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Autres articles (38)

  • Contribute to documentation

    13 avril 2011

    Documentation is vital to the development of improved technical capabilities.
    MediaSPIP welcomes documentation by users as well as developers - including : critique of existing features and functions articles contributed by developers, administrators, content producers and editors screenshots to illustrate the above translations of existing documentation into other languages
    To contribute, register to the project users’ mailing (...)

  • Selection of projects using MediaSPIP

    2 mai 2011, par

    The examples below are representative elements of MediaSPIP specific uses for specific projects.
    MediaSPIP farm @ Infini
    The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...)

  • 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.

Sur d’autres sites (8271)

  • ffmpeg reverts audio volume even after removing the audio track

    7 avril 2023, par DniweTamp

    I tried making a simple batch file that separates and normalizes audio track, and merges it with the reencoded video track afterwards, but whenever I try to add the edited audio track back the volume just goes back to the original level.

    


    It happens specifically when I try to add the audio back to video, the volume level stays normalized if I reencode said audio to .aac or .ogg files, but when I try to add it to the video, even using -c:a copy, the volume just reverts to the original level

    


    Below is an image that shows the volume levels of audio tracks

    


    I detach audio, normalize it (result is top track), add it back to the video, and it becomes what's on the bottom (which is also the same volume as the original video's audio)
Normalized and quiet volume levels

    


    Here's the contents of my batch file, expected result was a reencoded video, with normalized audio

    


    I tried removing audio track with both -an and -map 0 -map -0:a, same result

    


    I can confirm that the normalize program does its job correctly, by checking volume levels in audacity

    


    ffmpeg -i %1 -y temp.wav
normalize.exe temp.wav
ffmpeg -i %1 -c:v libx264 -map 0 -map -0:a -profile:v main -pix_fmt yuv420p -movflags +faststart -preset medium -crf 22 -map_metadata -1 -y video.temp.mp4
ffmpeg -i %1 -i temp.wav -c:v copy -y video.h264.mp4
del temp.wav
del video.temp.mp4


    


    Edit : and here's the video file I tried this on.

    


  • choosing outbound IP (eth0 or eth1) in FFMPEG

    4 septembre 2018, par Ba Ta

    I have 2 IP addresses on my server.

    $curl --interface eth0 ifconfig.co      
    
111.111.111.111
    

    
 $curl --interface eth0:0 ifconfig.co      
    
222.222.222.222

    So via curl I can switch via interfaces so my IP address changes when I visit any url based on eth IP

    How can I use same thing via ffmpeg ?

    For example, if want to access this video via ffmpeg (it uses 111.111.111.111 to access it)

     ffmpeg -i 123.com/video.mp4

    how can I access same video from my second IP 222.222.222.222 ?

    Is there any command like this, perhaps ?

    ffmpeg --interface eth0:0  -i 123.com/video.mp4

  • Documentation #2739 : Doc des API édition d’objet et job_queue

    30 mai 2012, par cedric -

    c’est loin d’être si évident. IL y a bien une question de répartition des docs, mais dire que tout doit être sur programmer est un réponse parmi d’autres.

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