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Autres articles (39)

  • 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

  • MediaSPIP Player : problèmes potentiels

    22 février 2011, par

    Le lecteur ne fonctionne pas sur Internet Explorer
    Sur Internet Explorer (8 et 7 au moins), le plugin utilise le lecteur Flash flowplayer pour lire vidéos et son. Si le lecteur ne semble pas fonctionner, cela peut venir de la configuration du mod_deflate d’Apache.
    Si dans la configuration de ce module Apache vous avez une ligne qui ressemble à la suivante, essayez de la supprimer ou de la commenter pour voir si le lecteur fonctionne correctement : /** * GeSHi (C) 2004 - 2007 Nigel McNie, (...)

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

Sur d’autres sites (7090)

  • ffmpeg set output resolution by resizing image

    3 janvier 2020, par Martin

    I’m trying to use ffmpeg for rendering video where an audio file and image are taken as inputs, and turned into a video (basically a music video) with the audio file playing for the duration of the video.

    My current working command :

    ffmpeg -loop 1 -framerate 2 -i "front.png" -i "testWAVfile.wav" -vf "scale=2*trunc(iw/2):2*trunc(ih/2),setsar=1,format=yuv420p" -c:v libx264 -preset medium -tune stillimage -crf 18 -c:a aac -shortest -vf scale=1920:1080  "outputVideo.mp4"

    Will set the output resolution of the video to whatever the resolution of the image is. Is there a way I can resize the image to enlarge it by a couple multiplications so that the output video resolution will be higher ?

    Like if my front.png image was 800x800 pixels, I could add something to my ffmpeg command to triple the resolution, so that the output video resolution is 2400x2400 ?

  • Stop ffmpeg from concealing corrupt frames

    22 mai 2021, par Dominic Mason

    To those who know the answer...

    


    I've been piping ffmpeg to aomenc quite successfully. Problem is, I'm sometimes getting source files for ffmpeg with false I-frames. I've loaded the files into virtualdub, and got the same result. There are some dummy frames, usually fake I-frames in a few of the files I have. So obviously, I want ffmpeg to simply drop such frames. I added the -err_detect aggressive -fflags discardcorrupt flags, but ffmpeg isn't having it. At the front of one vid I have a false I frame, but instead of dropping it I get :

    


    [h264 @ 0000000002ab8c00] concealing 8160 DC, 8160 AC, 8160 MV errors in P frame


    


    The result is I have a grey colored frame at the front of the video. So, I've read the other answers. Is there any other way than discardcorrupt of forcing ffmpeg to automatically drop these frames, or do I have to manually remove them ? I'm using a windows build of ffmpeg from gyandev in case that matters, compiled about a month ago.

    


  • Why Safari does not play mp4 though Chrome plays it ?

    30 octobre 2022, par János

    This mp4 is generated from a gif : https://t44-post-cover.s3.eu-central-1.amazonaws.com/gp2w.mp4

    


    It is playable on Chrom, not on Safari. Why ? What is the problem ?

    


    This is the conversion command :

    


            await new Promise<void>((resolve, reject) => {&#xA;            ffmpeg&#xA;                .input(`/tmp/input_${imgId}.gif`)&#xA;                .outputOptions([&#xA;                    &#x27;-c:v libx264&#x27;,&#xA;                    &#x27;-movflags &#x2B;faststart&#x27;,&#xA;                    &#x27;-movflags frag_keyframe&#x2B;empty_moov&#x27;,&#xA;                ])&#xA;                .noAudio()&#xA;                .output(`/tmp/output_${imgId}.mp4`)&#xA;                .on(&#x27;end&#x27;, () => {&#xA;                    console.log(&#x27;MP4 video generated&#x27;)&#xA;                    resolve()&#xA;                })&#xA;                .on(&#x27;error&#x27;, (e) => {&#xA;                    console.log(e)&#xA;                    reject()&#xA;                })&#xA;                .run()&#xA;        })&#xA;</void>

    &#xA;

    Using ffmpeg-static :

    &#xA;

    const pathToFfmpeg = require(&#x27;ffmpeg-static&#x27;)&#xA;const ffmpeg = require(&#x27;fluent-ffmpeg&#x27;)().setFfmpegPath(pathToFfmpeg)&#xA;

    &#xA;

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