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*** AMD "Zen" thread (inc AM4/APU discussion) ***

Soldato
Joined
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Edge?! It's stuck at 1080p60 max for me there. Nothing above it.

fecc5e0ed774414bb3860b250e9641c6.png

Use a proper browser. :p;)

Your welcome.
 
Soldato
Joined
16 Nov 2013
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2,723
Really odd, Edge can't display anything over 1080p for me on any video, not even my own 4K 60FPS ones.

Hmm seems my Edge can't play VP9 content.
d9c26b3b9c424714ad6a1951a8af71fc.png

MSE & WebM VP9 is ticked for me, i dont recall changing any settings to get it but maybe i did, pay to google how
 
Soldato
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lol indeed, so what is the point?

Higher bit rate. Youtube allows more depending on resolution. 4K 60FPS runs at 45-68Mbs on YouTube, which still isn't even normal 1080p quality; and can have compression artifacting.

So if you have the Internet capability, you can get the proper quality and bandwidth for it.
 
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Soldato
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Ireland
Please explain, this makes no sense at all to me?

YouTube assigns Bit rate depending on resolution and FPS. So if you want to see the best quality, even if you only have a 1080p monitor, selecting 4K is the best option over all, as it'll have a far better Bit Rate, than even 1080p60Fps.

YouTube's 1080p bitrate is terrible, and if you watch a lot of that content in fullscreen 1080p, you'll notice the artifacts from compression rather easily.

So for many people it's well worth selecting the highest possible YouTube resolution to get the best quality, even if they have a monitor with lower resolution.


14dfe1d389e4407ca68a10ed1edac9be.png
 
Associate
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9 Feb 2017
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241
if you really want to stress your CPU out using downsampling youtube videos from 8K etc then set your monitor on 640x480 or 800x600.

Yet still I've got no idea why anyone would choose to downsample 8K or whatever resolution rather than pick the native resolution of your monitor, youtube is hardly 4:4:4 to begin with...
 
Associate
Joined
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YouTube assigns Bit rate depending on resolution and FPS. So if you want to see the best quality, even if you only have a 1080p monitor, selecting 4K is the best option over all, as it'll have a far better Bit Rate, than even 1080p60Fps.

YouTube's 1080p bitrate is terrible, and if you watch a lot of that content in fullscreen 1080p, you'll notice the artifacts from compression rather easily.

So for many people it's well worth selecting the highest possible YouTube resolution to get the best quality, even if they have a monitor with lower resolution.


14dfe1d389e4407ca68a10ed1edac9be.png
The increase in bit rate is for more pixels, not better sampling of those pixels or less compression, if anything 8K youtube footage is going to be far more compressed than 4k.
 
Soldato
Joined
13 Mar 2008
Posts
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Location
Ireland
if you really want to stress your CPU out using downsampling youtube videos from 8K etc then set your monitor on 640x480 or 800x600.

Yet still I've got no idea why anyone would choose to downsample 8K or whatever resolution rather than pick the native resolution of your monitor, youtube is hardly 4:4:4 to begin with...

It's not about stressing your cpu, it's about getting the best quality available if you have the connection. It does result in less visible compression due to the increased resolution and bit rate ( quality ).
4K on youtube is significantly better quality on even a 1440p monitor, than a 1440p video on youtube is.

I do know a little, I edit video, and work with it a lot. Even uploading to YouTube.

The average video I work with has a bit rate of 3540910kbps ( 3540.91 Mbs ), and the finished product on youtube is 4K 60fps 68Mbs.

Watching the 4K video even on a 1440p video is significantly better quality, than 1440p60 on when on fullscreen.

FTz9CrN.png
 
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Associate
Joined
28 Jan 2010
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Brighton
The increase in bit rate is for more pixels, not better sampling of those pixels or less compression, if anything 8K youtube footage is going to be far more compressed than 4k.

Incorrect.

Watching a video (in general) at a higher resolution than your monitor, for better bitrate, will result in better picture quality. Particularly if it's not RAW video, which is 99% of the time.

In the exact example for YouTube, there are 2 very straightforward things going on.

If we go back to this:

YouTube assigns Bit rate depending on resolution and FPS. So if you want to see the best quality, even if you only have a 1080p monitor, selecting 4K is the best option over all, as it'll have a far better Bit Rate, than even 1080p60Fps.

YouTube's 1080p bitrate is terrible, and if you watch a lot of that content in fullscreen 1080p, you'll notice the artifacts from compression rather easily.

So for many people it's well worth selecting the highest possible YouTube resolution to get the best quality, even if they have a monitor with lower resolution.


14dfe1d389e4407ca68a10ed1edac9be.png

Firstly you can see with simple maths that the higher resolutions actually have higher bitrate per pixel per frame. So 1 pixel of 4K60 has more information than 1 pixel of 1080p60.

This is because 4K60 is 4x the pixels of 1080p60, but the bitrate is up to 5.7x higher.

The second thing that's quite important is the YCbCr compression used in h264/VP9 (or 4:2:2).

Basically when you downsample 4k60 4:2:2 content, you can use the extra information to output 1080p60 4:4:4 video (also with higher information per pixel, in YouTube's case).
 
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