Check if the stream served by mediamtx is available (paste it in the console window in browser for that stream)

detect_medimtx_stream_availability.js

// Find the video element that is supposed to play the stream
const videoElement = document.querySelector('video');

if (videoElement) {
  const stream = videoElement.srcObject;

  // Check if the stream is available and active
  if (stream instanceof MediaStream && stream.active) {
    // Get video tracks from the stream
    const videoTracks = stream.getVideoTracks();

    // Check if there are video tracks
    if (videoTracks.length > 0) {
      console.log('Video track is available');
    } else {
      console.log('No video track is available in the stream');
    }
  } else {
    console.log('No active stream is attached to the video element');
  }
} else {
  console.log('No video element found');
}