "-1" as pixel format
  
  [buffer @ 0x7f8418c18de0] Unable to parse option value "0x0" as image size
  
  [buffer @ 0x7f8418c18de0] Error setting option video_size to value 0x0.
  
  [graph 0 input from stream 0:1 @ 0x7f8418c18ee0] Error applying options to the filter.
  
  Error opening filters!

• Automatic encoder selection failed for output stream #0:0 [duplicate]

  2 octobre 2016, par mgt1234

  This question already has an answer here :

  • recompile ffmpeg with libmp3lame
    
    1 answer
    

  I use this command on ffmpeg :

  /usr/local/bin/ffmpeg -ss 40 -t 40 -i mymusic.mp3 -ab 15 voice.mp3 2>&1

  but I see this error :

  Automatic encoder selection failed for output stream #0:0. Default encoder for format mp3 (codec png) is probably disabled. Please choose an encoder manually. Error selecting an encoder for stream 0:0

  Also lamemp3 installed and enabled, how can I fix it ?

  this is complete output :

  ffmpeg version N-81842-g0fbd423 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-17)
  
    configuration: --enable-decoder=png --enable-encoder=png
  
    libavutil      55. 32.100 / 55. 32.100
  
    libavcodec     57. 60.101 / 57. 60.101
  
    libavformat    57. 51.102 / 57. 51.102
  
    libavdevice    57.  0.102 / 57.  0.102
  
    libavfilter     6. 63.100 /  6. 63.100
  
    libswscale      4.  1.100 /  4.  1.100
  
    libswresample   2.  2.100 /  2.  2.100
  
  [mp3 @ 0x3ccd3c0] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mp3, from 'mymusic.mp3':
  
    Metadata:
  
      album_artist    : .:.:. WWW.NEWSONG3.COM .:.:.
  
      title           : Eshtebah .:.:. WWW.NEWSONG3.COM .:.:.
  
      artist          : Abolfazl Fallah .:.:. WWW.NEWSONG3.COM .:.:.
  
      album           : .:.:. WWW.NEWSONG3.COM .:.:.
  
      comment         : .:.:. WWW.NEWSONG3.COM .:.:.
  
      genre           : .:.:. WWW.NEWSONG3.COM .:.:.
  
      track           : .:.:. WWW.NEWSONG3.COM .:.:.
  
      copyright       : .:.:. WWW.NEWSONG3.COM .:.:.
  
      TOPE            : .:.:. WWW.NEWSONG3.COM .:.:.
  
      composer        : .:.:. WWW.NEWSONG3.COM .:.:.
  
      TBPM            : .:.:. WWW.NEWSONG3.COM .:.:.
  
      TIT3            : .:.:. WWW.NEWSONG3.COM .:.:.
  
      encoded_by      : .:.:. WWW.NEWSONG3.COM .:.:.
  
      disc            : .:.:. WWW.NEWSONG3.COM .:.:.
  
      MusicMatch_Mood : .:.:. WWW.NEWSONG3.COM .:.:.
  
      date            : 2013
  
    Duration: 00:04:08.77, start: 0.000000, bitrate: 129 kb/s
  
      Stream #0:0: Audio: mp3, 48000 Hz, stereo, s16p, 128 kb/s
  
      Stream #0:1: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 300x300 [SAR 96:96 DAR 1:1], 90k tbr, 90k tbn, 90k tbc
  
      Metadata:
  
        comment         : Cover (front)
  
  Automatic encoder selection failed for output stream #0:0. Default encoder for format mp3 (codec png) is probably disabled. Please choose an encoder manually.
  
  Error selecting an encoder for stream 0:0

• Proprietary codecs on Linux. What is legal ?

  17 octobre 2016, par George Eco

  So, assuming we got a distribution without proprietary codecs installed.
  Let’s take Linux Mint for example. I want to store and playback wav and ogg format sounds, either by using my own software, or by using another developer’s software. So far so good right ?

  Imagine now that we have the following scenario. For some reason, I wanna playback a file that is either an mp4 or mp3 or mpeg or any other format, made by proprietary codecs. Instantly, I will need a codec for these formats.

  I read somewhere that Fluendo sells solutions for "legal codec usage" for linux distros.
  URL of fluendo : http://www.fluendo.com/en/

  So here comes the questions :

  Using VLC and ffmpeg is enough for me to convert a file to an ogg or ogv so I can playback a song or a video using an open format. You can also playback playback files made by proprietary formats. But are VLC and ffmpeg legal to use, to playback such files made by proprietary codecs ? For example, ss VLC codecs okay to be used without paying anyone for mp4 playback ? Is it okay to convert a file from mp4 to ogv ?
  If not, are there any legal and open source and free (as in freedom) codecs around that can solve the issue, or does someone have to pay a product, to be ethically correct, to the developers of the proprietaty codecs ?

  Note that I do not ask for Windows, since codec licenses are included to the price of the operating system. I ask exclusively for a free linux distribution.