I just came across this site which has trailers in HD Video (30mbps!) and Lossless 5.1 audio!
http://www.movie-list.com/forum/show...Trailers/page9
Man Of Steel Trailer 5

1:39 Mins
24fps, 1920 x 804, 30mbps, 393mb, includes a LPCM 5.1 track.
Right click and save:
http://videos.movie-list.com/vob/dja...tshdma1080.mkv
Man of Steel Trailer 4

3:10 Mins
24fps, 1920x804, 635mb, 28mbps, includes a LPCM 5.1 audio track.
Right click and save:
http://videos.movie-list.com/vob/dja...tshdma1080.mkv
Star Trek Into Darkness Trailer 3

2:28 Mins
24fps, 1920 x 804, 526mb, 29.7mbps, includes a LPCM 5.1 audio track.
Right click and save as:
http://videos.movie-list.com/vob/dja...tshdma1080.mkv