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Autres articles (61)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

  • Problèmes fréquents

    10 mars 2010, par

    PHP et safe_mode activé
    Une des principales sources de problèmes relève de la configuration de PHP et notamment de l’activation du safe_mode
    La solution consiterait à soit désactiver le safe_mode soit placer le script dans un répertoire accessible par apache pour le site

Sur d’autres sites (7138)

  • use ffmpeg to extract video frames with time code specified on the SRT file

    4 avril 2020, par Allen

    Complete newbie on ffmpeg here. I have a video file and an SRT subtitle file. Is there any way I can have ffmpeg read the time code on the SRT and use that as an input parameter for ffmepg to specify exactly when to extract video frames ?

    



    If this is too complex for ffmpeg, are there other approaches you can recommend to achieve what I am trying to do ?

    



    Thank you guys in advance for your input.

    



    Allen

    


  • Can anyone guide me how to use FFMPEG to decode H264 Video by swift in IOS ? [closed]

    28 octobre 2019, par nguyen_hung _mrroot

    Can anyone guide me how to use FFMPEG to decode H264 Video by Swift in IOS ?
    Thanks in advance.

  • Metal Gear Solid VP3 Easter Egg

    4 août 2011, par Multimedia Mike — Game Hacking

    Metal Gear Solid : The Twin Snakes for the Nintendo GameCube is very heavy on the cutscenes. Most of them are animated in real-time but there are a bunch of clips — normally of a more photo-realistic nature — that the developers needed to compress using a conventional video codec. What did they decide to use for this task ? On2 VP3 (forerunner of Theora) in a custom transport format. This is only the second game I have seen in the wild that uses pure On2 VP3 (first was a horse game). Reimar and I sorted out most of the details sometime ago. I sat down today and wrote a FFmpeg / Libav demuxer for the format, mostly to prove to myself that I still could.

    Things went pretty smoothly. We suspected that there was an integer field that indicated the frame rate, but 18 fps is a bit strange. I kept fixating on a header field that read 0x41F00000. Where have I seen that number before ? Oh, of course — it’s the number 30.0 expressed as an IEEE 32-bit float. The 4XM format pulled the same trick.

    Hexadecimal Easter Egg
    I know I finished the game years ago but I really can’t recall any of the clips present in the samples directory. The file mgs1-60.vp3 contains a computer screen granting the player access and illustrates this with a hexdump. It looks something like this :



    Funny, there are only 22 bytes on a line when there should be 32 according to the offsets. But, leave it to me to try to figure out what the file type is, regardless. I squinted and copied the first 22 bytes into a file :

     1F 8B 08 00   85 E2 17 38   00 03 EC 3A   0D 78 54 D5
 38 00 03 EC   3A 0D

    And the answer to the big question :

    $ file mgsfile
mgsfile : gzip compressed data, from Unix, last modified : Wed Oct 27 22:43:33 1999

    A gzip’d file from 1999. I don’t know why I find this stuff so interesting, but I do. I guess it’s no more and less strange than writing playback systems like this.

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