@jmclaus Can we move this method into `05_video_quality_control.js`? You can subscribe on [`play`](https://github.com/edx/edx-platform/blob/jmclaus/disable_hd_control_when_hd_qualities_not_available/common/lib/xmodule/xmodule/js/src/video/03_video_player.js#L529) event there. Because it looks like quality control specific.