300 -2006- Open Matte -1080p Web-dl X265 Hevc 1...

It looks like you’re referencing a file naming convention for a video release. Based on the string you provided:

: Unlike the standard 2.35:1 theatrical widescreen version, the Open Matte version typically uses a 300 -2006- OPEN MATTE -1080p WEB-DL x265 HEVC 1...

1080p WEB-DL: This indicates a high-definition (1920x1080) file downloaded directly from a streaming service or digital store, rather than being ripped from a physical Blu-ray. It looks like you’re referencing a file naming

Part 6: Is this the definitive version?

To conclude the search for the best way to watch 300: To conclude the search for the best way

pixels. The "p" stands for progressive scan, meaning every line of each frame is drawn in sequence, resulting in a smoother image than "i" (interlaced) formats. Source: WEB-DL

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You hate black bars on your TV and want a high-efficiency file that maintains the film's gritty, artistic texture.