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    13 mai 2011, par

    Dixit Wikipedia, XMP signifie :
    Extensible Metadata Platform ou XMP est un format de métadonnées basé sur XML utilisé dans les applications PDF, de photographie et de graphisme. Il a été lancé par Adobe Systems en avril 2001 en étant intégré à la version 5.0 d’Adobe Acrobat.
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  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

  • Installation en mode ferme

    4 février 2011, par

    Le mode ferme permet d’héberger plusieurs sites de type MediaSPIP en n’installant qu’une seule fois son noyau fonctionnel.
    C’est la méthode que nous utilisons sur cette même plateforme.
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Sur d’autres sites (4537)

  • ffmpeg with many input and filters

    11 novembre 2017, par Nabi K.A.Z.

    I use this command :

    ffmpeg -i main.mp3 -i 1.mp3 -i 2.mp3 -i 3.mp3 \
    
       -filter_complex "\
    
          [0]volume=1[a0]; \
    
          [1]adelay=1000[a1]; \
    
          [2]adelay=2000[a2]; \
    
          [3]adelay=3000[a3]; \
    
          [a0][a1][a2][a3]amix=4:duration=first" \
    
-y merged.mp3

    But I have many input. more than 500. so my pattern is be like this :

    ffmpeg -i main.mp3 -i 1.mp3 -i 2.mp3 -i 3.mp3 ... [n.mp3] \
    
       -filter_complex "\
    
          [0]volume=1[a0]; \
    
          [1]adelay=1000[a1]; \
    
          [2]adelay=2000[a2]; \
    
          [3]adelay=3000[a3]; \
    
          :
    
          :
    
          [n]adelay=1000000[aN]; \
    
          [a0][a1][a2][a3] ... [aN] amix=[n]:duration=first" \
    
-y merged.mp3

    But I get errors in any platform.

    Linux :

    :
    
:
    
Input #200, mp3, from 'sounds2/200.mp3':
    
  Metadata:
    
    encoder         : Lavf56.25.101
    
  Duration: 00:00:02.95, start: 0.069063, bitrate: 24 kb/s
    
    Stream #200:0: Audio: mp3, 16000 Hz, mono, s16p, 24 kb/s
    
[amix @ 0x3cffb20] Value 201.000000 for parameter 'inputs' out of range [1 - 32]
    
    Last message repeated 1 times
    
[amix @ 0x3cffb20] Error setting option inputs to value 201.
    
[Parsed_amix_201 @ 0x3cffa60] Error applying options to the filter.
    
[AVFilterGraph @ 0x3b44980] Error initializing filter 'amix' with args '201:duration=first'
    
Error configuring filters.

    Cygwin :

      Stream #199:0 (mp3) -> adelay
    
  Stream #200:0 (mp3) -> adelay
    
  amix -> Stream #0:0 (aac)
    
Press [q] to stop, [?] for help
    
[Parsed_adelay_171 @ 00000000041fc0c0] Failed to configure input pad on Parsed_adelay_171
    
Error reinitializing filters!
    
Failed to inject frame into filter network: Cannot allocate memory
    
Error while processing the decoded data for stream #200:0
    
Conversion failed!

    Windows :

    The command line is too long.

    What’s your solution ?

  • How to record audio with ffmpeg on linux ?

    2 décembre 2020, par Conor Patrick

    I'd like to record audio from my microphone. My OS is ubuntu. I've tried the following and got errors

    



    $ ffmpeg -f alsa -ac 2 -i hw:1,0 -itsoffset 00:00:00.5 -f video4linux2 -s 320x240 -r 25 /dev/video0 out.mpg

ffmpeg version 0.8.8-4:0.8.8-0ubuntu0.12.04.1, Copyright (c) 2000-2013 the Libav
developers
  built on Oct 22 2013 12:31:55 with gcc 4.6.3
*** THIS PROGRAM IS DEPRECATED ***
This program is only provided for compatibility and will be removed in a future release.
Please use avconv instead.
ALSA lib conf.c:3314:(snd_config_hooks_call) Cannot open shared library
libasound_module_conf_pulse.so
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM hw:1,0
[alsa @ 0xbda7a0] cannot open audio device hw:1,0 (No such file or directory)
hw:1,0: Input/output error


    



    Then I tried

    



    $ ffmpeg -f oss -i /dev/dsp audio.mp3

ffmpeg version 0.8.8-4:0.8.8-0ubuntu0.12.04.1, Copyright (c) 2000-2013 the Libav
developers
built on Oct 22 2013 12:31:55 with gcc 4.6.3
*** THIS PROGRAM IS DEPRECATED ***
This program is only provided for compatibility and will be removed in a future release.
Please use avconv instead.
[oss @ 0x1ba57a0] /dev/dsp: No such file or directory
/dev/dsp: Input/output error


    



    I haven't been able to get ffmpeg to find my microphone. How can I tell ffmpeg to record from my microphone ?
    
It seems the 'Deprecated' message can be ignored because of this topic

    


  • How to record audio with ffmpeg on linux ?

    7 décembre 2014, par Conor Patrick

    I’d like to record audio from my microphone. My OS is ubuntu. I’ve tried the following and got errors

    $ ffmpeg -f alsa -ac 2 -i hw:1,0 -itsoffset 00:00:00.5 -f video4linux2 -s 320x240 -r 25 /dev/video0 out.mpg
    

    
ffmpeg version 0.8.8-4:0.8.8-0ubuntu0.12.04.1, Copyright (c) 2000-2013 the Libav
    
developers
    
  built on Oct 22 2013 12:31:55 with gcc 4.6.3
    
*** THIS PROGRAM IS DEPRECATED ***
    
This program is only provided for compatibility and will be removed in a future release.
    
Please use avconv instead.
    
ALSA lib conf.c:3314:(snd_config_hooks_call) Cannot open shared library
    
libasound_module_conf_pulse.so
    
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM hw:1,0
    
[alsa @ 0xbda7a0] cannot open audio device hw:1,0 (No such file or directory)
    
hw:1,0: Input/output error

    Then I tried

    $ ffmpeg -f oss -i /dev/dsp audio.mp3
    

    
ffmpeg version 0.8.8-4:0.8.8-0ubuntu0.12.04.1, Copyright (c) 2000-2013 the Libav
    
developers
    
built on Oct 22 2013 12:31:55 with gcc 4.6.3
    
*** THIS PROGRAM IS DEPRECATED ***
    
This program is only provided for compatibility and will be removed in a future release.
    
Please use avconv instead.
    
[oss @ 0x1ba57a0] /dev/dsp: No such file or directory
    
/dev/dsp: Input/output error

    I haven’t been able to get ffmpeg to find my microphone. How can I tell ffmpeg to record from my microphone ?
    It seems the ’Deprecated’ message can be ignored because of this topic

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