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  • 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

  • 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 (...)

  • 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 (...)

Sur d’autres sites (4214)

  • How can I stream an image to YouTube using FFmpeg ?

    3 mai 2021, par Vladimir Putin

    I have an image that changes every few seconds. How can I stream it to YouTube using FFmpeg ?

    


  • audio discontinuity in ffmpeg joined youtube video

    1er novembre 2016, par MrPeach

    I downloaded 4 parts of a video of youtube, and I wanted to join them.

    My first (conservative) attempt :

    echo file 'Part 1.mp4' > m
    
echo file 'Part 2.mp4' >> m
    
echo file 'Part 3.mp4' >> m
    
echo file 'Part 4.mp4' >> m
    
ffmpeg -f concat -i m -c copy 1a.mp4

    Result : A/V sync good, at transition video garbled, audio discontinuity

    Second (extreme) attempt :

    echo file '1.avi' > m
    
echo file '2.avi' >> m
    
echo file '3.avi' >> m
    
echo file '4.avi' >> m
    

    
ffmpeg -y -i "Part 1.mp4" -f avi -acodec pcm_s16le -ac 2 -ar 44100 -vcodec rawvideo -pix_fmt yuv420p 1.avi
    
ffmpeg -y -i "Part 2.mp4" -f avi -acodec pcm_s16le -ac 2 -ar 44100 -vcodec rawvideo -pix_fmt yuv420p 2.avi
    
ffmpeg -y -i "Part 3.mp4" -f avi -acodec pcm_s16le -ac 2 -ar 44100 -vcodec rawvideo -pix_fmt yuv420p 3.avi
    
ffmpeg -y -i "Part 4.mp4" -f avi -acodec pcm_s16le -ac 2 -ar 44100 -vcodec rawvideo -pix_fmt yuv420p 4.avi
    

    
ffmpeg -f concat -i m -c:a libvo_aacenc -c:v h264 1b.mp4

    Result : A/V sync issues in first section, at transition slight jump in video, audio discontinuity

    I have no idea how to fix this. Thoughts ?

    Update :

    Both the audio and video exhibit issues - skipping and duplication of a short section at some joins.

    My ultimate solution was to check the a&v section joins for duplication and trim that off if it exists, and for the audio cut out any silence sections as best as the waveform allowed. Lastly, modify the audio tempo to match the length of the video.

    It’s a terrible hack, but it’s what I’m stuck with. If anyone ever comes up with a better approach, I’d love to hear of it.

  • How to convert orginal video into multiple quality like youtube by using ffmpeg ? [closed]

    21 avril 2021, par rahulchanchardbabaji

    I am creating a streaming app like youtube while I am creating it I am facing many challenges related to different quality video converting.

    


      


    1. Should I convert orginal video file into multiple video file (like 240p, 480p and 720p) and storage them ? Or there is anyway where I can create a single video file can the same.

      


      2. 


    2. Which video format should I use MP4, HLS or DASH for fast streaming, support for every devices, take minimum space and support subtitles.

      


      3. 


    


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