Hacker Read

kenrikm · 2015-09-17 09:54:49

Likely HDMI 1.4, 24fps @ 4k, 30fps @ UHD. Interestingly the new Apple TVs hardware is capable of 4k even though it does not currently "support it" (HDMI 1.4, and A8 with can play 4k)

auggierose | karma 4751 | avg karma 1.77 · | 2020-10-13 12:55:02

It is 4K on an Apple TV. At least it looks like it :-D

blackflame7000 | karma 1423 | avg karma 0.99 · | 2018-05-24 06:27:00

anticensor | karma 1400 | avg karma 0.58 · | 2019-03-04 20:49:12+00:00

4k TV is 26.52 Gbps at 16:9 aspect ratio, 100fps.

phkahler | karma 20899 | avg karma 2.69 · | 2020-06-18 19:51:04+00:00

It's a samsung tv and supports 4k at 4:4:4 60hz if I recall correctly.

varenc | karma 4948 | avg karma 5.69 · | 2021-04-20 19:18:31+00:00

The old ATV 4k model already supports 4k at 60fps. The only improvement is that it supports HDR 4k content at 60 fps.

From the old spec page [0]:

   H.264/HEVC SDR video up to 2160p, 60 fps, Main/Main 10 profile
   HEVC Dolby Vision (Profile 5)/HDR10 (Main 10 profile) up to 2160p

And the new spec page [1]:

   H.264/HEVC SDR video up to 2160p, 60 fps, Main/Main 10 profile
   HEVC Dolby Vision (Profile 5)/HDR10 (Main 10 profile) up to 2160p, 60 fps

[0] https://support.apple.com/kb/SP769?viewlocale=en_US&locale=e...

[1] https://www.apple.com/apple-tv-4k/specs/

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mkhalil | karma 832 | avg karma 2.82 · | 2014-10-16 16:12:13

It's 4k.

wahnfrieden | karma 6701 | avg karma 1.65 · | 2023-05-18 23:38:44

daodedickinson | karma 250 | avg karma 0.47 · | 2020-10-09 23:52:59+00:00

balls187 | karma 6403 | avg karma 2.06 · | 2019-06-25 17:25:12

braum | karma 293 | avg karma 2.38 · | 2021-04-20 17:40:21

AFAIK HDR is in the current 4k apple tv.

mdre | karma 157 | avg karma 3.14 · | 2020-12-22 12:03:29

That's UHD. 4K is defined as 4096px wide. But I guess the mass adoption of the term 4K in consumer electronics changed the definition.

zanny | karma 13629 | avg karma 2.97 · | 2018-02-12 17:29:16

HDMI 2.0 does 4k@60.

bestouff | karma 1903 | avg karma 4.98 · | 2021-12-22 10:33:11

I think it doesn't support more than HDMI 1.4, which means 30Hz @ 4k.

nwh | karma 5848 | avg karma 3.22 · | 2014-09-05 09:17:00+00:00

I looked at 4K TVs recently, and if you look through the advertising they're all 4K at 30hz (ie, totally worthless for viewing anything on) due to the limitations of HDMI 1.4.

ianburrell | karma 2394 | avg karma 1.62 · | 2017-03-24 09:26:38

4K is 2160p. Digital theater 4K is 4096x2160 but UHDTV 4K is 3840x2160.

8K is 4320p. UHD 8K is 7680×4320.

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corysama | karma 10761 | avg karma 4.62 · | 2020-03-16 11:17:55

8k AND 120fps. I think the proposal is 8K@60, 4K@120.

jwcooper | karma 1182 | avg karma 6.6 · | 2017-01-05 16:52:37+00:00

More details about the spec are here: http://www.hdmi.org/manufacturer/hdmi_2_1/index.aspx

Looks like it maxes out at 4k@120Hz

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willis936 | karma 8244 | avg karma 2.17 · | 2022-12-19 08:25:32

rpi 4 HDMI can't do 4K120. I'm looking for a relatively new piece of hardware. Recent Apple TVs have the PHY for it but it isn't enabled in software.

Also, Apple's decode engine struggles with 4K60. The right answer is likely a full-on mini-PC, but it feels like a sledgehammer for a fly.

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linc01n | karma 98 | avg karma 2.45 · | 2014-05-15 11:29:42+00:00

"H.264?H.265???4K@30?/?". 4k@30fps