The Argentinian National Archive - Archivo Prisma, uploaded a snippet of the Freddie Mercury Tribute Concert in 480p. It contains a part of the first section of the show:
Barcelona, I Want To Break Free, Roger presenting Def Leppard, Animal, Let's Get Rocked, and Now I'm Here with Brian May.
Check if it's in better quality than other sources, and use it at convenience.
Ahh, thanks for this ! Best quality I've seen.
21:14 is my all-time favourite Brian May backing vocal. It's high in the mix on the TV broadcast, but not the DVD.