Recherche avancée

Sur d’autres sites (11057)

• FFmpeg error with ffmpeg.FS("readfile", "output.mp4"). trying to get ffmpeg to work in the react app

  21 juin 2024, par Paul Tham

   const stackVideos = useCallback(
    async (video1) => {
      try {
        console.log("Fetching video2 from storage...");
        const video2Ref = ref(storage, "video2.mp4");
        const video2Url = await getDownloadURL(video2Ref);
        const video2Blob = await (await fetch(video2Url)).blob();

        console.log("Writing video1 to FFmpeg FS...");
        await ffmpeg.FS("writeFile", "video1.mp4", await fetchFile(video1));

        console.log("Writing video2 to FFmpeg FS...");
        await ffmpeg.FS("writeFile", "video2.mp4", await fetchFile(video2Blob));

        console.log("Files in FFmpeg FS after write:");
        const files = await ffmpeg.FS("readdir", "/");
        console.log(files);

        const { start, end } = inputs[0];
        const startSeconds = new Date(`1970-01-01T${start}Z`).getTime() / 1000;
        const endSeconds = new Date(`1970-01-01T${end}Z`).getTime() / 1000;
        const duration = endSeconds - startSeconds;

        console.log("Running FFmpeg command...");
        await ffmpeg.run(
          "-i",
          "video1.mp4",
          "-ss",
          startSeconds.toString(),
          "-t",
          duration.toString(),
          "-i",
          "video2.mp4",
          "-filter_complex",
          "[0:v]scale=1080:-1[v1];[1:v]scale=-1:1920/2[v2scaled];[v2scaled]crop=1080:1920/2[v2cropped];[v1][v2cropped]vstack=inputs=2,scale=1080:1920[vid]",
          "-map",
          "[vid]",
          "-map",
          "0:a",
          "-c:v",
          "libx264",
          "-crf",
          "23",
          "-preset",
          "veryfast",
          "-shortest",
          "output1.mp4"
        );

        console.log("Files in FFmpeg FS after run:");
        const filesAfterRun = await ffmpeg.FS("readdir", "/");
        console.log(filesAfterRun);

        console.log("Reading output1.mp4 from FFmpeg FS...");
        const data = await ffmpeg.FS("readfile", "output1.mp4");
        console.log("after the FS readfile");
        const url = URL.createObjectURL(
          new Blob([data.buffer], { type: "video/mp4" })
        );
        setStackedVideo(url);
        setOutputFileReady(true); // Mark output file as ready
      } catch (err) {
        console.error("FFmpeg error output:", err);
        setError(`FFmpeg run error: ${err.message}`);
        setIsProcessing(false);
      }
    },
    [inputs]
  );


  


  My error seems to be stemming from this line :

  


   const data = await ffmpeg.FS("readfile", "output1.mp4");


  


  Seeing the ffmpeg.wasm documentation i thought the functions for some of the functions had changed, but when I changed it, it seemed like they did not recognise the new functions. Sometimes this will also give me some other errors like worker.js which I dont understand enough to debug this myself.

  


  words word words words words words word words words wordswords word words words wordswords word words words wordswords word words words wordswords word words words wordswords word words words words

  


• Stop termux on battery low [closed]

  9 août 2022, par Wouter van Dam

  TL ;DR BELOW

  


  I have a second phone who is converting some mkv files through ffmpeg in termux. But the phone can't get enough charging power from the charger because it uses to much power. So it state is always charging even if it isn't charging. No I want to run in termux a script that hits a kill command when the battery is low. So that it doesn't corrupt my files when shutting down because it just cant survive the night with my battery capacity. Any ideas of achieving this ?

  


  TL ;DR
How to run a termux command or script async with a event or looping function so that it kills the process when battery power is low.

  


• stream icecast stream to owncast

  6 février 2024, par Arch

  I have a icecast stream at this address :
https://some_icecast_station.org/radio/8000/radio.mp3

  


  I want this to be streamed to

  


  rtmp ://some_owncast_server.org:19350/live in combination with

  


  I was looking the following command :

  


  ffmpeg -i https://some_icecast_server.org:8000/radio.mp3 -c:v libx264 -c:a aac -f flv rtmp ://some_owncast_server:19350/live

  


  This command does not work, what am i doing wrong and where to put the key for the owncast server ?

  


  Thanks in advance