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Autres articles (98)

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • Modifier la date de publication

    21 juin 2013, par

    Comment changer la date de publication d’un média ?
    Il faut au préalable rajouter un champ "Date de publication" dans le masque de formulaire adéquat :
    Administrer > Configuration des masques de formulaires > Sélectionner "Un média"
    Dans la rubrique "Champs à ajouter, cocher "Date de publication "
    Cliquer en bas de la page sur Enregistrer

  • Gestion générale des documents

    13 mai 2011, par

    MédiaSPIP ne modifie jamais le document original mis en ligne.
    Pour chaque document mis en ligne il effectue deux opérations successives : la création d’une version supplémentaire qui peut être facilement consultée en ligne tout en laissant l’original téléchargeable dans le cas où le document original ne peut être lu dans un navigateur Internet ; la récupération des métadonnées du document original pour illustrer textuellement le fichier ;
    Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP (...)

Sur d’autres sites (3281)

  • Remove timstamp info from Mp4 file

    23 septembre 2021, par dinesh47

    looking to remove Timestamp info from mp4 file container.
The question is .Is it possible to remove such metadata from a mp4 file
if we can can we do it by FFmpeg lib

    


    if i take a track dump the following info is viewed

    


    


    mp4file OutPut.mp4, track 1, samples 610, timescale 14848

    


    


    


    sampleId 1, size 112773 duration 512 time 0 00:00:00.000 S
sampleId 2, size 131890 duration 512 time 512 00:00:00.034
    
sampleId 3, size 114949 duration 512 time 1024 00:00:00.068
    
sampleId 4, size 111121 duration 512 time 1536 00:00:00.103
    
sampleId 5, size 110190 duration 512 time 2048 00:00:00.137
    
sampleId 6, size 110584 duration 512 time 2560 00:00:00.172
    
sampleId 7, size 111044 duration 512 time 3072 00:00:00.206
    
sampleId 8, size 110104 duration 512 time 3584 00:00:00.241
    
sampleId 9, size 107679 duration 512 time 4096 00:00:00.275
    
sampleId 10, size 107347 duration 512 time 4608 00:00:00.310
    
sampleId 11, size 106728 duration 512 time 5120 00:00:00.344
    
sampleId 12, size 107705 duration 512 time 5632 00:00:00.379
    
sampleId 13, size 176560 duration 512 time 6144 00:00:00.413 S
sampleId 14, size 110496 duration 512 time 6656 00:00:00.448
    
sampleId 15, size 109697 duration 512 time 7168 00:00:00.482

    


    


    what i am trying to do is hide the duration info when taking dump.

    


  • How to remove timestamp info from Mp4 file ?

    21 septembre 2022, par dinesh47

    I am looking to remove Timestamp info from mp4 file container.
Is it possible to remove such metadata from a mp4 file
if we can can we do it by FFmpeg lib ?

    


    Here is an example track dump :

    


    


    mp4file OutPut.mp4, track 1, samples 610, timescale 14848

    


    


    


    sampleId 1, size 112773 duration 512 time 0 00:00:00.000 S
sampleId 2, size 131890 duration 512 time 512 00:00:00.034
    
sampleId 3, size 114949 duration 512 time 1024 00:00:00.068
    
sampleId 4, size 111121 duration 512 time 1536 00:00:00.103
    
sampleId 5, size 110190 duration 512 time 2048 00:00:00.137
    
sampleId 6, size 110584 duration 512 time 2560 00:00:00.172
    
sampleId 7, size 111044 duration 512 time 3072 00:00:00.206
    
sampleId 8, size 110104 duration 512 time 3584 00:00:00.241
    
sampleId 9, size 107679 duration 512 time 4096 00:00:00.275
    
sampleId 10, size 107347 duration 512 time 4608 00:00:00.310
    
sampleId 11, size 106728 duration 512 time 5120 00:00:00.344
    
sampleId 12, size 107705 duration 512 time 5632 00:00:00.379
    
sampleId 13, size 176560 duration 512 time 6144 00:00:00.413 S
sampleId 14, size 110496 duration 512 time 6656 00:00:00.448
    
sampleId 15, size 109697 duration 512 time 7168 00:00:00.482

    


    


    Is it possible to hide the duration info in this track dump ?

    


  • avdevice/dshow : select format with extended color info

    21 décembre 2021, par Diederick Niehorster
    avdevice/dshow : select format with extended color info

    Some DirectShow devices (Logitech C920 webcam) expose each DirectShow
    
format they support twice, once without and once with extended color
    
information. During format selection, both match, this patch ensures
    
that the format with extended color information is selected if it is
    
available, else it falls back to a matching format without such
    
information. This also necessitated a new code path taken for default
    
formats of a device (when user didn't request any specific video size,
    
etc), because the default format may be one without extended color
    
information when a twin with extended color information is also
    
available. Getting the extended color information when available is
    
important as it allows setting the color space, range, primaries,
    
transfer characteristics and chroma location of the stream provided by
    
dshow, enabling users to get more correct color automatically out of
    
their device.
    

    Closes : #9271
    

    Signed-off-by : Diederick Niehorster <dcnieho@gmail.com>
    
Reviewed-by : Roger Pack <rogerdpack2@gmail.com>
    • [DH] libavdevice/dshow.c

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