                  player.unload();
                    player.detachMediaElement();
                    player.destroy();
                    player = null;
                }
            }
            player = flvjs.createPlayer(mediaDataSource, {
                enableWorker: false,
                lazyLoadMaxDuration: 3 * 60,
                seekType: 'range',
            });
            player.attachMediaElement(element);
            player.load();
        }

        function flv_start() {
            pl