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Cake day: June 23rd, 2023

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  • Google is pushing av1 because of patents, but 266 is just plain better tech, even if it’s harder to encode.

    This same shit happened with 265 and vp9, and before that, and before that with vorbis/opus/aac.

    They’ll come back because it’s a standard, and has higher quality.

    Maybe this is the one time somehow av1 wins out on patents, but I’m encoding av1 and I’m really not impressed, it’s literally just dressed up hevc, maybe a 10% improvement max.

    I’ve seen vvc and it’s really flexible, it shifts gears on a dime between high motion and deep detail, which is basically what your brain sees most, while av1 is actually kind of worse than hevc at that to me, it’s sluggish at the shifts, even if it is better overall.














    1. They don’t have to, I have Gan chargers that do a lot.

    2. Less pressure on laptop manufactures to shrink as much.

    3. Duty load: the big one.

    You’re not just charging an hour at 20w and unplugging it, or tapering the charge, you could be using it at max rated output for days, that means much more stress, it needs to radiate more heat, and generally needs to be bigger.

    As for fluctuating load, shouldn’t be as much of an issue, laptops often do their own power conditioning because the battery is fairly rough, and you’re going from 12-20v down to 5 and 3.3 then 1.6 and 1.3 to vcc for the chip, there’s plenty of filtering at each stage and they’re isolated by the smps controllers and input caps.

    But pulling constant rated duty cycle basically doubles the size of power supplies normally, GaN technology helps a lot (which is why those little power bricks can do 100w+ now even though they got a lot more dense).