If you are digitizing your Blu-ray collection into an MKV container, aim for these specifications to ensure "archive-level" quality: H.264 (AVC) for 1080p or H.265 (HEVC) for 4K. Resolution: 1920x1080 or 3840x2160. Aspect Ratio: 1.85:1 (Theatrical wide-screen). Audio: 5.1 Surround Sound (DTS-HD). A Legacy That Never Bleeds
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