Secondary video quality if first is not found

[xtrandom]

Thanks for the great work!

Is it possible to add a true/false option to get secondary (one lower) video quality if first is not found?

For example, if I request 4k and it is not available, then it should get 1080p instead. And if option is set to 1080p and it's not found, then get 720p instead.

Thanks for all the hard work!

[KatCountryGirl]

yes please!