The HTMLMediaElement.error property is the MediaError object for the most recent error, or null if there has not been an error. When an error event is received by the element, you can determine details about what happened by examining this object.

A MediaError object describing the most recent error to occur on the media element or null if no errors have occurred.

This example establishes a video element and adds an error handler to it; the error handler logs the details to console.

const videoElement = document.createElement("video");
videoElement.onerror = () => {
  console.error(
    `Error ${videoElement.error.code}; details: ${videoElement.error.message}`,
  );
};
videoElement.src = "https://example.com/bogusvideo.mp4";

• HTMLMediaElement: Interface used to define the HTMLMediaElement.error property
• <audio> and <video>