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  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • Gestion de la ferme

    2 mars 2010, par

    La ferme est gérée dans son ensemble par des "super admins".
    Certains réglages peuvent être fais afin de réguler les besoins des différents canaux.
    Dans un premier temps il utilise le plugin "Gestion de mutualisation"

  • ANNEXE : Les plugins utilisés spécifiquement pour la ferme

    5 mars 2010, par

    Le site central/maître de la ferme a besoin d’utiliser plusieurs plugins supplémentaires vis à vis des canaux pour son bon fonctionnement. le plugin Gestion de la mutualisation ; le plugin inscription3 pour gérer les inscriptions et les demandes de création d’instance de mutualisation dès l’inscription des utilisateurs ; le plugin verifier qui fournit une API de vérification des champs (utilisé par inscription3) ; le plugin champs extras v2 nécessité par inscription3 (...)

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  • Record and stream desktop to Youtube by ffmpeg with HD resolution

    1er juillet 2021, par Do Ngoc Tuan

    I want to record and stream desktop to Youtube live by FFmpeg. But the output resolution is very low, maximum 360.
What options I need to change ?

    



    ffmpeg  -framerate 30 -f x11grab -i :1 -f pulse -i default -c:v libx264 -s 1920x1080 -r 60 -b:v 5000k  -crf 10 -vf format=yuv420p -c:a aac -b:a 128k -f flv rtmp://a.rtmp.youtube.com/live2/stream_key


    


  • Crackling noise and other audio defects when live streaming (only) on YouTube

    7 août 2020, par almosnow

    I am using ffmpeg to transcode and stream a live video, using rtmp. Everything works fine BUT the audio that comes out on the YouTube end has cracks and pops, like what you would expect to hear when your sound card's buffer is saturated.

    


    What's weird is that I am sending the exact same information to different services, and only YouTube seems to have a problem with it. For this I am using ffmpeg's tee, like this :

    


    ffmpeg -i - -deinterlace -map 0 -flags +global_header 
       -f tee "[f=flv:onfail=ignore]rtmp://twitch/key|[f=flv:onfail=ignore]rtmp://youtube/key|out.flv"'


    


    So, the twitch end sounds great, the output file that I'm rendering also sounds good. Only on YouTube it sounds really bad.

    


    I thought it may be the audio codec, the audio settings I'm using are -c:a aac -b:a 128k -ar 44100 ; but I've tried different things (using an mp3 codec, different bitrates) and it always sounds like that. Also AAC seems to be supported according to their own (YT) guidelines.

    


    What could it be ?

    


  • FFmpeg - How should I do to convince YouTube that it is receiving "endless" video stream ?

    16 octobre 2017, par K._

    I’m using FFmpeg and Youtube Live Streaming API to live-stream videos to YouTube.

    I made something generates video files continuously,
    and I want to live-stream them to YouTube without any delay.

    To feed them to YouTube’s RTMPT(rtmp ://a.../live2/...) server,
    I tried several things :

    1. Just while:; do ./ffmpeg ... rtmp://...; done.
    2. Piping

    YouTube streamed them continuously, but not seamlessly.
    It showed Buffering icon for about 20 seconds (as if a new YouTube stream gets created and starts to be fed), about 5 seconds before the currently showing video ends and the next video get showed.

    | ...===============(BUFFERING)===== | ...===============(BUFFERING)===== | ...

    It seems that YouTube just stops the stream when it detects the end of a video.
    How should I do to convince YouTube that it is receiving "endless" video stream ?

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