Because 10bit x265 is not hardware-decoded by older devices, use:

When Leo opened the file, the movie played perfectly for exactly twelve minutes. Then, the screen flickered. The 10-bit color depth, designed for billions of colors, began to bleed. The shadows on the screen didn't just turn black; they turned into a void that seemed to pulse with the rhythm of Leo’s own heartbeat.

: The High-Efficiency Video Coding (HEVC) standard. It provides much better compression than older formats (like x264), meaning you get higher visual quality at a smaller file size.

It looks like you're referencing a file name for the movie —likely a high-quality rip (1080p, 10-bit color, HEVC/x265 codec, 6-channel audio).