cruster
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Re: Pi 4 firmware, software stability improvements

Sun Jul 07, 2019 6:28 pm

Dear Raspberry Pi Engineers. It would be lovely if my new Pi4 could play Youtube really really smoothly better than my old Pi3 used to be able to do (sort of)

I even took the time to design & 3D print a nice system around it. :-)

Image
Image

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clicky
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Re: Pi 4 firmware, software stability improvements

Sun Jul 07, 2019 7:16 pm

Really nice. Thanks for posting pictures. :)

jamesh
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Re: Pi 4 firmware, software stability improvements

Sun Jul 07, 2019 7:17 pm

cruster wrote:
Sun Jul 07, 2019 6:28 pm
Dear Raspberry Pi Engineers. It would be lovely if my new Pi4 could play Youtube really really smoothly better than my old Pi3 used to be able to do (sort of)

I even took the time to design & 3D print a nice system around it. :-)

Image
Image
Is there any reason you think we are not looking this stuff? No need to ask, we do know what is needed. We have plenty of stuff to fix, as happens with all new releases, but this is close if not at the top of the list.
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cruster
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Re: Pi 4 firmware, software stability improvements

Sun Jul 07, 2019 7:27 pm

James. I don't doubt it. You guys have done miracles with this little SBC. Just itching & excited to see it unleashed & in full flow :-)

ejolson
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Re: Pi 4 firmware, software stability improvements

Sun Jul 07, 2019 7:50 pm

cruster wrote:
Sun Jul 07, 2019 6:28 pm
Image
Nice pictures. What kind of power supply are you using?

cruster
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Re: Pi 4 firmware, software stability improvements

Sun Jul 07, 2019 8:05 pm

Just a generic 5v 3A I had spare.
Image

haaldemir
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Re: Pi 4 firmware, software stability improvements

Mon Jul 15, 2019 10:11 am

Hello everyone,

with latest update youtube now good 1080p. but it seems horizontal lines middle of the screen when fast moving. It can be remove in future updates?

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Jimblob64
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Re: Pi 4 firmware, software stability improvements

Tue Jul 16, 2019 12:41 pm

Can confirm: using nothing but apt-get update & upgrade, the Pi 4 will now do 1080p60 YouTube videos in Chromium full screen- there's some occasional flicker or horizontal tearing, but it's otherwise smooth. (Monitor resolution was also set to 1080p60 at the time.)

Looking good so far.
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jamesh
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Re: Pi 4 firmware, software stability improvements

Tue Jul 16, 2019 1:04 pm

haaldemir wrote:
Mon Jul 15, 2019 10:11 am
Hello everyone,

with latest update youtube now good 1080p. but it seems horizontal lines middle of the screen when fast moving. It can be remove in future updates?
This is called tearing, and without making X double buffer (!) will be difficult to mitigate against. And changes to X are not generally something we do.
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hardwaremack-orginal
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Re: Pi 4 firmware, software stability improvements

Tue Jul 16, 2019 9:30 pm

if double buffer is what you need to make it not look bad... then why wouldn't you do it?

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hardwaremack-orginal
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Re: Pi 4 firmware, software stability improvements

Tue Jul 16, 2019 9:35 pm

1080p in 4K is still a slide show.

6by9
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Re: Pi 4 firmware, software stability improvements

Tue Jul 16, 2019 9:37 pm

hardwaremack-orginal wrote:
Tue Jul 16, 2019 9:30 pm
if double buffer is what you need to make it not look bad... then why wouldn't you do it?
It's not the way X does things, therefore is almost a complete rewrite of the whole windowing system.
Wayland and Weston were attempts to do this, but when they got there they also found out just how hard it was.
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dickon
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Re: Pi 4 firmware, software stability improvements

Tue Jul 16, 2019 10:50 pm

hardwaremack-orginal wrote:
Tue Jul 16, 2019 9:35 pm
1080p in 4K is still a slide show.
*p30 (or worse *p24) is a slide show. That's just the way it is.

Enable the p60 mode in config.txt and be done with it.

jamesh
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Re: Pi 4 firmware, software stability improvements

Fri Jul 19, 2019 10:24 am

p30 isn't a slide show. It's perfectly fine for most sane people.

Standard frame rate for cinema is 24....

Not to say that >30 isn't better. It is. But 30 is perfectly usable. And saves a LOT of power.
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dickon
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Re: Pi 4 firmware, software stability improvements

Fri Jul 19, 2019 10:59 am

My eyes are a tad weird. To me, less than 50Hz is not smooth; I can look at a source and more or less immediately tell you if it's 24/25, 30, 50, or 60.

And yes, I don't much like cinema for this reason. Ever since TVs have gained the ability to interpolate, I have much preferred watching films at home.

Musketeer
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Re: Pi 4 firmware, software stability improvements

Fri Jul 19, 2019 11:03 am

+ lot of bandwidth! I use 30 fps too for YT on my 10 Mbps net!
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HiassofT
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Re: Pi 4 firmware, software stability improvements

Fri Jul 19, 2019 11:15 am

dickon wrote:
Fri Jul 19, 2019 10:59 am
My eyes are a tad weird. To me, less than 50Hz is not smooth; I can look at a source and more or less immediately tell you if it's 24/25, 30, 50, or 60.
It's not only your eyes. (almost) all people perceive it that way.

For desktop use a simple test is to scroll a document/webpage/... At 60Hz (which is the native rate of most monitors) most people will describe it as smooth, whereas at 30 or 24Hz it becomes a stutter/jump-fest.

so long,

Hias

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