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xxray

macrumors 68040
Jul 27, 2013
3,077
9,299
You can't see the difference anyway. Usually you can't see the difference between 1080p & 720p on a iPhone either, and when you can it's hardly any different.

You can definitely tell the difference. I used to have a Galaxy S9+ and the evidence between 1080 and 1440 was obvious, and that was on an even smaller screen than the iPhone XS Max.
 

drewdove

macrumors member
Jul 22, 2013
32
12
Are videos shot in 4K shown in UHD on the iPhone? It would make a good AB comparison when compared to the YouTube upload of that video. Personally if I’m limited to 1080p 4:4:4 with the expanded colors I could live with it.
 

macfacts

macrumors 601
Oct 7, 2012
4,792
5,613
Cybertron
Can you back this up with any citations? I’m pretty sure my intel desktop chip doesn’t have any hardware support specifically for the vp8 codec either.

Your desktop is using software decoding (using the general purpose cpu).

When google tried to use software decoding for high resolutions, the YouTube app was laggy, using a lot of battery and people were complaining.
 

I7guy

macrumors Nehalem
Nov 30, 2013
34,313
24,050
Gotta be in it to win it
Your desktop is using software decoding (using the general purpose cpu).

When google tried to use software decoding for high resolutions, the YouTube app was laggy, using a lot of battery and people were complaining.
When was that? And the qualcomm chipset has hardware support for the vp8 codec? What happens when the vp9 codec comes out? Those videos won't play on android?
 

macfacts

macrumors 601
Oct 7, 2012
4,792
5,613
Cybertron
When was that? And the qualcomm chipset has hardware support for the vp8 codec? What happens when the vp9 codec comes out? Those videos won't play on android?

A lot of android devices have vp8 and vp9 hardware decoding support.
 

KooL BeAnZ

macrumors 6502
Original poster
Apr 4, 2012
337
508
You can't see the difference anyway. Usually you can't see the difference between 1080p & 720p on a iPhone either, and when you can it's hardly any different.

I can easily tell the difference between 720, 1080 and 1440.

2160 would be useful if Apple move to 4K on iPad or iPhone (SONY Xperia 1 has 4K HDR).
[doublepost=1560186969][/doublepost]
It's because iOS devices have no hardware support for vp8 codec and are too slow to use software decoder at high resolutions.

Too slow?

So my iPhone XS Max is too slow to do YouTube 1440p?
 

Tsepz

macrumors 601
Jan 24, 2013
4,832
4,648
Johannesburg, South Africa
I can easily tell the difference between 720, 1080 and 1440.

2160 would be useful if Apple move to 4K on iPad or iPhone (SONY Xperia 1 has 4K HDR).
[doublepost=1560186969][/doublepost]

Too slow?

So my iPhone XS Max is too slow to do YouTube 1440p?

e0696b80b4072f4d1e28f876bd093d0b.jpg

https://www.google.co.za/amp/s/appl...-introduces-5-new-custom-silicon-engines/amp/
 

drewdove

macrumors member
Jul 22, 2013
32
12
Quite the contrary. Google is using VP8 which is a open source royalty free codec. Apple refuses to support it (for no good reason). YouTube has to compress and host all this video - it makes sense they won't support multiple codecs.

Hey, YouTube is giving us UHD content and should be congratulated for it. Especially if it’s our created content that is available like they’re a UHD public access channel.
 
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