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  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Multilang : améliorer l’interface pour les blocs multilingues

    18 février 2011, par

    Multilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
    Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela.

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

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  • Incorrect values for song length (duration) in Mp3tag after ffmpeg FLAC to MP3 conversion

    29 mars 2024, par Clueless

    The problem

    


    As per this post, I use the following command to convert a flac file to mp3 while keeping all metadata :

    


    ffmpeg -i input.flac -ab 320k -map_metadata 0 -id3v2_version 3 output.mp3


    


    When inspecting the converted mp3 file by right-clicking it, going to properties and then details, everything looks in order. The value for "Length" is correct.

    


    enter image description here

    


    When inspecting the converted mp3 file with Mp3tag, the value for "Length" is different. From my testing, the "Length" value is consistently about 28% of what it is supposed to be.

    


    enter image description here

    


    Normally, this isn't an issue. Most music players I use, read the correct length value, same as Windows. However, I've recently discovered that Spotify Mobile for some reason ignores the length value that can be seen in the Windows panel and uses the one that can be seen in Mp3tag.

    


    I want to figure out what command I should use so that after the flac file has been converted to mp3, Mp3tag shows the correct length, and there by, Spotify Mobile reads the correct length as well.

    


    What I have tried

    


    1.
After converting the file to Mp3, I've tried reencoding the mp3 file into a... mp3 file using the following command :

    


    ffmpeg -i original.mp3 -c:v copy -c:a mp3 -vn -ar 44100 -ac 2 -b:a 320k copy.mp3


    


    enter image description here

    


    As can be seen in the image above, this fixes the issue and the length is showing correctly in Mp3tag and in Spotify Mobile.

    


    Issues with this : Reencoding reduces quality and I don't know how to combine the previous flac conversion command and this one into one line.

    


    2.
I tried https://cloudconvert.com/flac-to-mp3 and it worked. The length is displayed correctly in Mp3tag. (What commands did they use on the server ???)

    


    enter image description here

    


    Issues with this : I don't want to rely on a cloud service for conversion, I have a lot of files to convert and I'd prefer it to be done locally.

    


    Some demo files

    


    Here is a folder with a flac file, a bad mp3 file (wrong length) and a good mp3 file. It looks like if you preview the music in google drive, it also plays the wrong length for the bad mp3 (39s not 2m19s), while vlc, groove player, spotify (desktop not mobile) all play the correct full length (2m19s) for the bad mp3 file.

    


    Folder : here's the link

    


  • vf_psnr : always calculate MSE over full pixel range.

    11 juillet 2015, par Ronald S. Bultje
    vf_psnr : always calculate MSE over full pixel range.

    This makes the output compatible with that of pretty much any other
    
tool that calculates PSNR.
    

    Reviewed-by : Paul B Mahol <onemda@gmail.com>
    
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] libavfilter/vf_psnr.c

  • avfilter/vf_fftfilt : increase RDFT length by 10%

    10 mars 2015, par Michael Niedermayer
    avfilter/vf_fftfilt : increase RDFT length by 10%

    This fixes artifacts when the dimensions are exact powers of 2
    

    Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
    • [DH] libavfilter/vf_fftfilt.c

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