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• How to display and capture webcam stream at the same time ? [migrated]

  5 octobre 2011, par 12hys

  This command works perfectly for saving a webcam stream to a file :

  ffmpeg -f alsa -i default -itsoffset 00:00:00 -f video4linux2 -s 1280x720 -r 25 -i /dev/video0  out.avi

  How would I simultaneously display this captured stream on my computer screen ?

• ffmpeg save hls to m3u8 with mp4 segments

  9 juin 2018, par J. Omen

  I am looking for a command ffmpeg, which saving live input (rtmp or hls) to hls m3u8 with mp4 segments files. I know that it is possible to do, i.e. there is infohttps://bitmovin.com/hls-news-wwdc-2016/ but every command I tries - makes ts files. Anyone know solution ?

• Im getting error when generating thumbnails using ffmpeg in firebase functions

  5 juillet 2020, par Sajjad

  I'm writing this code for generating thumbnail from a video uploaded to firebase storage using FFmpeg, I am saving thumbnails first in the temp directory and then uploading it to firebase storage. The thumbnails are saved in temp dir but I'm getting an error while saving it to firebase storage. (EISDIR ERROR)

  


  const targetTempFilePath = path.join(os.tmpdir(), targetTempFileName);
const targetStorageFilePath = path.join(path.dirname(filePath), targetTempFileName);
ffmpeg.ffprobe(req.body.videoUrl, (err, metaData) => {
    if (err) {
      console.log(err);
    }

    fileDuration = metaData.format.duration;
  });

  ffmpeg(req.body.videoUrl)
    .on("filenames", (filenames) => {
      console.log("Will generate " + filenames.join(", "));
      thumbsFileUrl = "" })
    .on("end", () => {
      console.log(targetTempFilePath);
      admin
        .storage()
        .bucket()
        .upload(targetTempFilePath, {
          destination: targetStorageFilePath,
        })
        .then(() => {
          console.log("Output audio uploaded to", targetStorageFilePath);
          // fs.unlinkSync(tempLocalFile);
          return res.status(200).json({
            success: true,
            thumbsFileUrl: thumbsFileUrl,
            fileDuration: fileDuration,
          });
        })
        .catch((err) => {
          console.log(err);
          return res.json({ success: false });
        });
    })

    .screenshots({
      // Will take screens at 20%, 40%, 60% and 80% of the video
      count: 2,
      folder: targetTempFilePath,
    });