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  • Personnaliser les catégories

    21 juin 2013, par

    Formulaire de création d’une catégorie
    Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
    Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
    On peut modifier ce formulaire dans la partie :
    Administration > Configuration des masques de formulaire.
    Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
    Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...)

  • 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 (...)

  • De l’upload à la vidéo finale [version standalone]

    31 janvier 2010, par

    Le chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
    Upload et récupération d’informations de la vidéo source
    Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
    Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)

Sur d’autres sites (10079)

  • lavu : fix memory leaks by using a mutex instead of atomics

    14 novembre 2014, par wm4
    lavu : fix memory leaks by using a mutex instead of atomics

    The buffer pool has to atomically add and remove entries from the linked
    
list of available buffers. This was done by removing the entire list
    
with a CAS operation, working on it, and then setting it back again
    
(using a retry-loop in case another thread was doing the same thing).
    

    This could effectively cause memory leaks : while a thread was working on
    
the buffer list, other threads would allocate new buffers, increasing
    
the pool’s total size. There was no real leak, but since these extra
    
buffers were not needed, but not free’d either (except when the buffer
    
pool was destroyed), this had the same effects as a real leak. For some
    
reason, growth was exponential, and could easily kill the process due
    
to OOM in real-world uses.
    

    Fix this by using a mutex to protect the list operations. The fancy
    
way atomics remove the whole list to work on it is not needed anymore,
    
which also avoids the situation which was causing the leak.
    

    Signed-off-by : Anton Khirnov <anton@khirnov.net>
    • [DH] libavutil/buffer.c
    • [DH] libavutil/buffer_internal.h

  • How to recover video from H264 frames and timestamps [closed]

    10 juin 2024, par kokosda

    My service receives H264 frames and some metadata related to them like Timestamp from MS Teams.

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    Observations :

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    • Those frames are inter-frame compressed.

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    • Resolution of those frames can change.

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    • Timestamps are like this one 39264692280552704. That represents year 125 if fed to .NET consturctor new DateTime(39264692280552704), so I need to add 1899 years to get a real date.

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    • I can wrap the sequence to a playable mp4 container with ffmpeg -i input.h264 -c copy output.mp4, however it is not what I want because the resulting video plays too fast, like on fast forward. Thus, I would like those timestamps would be considered to recover a real timeline.

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    I merged all the H264 frames in one file like input.h264 and saved all the timestamps in another file like metadata.json. In metadata.json, each object describes a single frame from input.h264.

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    My question is how to recover the source video from frames and timestamps that I received from Teams ? Particularly, using FFMPEG.

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  • Stream to / from FLV

    18 août 2015, par MKN Web Solutions

    Is it possible to stream to an FLV (via exec ffmpeg) and have a client from from that FLV for real time stream (http).

    I’m not sure if this is something of RTMPT, but I’ve seen sites that use FLV to stream. I currently already use HLS and DASH, I’m just trying to experiment with other channels.

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