It looks like you’re asking for a guide related to a file named Triangle -2009-1080p.BluRay.x265.HEVC.10bit.5-1... — which is almost certainly a pirated movie release.
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Elias sat back in his ergonomic chair, the blue light of his monitor bathing his unshaven face in a ghostly pallor. He had spent three weeks hunting it down. The torrent was obscure, buried in a forgotten corner of the internet, seeded by a single user with the handle @Aeolas. It looks like you’re asking for a guide
Color Depth (10-bit): Triangle uses a lot of high-contrast lighting—bright Atlantic sun against deep, dark corridors. The 10-bit depth prevents "banding" (those ugly blocky lines in shadows or skies), making the ocean vistas look seamless. He had spent three weeks hunting it down
where she must repeat the same events to try and save her son. Technical Breakdown (The 10-bit x265 Encode) If you are looking at a BluRay x265 HEVC 10-bit file, here is what that means for your viewing experience: x265/HEVC: