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• How to overlay two video files including audio of each video using ffmpeg"

  11 janvier 2023, par user255048

  i would like to merge some music (video file) and singing (video file) into one video file.

  


  i've tried with this :

  


  ffmpeg -i music.mp4 -itsoffset 2 -i sing01.mp4 -filter_complex  overlay=635:300 test.mp4


  


  and everything is fine, except that i cannot hear the singing. what i should add to this command to do the job correctly ?

  


  thanks

  


• Turn an FFmpeg command into an FFmpeg wasm exec function

  30 novembre 2024, par SeriousLee

  I have this gnarly FFmpeg command :

  


  ffmpeg -i music.mp3 -i video.mp4 -i speech.mp3 -filter_complex "[0:a]atrim=0:$(ffprobe -i speech.mp3 -show_entries format=duration -v quiet -of csv=p=0),volume=0.08[trimmed_music]; [2:a]volume=2[speech]; [1:v]loop=-1,trim=duration=$(ffprobe -i speech.mp3 -show_entries format=duration -v quiet -of csv=p=0),setdar=9/16[vout]; [trimmed_music][speech]amix=inputs=2:duration=first[aout]" -map "[vout]" -map "[aout]" -c:v libx264 -crf 23 -preset medium -c:a aac -b:a 192k final_output.mp4


  


  What it does is :

  


  

  • Get the duration of a speech.mp3 file

  


  • Crop a video.mp4 to portrait dimensions

  


  • Trim a longer music.mp3 file to the duration of the speech

  


  • Loop a the video and trim the final loop so that the whole thing matches the duration of the speech

  


  • Adjust the volume of the music and speech

  


  • Combine them all into a single video with talking (speech) and music

  


  


  I can't figure out how to run it using the FFmpeg wasm. I realise ffprobe isn't a thing with the wasm so we'll have to find a different way to get the duration of the speech.mp3 by probably breaking it up into 2 or more exec functions, but I have no idea how to do that, which is why I'm here asking for help.

  


  For reference, here's the function into which I want to insert this exec function, but feel free to change it however needed. And let me know if I need to provide more information.

  


    const processVideo = async (speech, video, music) => {
    const ffmpeg = new FFmpeg();

    // ffmpeg loading code goes here, assume that part works without issue

    await ffmpeg.writeFile("video.mp4", new Uint8Array(video));
    await ffmpeg.writeFile("speech.mp3", new Uint8Array(speech));
    await ffmpeg.writeFile("music.mp3", new Uint8Array(music));

    await ffmpeg.exec([
      // command(s) should go here
    ]);

    const fileData = await ffmpeg.readFile("final_output.mp4");
    const blob = new Blob([fileData.buffer], { type: "video/mp4" });
    const blobUrl = URL.createObjectURL(blob);

    return blobUrl;
  };


  


• Anomalie #2467 : droits du rédacteur

  4 novembre 2013, par Suske -

  Suite au retour irc, je reformule :

  - éditer le logo d’un site publié si on est rédacteur, c’est pas normal => bug
  - éditer un site proposé si on est rédacteur et que les rédacteurs ne peuvent pas proposer, c’est pas normal => bug

  De manière générale, comme le site est "proposé" dès la validation, même si les rédacs peuvent proposer des sites, ils ne doivent pas pouvoir modifier les proposés, par analogie avec les articles.