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Autres articles (62)

  • Mise à jour de la version 0.1 vers 0.2

    24 juin 2013, par

    Explications des différents changements notables lors du passage de la version 0.1 de MediaSPIP à la version 0.3. Quelles sont les nouveautés
    Au niveau des dépendances logicielles Utilisation des dernières versions de FFMpeg (>= v1.2.1) ; Installation des dépendances pour Smush ; Installation de MediaInfo et FFprobe pour la récupération des métadonnées ; On n’utilise plus ffmpeg2theora ; On n’installe plus flvtool2 au profit de flvtool++ ; On n’installe plus ffmpeg-php qui n’est plus maintenu au (...)

  • 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 ;

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

Sur d’autres sites (11213)

  • ffmpeg on the fly switch video from rtsp stream

    31 juillet 2021, par John Williamson

    I have a nest doorbell which provides a video stream via rtsp but for security the url is valid for just 4 minutes at which point a new url is provided i.e.

    


    15:25 - rtsps://stream-eu1-delta.dropcam.com:443/sdm_live_stream/CiQA2.....
15:29 - rtsps://stream-eu1-delta.dropcam.com:443/sdm_live_stream/vY8pB.....


    


    I'm able to play the individual streams to a rtsp-simple-server using

    


    ffmpeg -nostdin  -i  rtsps://stream-eu1-delta.dropcam.com:443/sdm_live_stream/CiQA2.... -q:v 1 -f rtsp rtsp://localhost:8554/live


    


    But is there any way to switch to the latest url on the fly ? I've looked at ffmpeg concate but this requires files. I don't really care about freezing or black between the switching, only that the output stream should remain open.

    


    ffmpeg version 4.2.4-1ubuntu0.1 running on Ubuntu 20.04.2 LTS

    


  • 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

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