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  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

  • Personnaliser en ajoutant son logo, sa bannière ou son image de fond

    5 septembre 2013, par

    Certains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;

  • Gestion des droits de création et d’édition des objets

    8 février 2011, par

    Par défaut, beaucoup de fonctionnalités sont limitées aux administrateurs mais restent configurables indépendamment pour modifier leur statut minimal d’utilisation notamment : la rédaction de contenus sur le site modifiables dans la gestion des templates de formulaires ; l’ajout de notes aux articles ; l’ajout de légendes et d’annotations sur les images ;

Sur d’autres sites (8014)

  • How to estimate bandwidth / speed requirements for real-time streaming video ?

    19 juin 2016, par Vivek Seth

    For a project I’m working on, I’m trying to stream video to an iPhone through its headphone jack. My estimated bitrate is about 200kbps (If i’m wrong about this, please ignore that).

    I’d like to squeeze as much performance out of this bitrate as possible and sound is not important for me, only video. My understanding is that to stream a a real-time video I will need to encode it with some codec on-the-fly and send compressed frames to the iPhone for it to decode and render. Based on my research, it seems that H.265 is one of the most space efficient codecs available so i’m considering using that.

    Assuming my basic understanding of live streaming is correct, how would I estimate the FPS I could achieve for a given resolution using the H.265 codec ?

    The best solution I can think of it to take a video file, encode it with H.265 and trim it to 1 minute of length to see how large the file is. The issue I see with this approach is that I think my calculations would include some overhead from the video container format (AVI, MKV, etc) and from the audio channels that I don’t care about.

  • lavc/h264idct : fix RISC-V group multiplier

    16 novembre 2024, par Rémi Denis-Courmont
    lavc/h264idct : fix RISC-V group multiplier

    After the branch, the expected SEW/LMUL ratio is 1 byte/vector.
    
So we have to set the same ratio before branching (QEMU does not care,
    
but real hardware does).
    • [DH] libavcodec/riscv/h264idct_rvv.S

  • lavc/h264dsp : fix R-V V weight_pixels pointer arithmetic

    17 novembre 2024, par Rémi Denis-Courmont
    lavc/h264dsp : fix R-V V weight_pixels pointer arithmetic

    As of 459a1512f13ae1fdd404ff9281b02d225ac70a09,
    
the code is unrolled to process two rows per iteration.
    
The output cursor thus needs to be incremented by twice the
    
stride, which is taken care of with SH1ADD. However the original
    
ADD from the original implemetation was incorrectly left over.
    • [DH] libavcodec/riscv/h264dsp_rvv.S

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