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  • De l’upload à la vidéo finale [version standalone]

    31 janvier 2010, par

    Le chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
    Upload et récupération d’informations de la vidéo source
    Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
    Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)

  • List of compatible distributions

    26 avril 2011, par

    The table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
    If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)

  • 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 : (...)

Sur d’autres sites (11984)

  • Broadcasting video from the camera to YouTube

    17 octobre 2022, par vernise

    I want to stream video on YouTube. But there are a lot of restrictions. Firstly, I want to do it via an intermediate server. If there is no connection, the broadcast will not complete. Instead, an error will be displayed on the broadcast. This is due to the fact that the camera is close to the battle line. A blackout is not an uncommon occurrence. Also due to the limitations of YouTube (maximum 12 hours of broadcasting time to save), the broadcast has to start twice a day. I tried to implement transmission via FFmpeg and UDP to an intermediary server (I'm using a simple webcam), but the latency at this stage is more than 30 seconds. Any suggestions would be appreciated.

    


  • Why does Youtube player stretch MPEG1/2 video not H.264 ?

    25 juin 2017, par Maru

    I want to upload the video on Youtube and I have this particular MKV file.

    and I used ffmpeg to convert it to MP4 and hard code the ass subtitle into it.

    Now my question is

    When I simply tried converting the video without a sub and uploaded on Youtube,
    so it retained its original vcodec.

    ffmpeg -i "input.mkv" -c:v copy -c:a aac "output.mp4"

    The video (vcodec MPEG-1/2) is played with 16:9 ratio.

    However, when I put a sub on it, so the video need to be re-encoded.
    (In this case, I chose to preserve the quality by making it lossless.)

    ffmpeg -i "input.mkv" -preset veryslow -crf 0 -c:a aac -vf "ass=sub.ass" "output.mp4"

    Now the subbed video has vcodec of H.264.

    However, Youtube player keep its original aspect of 720x480 and there is a black bar on the side of the video.

    Therefore, I am curious why is it such a case ? even though VLC told me that both has the same resolution of 720x480.

    Furthermore, is there anyway I can adjust the aspect ratio on Youtube ?

    I know that I can simply scale the video with ffmpeg,

    but I was wondering if there is anyway I can tell Youtube to play the aspect ration that I want ? I think the formatting tags no longer works....

  • Extract frames from live youtube stream

    21 décembre 2022, par irman

    I want to extract frames from a youtube live event, say one frame every 5 minutes, ideally without saving the stream to my local machine. Is there a simple way to do this, possibly a combination between youtube-dl and ffmpeg that I am not figuring out ? I found a similar question for UDP streams but don't know how to include the youtube stream : FFMPEG : extract a fram from a live stream once every 5 seconds

    



    Thanks a lot in advance !

    


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