Greasy Fork

Request Update:

Change

        function isPlayerAvailable() {
            script.ytplayer = getVideoPlayer();
            return script.ytplayer !== null && script.ytplayer.getVideoData().video_id;
        }

to

        function isPlayerAvailable() {
            script.ytplayer = getVideoPlayer();
            return script.ytplayer && typeof script.ytplayer.getVideoData === 'function' && script.ytplayer.getVideoData().video_id;
        }

getVideoData might be assigned after the DOM element is inserted. At that time, error will occur.

Thank you for reporting, updated!