A "Superwide Open Matte" is impossible in a single video file. This spec likely describes a custom hybrid or a variable aspect ratio project :
Jurassic Park (1993) - 35mm Scan [1080p] [Cinema DTS] [Open Matte v1.0] jurassicpark199335mm1080pcinemadtssuperwideopenmattev10
The official 4K Blu-ray features a DTS:X remix. While immersive, it adds sounds that were never in the original film. The rain is too directional. The T-Rex roar is too subsonic. The footsteps are too loud. It sounds like a theme park ride. A "Superwide Open Matte" is impossible in a
No heavy Digital Noise Reduction (DNR); just pure, organic film grain. organic film grain.