Fixed non-standard aspect ratio for SD video
Added --qhd as synonym for --qHD
Changed default bitrates
Changed media_subcategory from "movies" to "movie" to match with title key subcategory
* movie lookups that don't have a TMDb entry fail without this
Load metadata when using tmdb runtimes for series
Hack: reduce gain to compensate for difference in normalize and handbrake audio levels
Add subcategory hint to metadata loading