For the new 4k transfer, MPI used the original 16mm a/b film that the movie was shot on. It went through a five month restoration process at NOLO Digital Film in Chicago, with each frame being cleaned up digitally, before color correction – partially working from an earlier transfer by Hooper, and then the director gave his own notes. "MPI, they really committed," said Hooper, "and with the magic of 4K, what can be done in restoration was done.

It won't be an alarmingly pristine recreation: After all, the grime and the grit is an inherent part of 16mm. But it's the sound – from that eerie flash bulb creak to the buzzing, ripping sound of the chain – that Hooper believes will traumatize another generation of cineastes. He said, "The 7.1 sound is incredible, because it's really happening in your head.

Texas Chain Saw Massacre (4 Disc 40th Anniversary DVD / Blu-Ray Combo )

To celebrate the 40th anniversary of this beloved horror classic, MPI Media Group presents the original restored film in an all-new 4k scan authorized by Tobe Hooper, featuring a dynamic new 7.1 surround sound mix and never-before-seen outtakes!

Feature presentation and 3 Commentary tracks (including a new Commentary track by Tobe Hooper)

The 4 disc version is 2 BDs and 2 DVDs. The content on the bonus DVDs/BDs is identical and includes:

- The Texas Chain Saw Massacre: The Shocking Truth (480p, 1:12:54)
- Flesh Wounds: Seven Stories of the Saw (480p, 1:11:42)
- A Tour of the TCSM House with Gunnar Hansen (480p, 8:03)
- Off the Hook with Teri McMinn (1080p, 17:02)
- Production Manager Roz Bozman interview (480p)
- New Deleted Scenes & Outtakes (1080p) **NEW/NEVER BEFORE RELEASED**
- New interview with actor John Dugan (“Grandpa”) (1080p) **NEW/NEVER BEFORE RELEASED**
- New interview with editor J. Larry Carroll (1080p) **NEW/NEVER BEFORE RELEASED**
- Deleted Scenes & Outtakes (480p, 25:24)
- Blooper Reel (480p, 2:23)
- Outtakes from "The Shocking Truth" (480p, 7:34)
- Dr. W.E. Barnes Presents "Making Grandpa" (still gallery)
- Still Gallery (posters, lobby cards, etc)
- Trailer 1 (480p, 1:43)
- Trailer 2 (480p, 1:30)
- TV Spot 1 (480p, 0:34)
- TV Spot 2 (480p, 0:35)
- TV Spot 3 (480p, 0:33)
- Radio Spot 1 (480p, 0:32)
- Radio Spot 2 (480p, 0:32)
....and more

Texas Chain Saw Massacre (40th Anniversary Blu-Ray)

Feature presentation and 3 Commentary tracks (including a new Commentary track by Tobe Hooper)