It might have been as good as its best parts, and only four minutes long (h/t to Gerry):
The video is, itself, an SF story, staring Fran Kanz (who had a lead role on Dollhouse as Topher) and Maurissa Tancharoen (who wrote for the show, including co-writing Epitaph One, far and away the best episode they ever did (as well as having a bit role as Kilo)). The story, told entirely in images without words, is not itself based directly on the show, but as io9 put it, it "thematically echoes" it. Certainly it's an elegant little tale, given the constraints it was clearly made under.
The song for which this is the video is "Remains", which was used in "Epitaph One", and which was written by the writers of the episode (Maurissa Tancharoen & Jed Whedon) as a budget-saving measure to avoid having to pay royalties for an actual song; I think it's fabulous, myself. But go ahead, watch the video and you can listen to the song, and judge for yourself.
This is all apparently a promo for the DVDs of Season Two of Dollhouse, which are out today. Only worth watching if you've already watched the far superior (and more consistent) Whedon shows Buffy the Vampire Slayer, Angel, Firefly and Dr. Horrible's Sing-Along Blog; otherwise don't bother with Dollhouse. But if you liked all those, then there's a lot to like in Dollhouse... at least if you stick to the good parts version and don't go doing something silly like watching the first five episodes of season one.