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Autres articles (102)

  • 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 (...)

  • Librairies et binaires spécifiques au traitement vidéo et sonore

    31 janvier 2010, par

    Les logiciels et librairies suivantes sont utilisées par SPIPmotion d’une manière ou d’une autre.
    Binaires obligatoires FFMpeg : encodeur principal, permet de transcoder presque tous les types de fichiers vidéo et sonores dans les formats lisibles sur Internet. CF ce tutoriel pour son installation ; Oggz-tools : outils d’inspection de fichiers ogg ; Mediainfo : récupération d’informations depuis la plupart des formats vidéos et sonores ;
    Binaires complémentaires et facultatifs flvtool2 : (...)

  • Contribute to translation

    13 avril 2011

    You can help us to improve the language used in the software interface to make MediaSPIP more accessible and user-friendly. You can also translate the interface into any language that allows it to spread to new linguistic communities.
    To do this, we use the translation interface of SPIP where the all the language modules of MediaSPIP are available. Just subscribe to the mailing list and request further informantion on translation.
    MediaSPIP is currently available in French and English (...)

Sur d’autres sites (6681)

  • cbs_av1 : Fill tile width/height values when uniform_tile_spacing_flag is set

    31 août 2020, par Mark Thompson
    cbs_av1 : Fill tile width/height values when uniform_tile_spacing_flag is set

    They are not explicitly in the bitstream in this case, but it is helpful
    
to be able to use these values without always needing to check the flag
    
beforehand.
    • [DH] libavcodec/cbs_av1_syntax_template.c

  • FFMPEG - Crop image so that height and width of image are equal

    2 septembre 2020, par Sarmad S.

    Using ffmpeg, I want to be able to crop an image so that the dimensions become equal. For example if I have an input image that is 1600x1000, after cropping it should be 1000x1000 (because 1000 is the smallest amongst the two dimensions). When cropping the image, it should crop equally from both sides.

    


    Some examples :
Input image : 1600x1000 -> crop 300px from the left and 300px from the right side. Final image 1000x1000.

    


    Input image : 1100x1500 -> crop 200px from the top and 300px from the bottom. Final image 1100x1100.

    


    I can use this the command below to crop left and right or bottom and top or both. But the problem is that I want to crop only the largest dimension. Is there any way to know the largest dimension ?

    


    crop=in_w-in_h/2:in_h-in_w/2


    


  • HEVC : Fetching the input width and height from input bin stream

    1er juillet 2022, par Zax

    I have created an elementary bin stream using HM-12.0 reference code. So the out put is an HEVC encoded bin stream (say input.bin).

    



    I have a task which involves reading the header of this elementary stream. That is i need to fetch information such a the stream width, height etc. from the input.bin file.

    



    After seeing a lots of streams, i can conclude that all these bin streams starts from the sequence :

    



    00 00 00 01


    



    So whenever i see this sequence in any bin stream, i can say that this stream has to be decoded by HEVC decoder.

    



    Further if i want to fetch the width, height, fps etc. from the input.bin (like ff_raw_video_read_header function in ffmpeg), that are the steps need to be performed to fetch this information ?

    



    I have gone through the parsing section of the HEVC draft, but its very complicated for my level in video domain. Can anyone suggest a simple way to fetch the required information from the encoded bin file ?

    



    Any suggestions will be really helpful to me. Thanks in advance.

    


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