David Lemieux is the Grateful Dead organization's current "keeper of The Vault", having taken over for the band's original archivist Dick Latvala, may he R.I.P.
Remastering The Grateful Dead Movie is his second major video project, the first being "The Closing of Winterland", which is also highly recommended.
Even though the Dead were at their creative peak in 1974 (my opinion, of course), the audio and video quality of the multitude of concert videos that have been released by and of this band arguably improves as we move forward in time, if for no other reason than technology. Simply stated, they were able to make a better recording in, say, 1990 than in 1974.
All that changed when when David Lemieux decided to go back to some of earlier masterpieces and painstakingly remaster them.
I own The Grateful Dead Movie on VHS and on LaserDisc. Yet they rarely get played due to lack of decent audio quality. There's simply so much more to enjoy from this band that's of so much better quality.
The remastered Grateful Dead movie on DVD is a treat for the eyes, ears, and spirit! If I'm not up off the couch dancing as if I were at a show, I'm sitting there mesmerized with an ear to ear grin, sort of like the dude in the front row of the show!
THE REAL TREAT, however, is the "second disc", which includes footage that never made it to the original movie. In my opinion, the second disc with its never-seen-before-footage is where you'll find the real nuggets of pure joy, pure Grateful Dead heaven, the band at their best! Wait, oh just you wait, until you experince The Other One > Spanish Jam > Mind Left Body Jam > The Other One! Yeeow!
I own every piece of commercially available Grateful Dead video, and some that are not commercially available and this magical "Second Disc" is the finest bit Grateful Dead video available. Period.