Rekall is a company that provides memory implants of vacations, where a client can take a memory trip to a certain planet and be whoever they desire.

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Cake day: June 8th, 2025

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  • Got to disagree with you on that one. It was universally true for the move from ASP/H263 to AVC/H264. It’s not the case with H264 to H265 on a universal basis.

    You can forget about such results if you’re dealing with grain (and preserving it). Things are a bit better with “complex” content (oceans, snow storms etc), but you’ll be struggling to get 50% space savings (more so with pre 2005 content).

    The general bitrate level is also a massive factor.

    Low bitrates, sure, even more than 50%. But you’ll be still be dealing with artifacts.

    Medium to high bitrates (i.e. targeting a “near transparent” encode), you often won’t be able to replicate a H264 encode at 12 Mbps (1080p 24 FPS) with a 6 Mbps H265 encode. Sometimes it works, but often it doesn’t; I find you often need to go with 9-10 Mbps.

    Haven’t tried H266/VVC. For AV1 the x4 increase in encode times didn’t seem to be worth it at high bitrates. Although for low bitrates AV1 seems to be modestly better than H265 (for far worse encore times).

    This is all for CPU encodes at the “VerySlow” preset (1/2 for AV1 if I remember correctly).