Recherche avancée

Médias (0)

Mot : - Tags -/xmlrpc

Aucun média correspondant à vos critères n’est disponible sur le site.

Autres articles (64)

  • Les formats acceptés

    28 janvier 2010, par

    Les commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
    ffmpeg -codecs ffmpeg -formats
    Les format videos acceptés en entrée
    Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
    Les formats vidéos de sortie possibles
    Dans un premier temps on (...)

  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
    Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir

  • Automated installation script of MediaSPIP

    25 avril 2011, par

    To overcome the difficulties mainly due to the installation of server side software dependencies, an "all-in-one" installation script written in bash was created to facilitate this step on a server with a compatible Linux distribution.
    You must have access to your server via SSH and a root account to use it, which will install the dependencies. Contact your provider if you do not have that.
    The documentation of the use of this installation script is available here.
    The code of this (...)

Sur d’autres sites (10062)

  • FFMPEG - speed up/slow down video, add jitter etc

    27 septembre 2019, par Darrell

    I’m trying to put together a Windows script that will process short videos in a folder.
    The videos will be shot at a high frame rate 60+ fps and be about 4-5 secs long.

    Basically I am looking to make various style clips, using fast/slow effects, back and forth etc.
    So, the script might process a video, make it start normal speed, then slow motion. Next video might be normal speed, slomo, normal speed slomo. Next video might be forwards,back, forwards back, slomo.

    See example : (this is a compliation, I’m looking at processing individual videos in a folder.)

    http://www.youtube.com/watch?v=K03IBQZu8SQ

    I’m guessing there is no way to do this, other than splitting a clip using FFMPEG, processing the bits, then merging back together ? I can’t seem to find a way to do it as one clip.

  • Extract specific frames of youtube video without downloading video

    22 janvier 2023, par Kashish Arora

    I need to extract specific frames of an online video to work on an algorithm but I don't want to download the whole video because that would make it highly inefficient.

    


    For starters, I tried working with youtube videos. I can download whole of the video using youtube-dl in this way :

    


    ydl_opts = {'outtmpl': r'OUTPUT_DIRECTORY_HERE',}
with youtube_dl.YoutubeDL(ydl_opts) as ydl:
    ydl.download([url])


    


    And then I can capture individual frames.

    


    I need to avoid downloading the whole video. After some research, I have found that ffmpeg might help me do this. I found no way to download just the frames so if this is not possible, the second option is that I can download specific portions of the video. One such example in linux is here but I couldn't find any solution for python.

    


    What is a good way to download just the frames, or portions of videos (in python) without downloading the entire thing ?

    


  • rtmpproto : Validate the embedded flv packet size before copying

    3 octobre 2013, par Martin Storsjö
    rtmpproto : Validate the embedded flv packet size before copying

    This wasn’t an issue prior to 58404738, when the whole RTMP packet
    
was copied at once and the length of the individual embedded flv
    
packets only were validated by the flv demuxer.
    

    Prior to this patch, this could lead to reads and writes out of bound.
    

    Signed-off-by : Martin Storsjö <martin@martin.st>
    • [DBH] libavformat/rtmpproto.c

Navigation