I'm trying to extract frames from a video on angular. I found several post here on SO, especially this post https://stackoverflow.com/a/32708998, i've tried to implement first solution but i can't get any frame i still don't know why. So i research about it again and i found this resource videotoframes he already has a type version, after some workaround i finally can extract the frames from video like this and put it to canvas.

But the thing is, i need to specify how many frames would i wanted from this. here's what i did

  loadImages() {
    this.loading = true;
    this.video.getFrames('/assets/ForBiggerBlazes.mp4', 375, VideoToFramesMethod.totalFrames).then((frames) => {
      console.log(frames);
      frames.forEach((frame) => {
        var canvas = document.createElement('canvas');
        canvas.width = frame.width;
        canvas.height = frame.height;
        canvas.getContext('2d').putImageData(frame, 0, 0);
        document.getElementsByTagName('div')[0].appendChild(canvas);
      });
    });
  }

number 375 is an estimate how many frame my video is, is there any way to get how many frames a video have on upload?