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Médias (91)

Autres articles (51)

  • 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

  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

  • Support audio et vidéo HTML5

    10 avril 2011

    MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
    Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
    Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
    Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)

Sur d’autres sites (4768)

  • How to get the information of bit-rate from YouTube videos ?

    21 février 2017, par Ashutosh Singla

    I was using YouTube videos for my test and I was wondering how can I get the information of bit-rate of the played video ?

    I used 2 methods to know the information about the bit-rate but didn’t get any information.

    1. Right-click on a video and choose "Stats for nerds".
    
2. ffmpeg -i input_video -f ffmetadata metadata.txt

    I don’t know if by doing the right click on the video and then properties, then details would give me the correct way of showing the bit-rate.

    Any suggestions ?

  • concat 2 different image size multiple tracks videos

    12 avril 2020, par Mher Mkrtchyan

    I try concat two videos (1.mkv has 640:360 image size, 2.mkv has 1280:720 image size), both videos have 2 video tracks and 0 audio tracks. I tried this code :

    



    ffmpeg -i 1.mkv -i 2.mkv -filter_complex "[0:v:0]scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:(ow-iw)/2:(oh-ih)/2[v0];[0:v:1]scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:(ow-iw)/2:(oh-ih)/2[v0];[v0][1:v:0][1:v:1]concat=n=2:v=2:a=0[v]" -map "[v]" -c:v "libvpx" 1+2.mkv


    



    But I have wrong :

    



    Filter pad has an unconnected output


    


  • Append two videos without duplicating FFMPEG

    10 septembre 2021, par Hasindu Lanka

    Let's say we have 2 video files (X,Y) in the same format, codec and dimensions.

    


    X is a longer video with several gigabytes in size. Y is a short 10 second video. I want to append Y to the end of X without creating another copy of X (Because it's big in size)

    


    I have to repeat this process for hours with many 10 second videos arriving one after another.

    


    Currently, I'm concatenating files using ffmpeg.

    


    ffmpeg -f concat -safe 0 -i chunk.list -c copy final-video.mkv

    


    chunk.list contains file names of X and several 10 second videos. After this, X will be deleted and replaced by final-video.mkv. Then, repeat.

    


    But this needs twice the storage capacity and I/O operations. How to do this without creating duplicates ?

    


    It's okay to duplicate these 10 second videos. But duplicating that bigger file X really hurts performance.

    


    Additional info :

    


    All these videos will be encoded with H264, H265, VP8 or VP9 and contained in MKV or MP4 as they are codec copy friendly. Only one of these formats will be used.

    


    This is for a special case screen recorder that's supposed to run on cloud and preemptive remote desktops (Linux).
HTML/JS browser front-end captures the screen and sends to the back-end (Golang) as chunks through HTTP. Network route is undefined and unreliable as there can be firewalls/proxies between the front-end and the back-end. Therefore, we can't use connections like UDP. So the only option is to send video chunks using HTTP.

    


    It's FOSS on https://github.com/HasinduLanka/screencorder

    


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