Its good, but cant handle multiple audio tracks...

Just bought this app.
Bad: Not possible to choose audio track from input (mkv) file, if there are many audio tracks inside (by the way it is also not possible in most of other converters here).
Good: There is a crop/resize picture option and quality tunings! (Usually there is no such options in most converters here).
PS: "Free Video Conveter" here able to choose audio track, but I decided to continue using Handbrake (its not from the Store), which is real swiss knife.

Nikita Mordasov about VidConvert