Recherche avancée

Sur d’autres sites (12268)

• 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

  


• Flutter_ffmpeg is discontinued. Is there a way still to use it in a flutter project ?

  13 avril, par Saad Mushtaq

  I have been using the flutter_ffmpeg package in a Flutter project. But now, when I run the project, I get a build failure exception. Is there a way to still use it in a Flutter project ?

  


  FAILURE : Build failed with an exception.

  


  

  • What went wrong :
Execution failed for task ':app:checkDebugAarMetadata'.

  


  


  


  Could not resolve all files for configuration ':app:debugRuntimeClasspath'.
Could not find com.arthenica:mobile-ffmpeg-https:4.4.
Searched in the following locations :
- https://dl.google.com/dl/android/maven2/com/arthenica/mobile-ffmpeg-https/4.4/mobile-ffmpeg-https-4.4.pom
- https://repo.maven.apache.org/maven2/com/arthenica/mobile-ffmpeg-https/4.4/mobile-ffmpeg-https-4.4.pom
- https://storage.googleapis.com/download.flutter.io/com/arthenica/mobile-ffmpeg-https/4.4/mobile-ffmpeg-https-4.4.pom
- https://jcenter.bintray.com/com/arthenica/mobile-ffmpeg-https/4.4/mobile-ffmpeg-https-4.4.pom
Required by :
project :app > project :flutter_ffmpeg

  


  


• How to run FFmpeg command in Java (Windows)

  10 décembre 2024, par SAI GIRI CHARY AOUSULA

  I executed the below FFmpeg terminal command in command prompt successfully. But I am unable to execute this command in my Java program. I can execute all other FFmpeg commands which doesn't have double quotation marks in my Java program. Here I have problem only with double quotation marks("...").

  


  ffmpeg -i "concat:C:\\journalism\\videos\\vid1.ts|C:\\journalism\\videos\\vid2.ts" -c copy C:\\journalism\\videos\\output.mp4


  


  I can execute above in command prompt successfully. But I tried as below in my Java code :

  


  Runtime.getRuntime().exec("C:\\ffmpeg\\bin\\ffmpeg -i 'concat:C:\\journalism\\videos\\vid1.ts|C:\\journalism\\videos\\vid2.ts' -c copy C:\\journalism\\videos\\output.mp4");


  


  Even I tried by replaced the double quotation marks with single quotation marks. But did not succeed.

  


  Can anyone please help me to get out of this issue ?

  


  Thanks in advance