The string you've provided, gravity3d20131080pblurayhalfsbsdtsx264, is a file naming convention commonly used in media libraries to describe the technical specifications of a specific movie release. Movie Summary
Gravity (2013) 1080p BluRay Half-SBS DTS x264 release is widely considered one of the best 3D experiences available for home viewing, particularly when paired with "solid" (forced or high-quality) subtitles. This specific technical format— Half-SBS (Side-by-Side) gravity3d20131080pblurayhalfsbsdtsx264 best
Final verdict: Yes, as a practical, playable, high-quality 3D rip, this filename represents the best you’ll commonly find. Treasure it. Because physical 3D Blu-rays are going out of print, and eventually, half-SBS encodes may be the only way left to experience Gravity as Cuarón intended — in three dimensions. Final verdict: Yes, as a practical, playable, high-quality
The film was a massive technical achievement, winning seven Academy Awards, including Best Director and Best Visual Effects. Final verdict: Yes
The file you identified is a solid, mid-tier 3D copy. It is not the "absolute best" (because it is compressed using x264 and is Half-SBS rather than Full-SBS or Frame Packed), but for a standard 1080p 3D TV or a VR headset like an Oculus Quest, it is perfectly watchable and high quality.
Verdict:Even a decade later, this 1080p SBS encode remains the benchmark for home 3D. If your setup is calibrated correctly, the "Best" version of this file provides an experience that is arguably more immersive than the 4K 2D version.