Do we really need this list? Could we use `large` value as default for LD qualities? And it will works [so](https://developers.google.com/youtube/js_api_reference#Playback_quality):

>If you call the setPlaybackQuality function with a suggestedQuality level that is not available for the video, then the quality will be set to the next lowest level that is available. For example, if you request a quality level of large, and that is unavailable, then the playback quality will be set to medium (as long as that quality level is available).