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Autres articles (54)

  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

  • 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 (...)

  • Support audio et vidéo HTML5

    10 avril 2011

    MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
    Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
    Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
    Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)

Sur d’autres sites (6427)

  • How can i encode a video using a QP map in x264 ? [closed]

    5 septembre 2022, par JustABeginner

    I have a qp table contains x and y coordinates, poc and QP value of each block.

    


    How can I change x264 source code so that I could encode a video with this table ?

    


    I tried using qpfile but its for each frame, not each blocks.

    


    Hope someone could help me.

    


    Here's the table I mentioned :

    



  • Upscale the key frames while decoding in H.264

    25 janvier 2023, par Monaco

    I would like to just upscale the keyframes in an H.264 video. I've been trying to see where can I hold the key frame, in the C src code, in order to scale it. I'm confused whether to apply the scaling in the parsing packet part, or in the decoding part.

    


    I also don't know if upscaling the B & P frames would be enough to not damage the video frames.

    


    I hope you guide me as there are no sufficient documentation about FFmpeg. If you have any suggestions please let me know.

    


  • Flash player seek not working when ffmpeg encoded with gop(-g) = 1 [migrated]

    3 mars 2015, par Brian

    I am trying to deliver video content with frame-by-frame viewing via the SMP Flash player. For encoding, I am using FFMPEG with the x264 video codec for files with .mp4 containers. I am using the latest ffmpeg build and using the OSMF SMP flash video player.

    I am taking a series of png files and creating a .mp4 file :

    ffmpeg -nostdin -loglevel warning  -i out.%d.png -g 1 -crf 15 -c:v libx264 -movflags faststart -pix_fmt yuv420p -r 24 out.mp4

    By encoding with the gop(-g) flag = 1, I am encoding to make each frame a keyframe. When I seek using the scrub bar of the SMP flash player, it always seeks to the start of the video. If I play and scrub/seek the video using the default HTML player, it works perfectly.

    When I encode with the gop(-g) flag = 2, the SMP Flash player scrubs/seeks and plays correctly.

    It looks like there may be some kind of bug or incompatibility with the Flash player. I have found this problem mentioned back in 2009. I think my only hope is to find a work around. Any suggestions ?

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