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by jamesh
Mon Jun 24, 2019 6:07 pm
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 258
Views: 10580

Re: Raspberry Pi 4 Thread - general discussion

One question, which I have a feeling 6by9 is going to hate me for: is it / will it ever be possible to drive the H.265 decoder (with all that that entails, regarding pumping that extra data through the rest of the stack) via OpenMAX? No. The H265 decoder is currently accessed via a modified FFmpeg,...
by jamesh
Mon Jun 24, 2019 6:04 pm
Forum: Raspbian
Topic: Raspbian 'Buster' 2019-06-20
Replies: 53
Views: 1802

Re: Raspbian 'Buster' 2019-06-20 BUG

In the mean time, the desktop pager's "Desktop Pager Settings" menu doesn't seem to do anything either though I expect the two items are related ? (Does the menu start obconf ?) We don't support multiple desktop switching (it was removed in wheezy) so the tools to support it are not guaranteed to w...
by jamesh
Mon Jun 24, 2019 4:51 pm
Forum: Camera board
Topic: Picamera compatibility with new Raspberry Pi 4
Replies: 1
Views: 82

Re: Picamera compatibility with new Raspberry Pi 4

It should all just work.
by jamesh
Mon Jun 24, 2019 3:07 pm
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 258
Views: 10580

Re: Raspberry Pi 4 Thread - general discussion

EMMC really isn't a very good option IMO. Less reliable than SD cards over multiple writes and you cannot replace it when it fails, like you can with an SD card. Mind sharing some info/paper talking about that? Thanks in advance! If this was true then why does the Raspberry Pi Compute module have o...
by jamesh
Mon Jun 24, 2019 3:05 pm
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 258
Views: 10580

Re: Raspberry Pi 4 Thread - general discussion

It would have been nice to have some kind of emmc memory option. Either onboard and an expansion module. I guess that would have been icing on the cake! EMMC really isn't a very good option IMO. Less reliable than SD cards over multiple writes and you cannot replace it when it fails, like you can w...
by jamesh
Mon Jun 24, 2019 2:51 pm
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 258
Views: 10580

Re: Raspberry Pi 4 Thread - general discussion

Does the Pi 4 support VP9 hardware decoding? Also are mpeg2 and VC-1 supported (I have a couple of bluray rips). The MP2 and VC1 HW support is removed, this is now available through software decoding (the ARM's are fast enough). Means you don't need the codec key. At the moment VP9 is all software,...
by jamesh
Mon Jun 24, 2019 2:48 pm
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 258
Views: 10580

Re: Raspberry Pi 4 Thread - general discussion

Hi, I know it's already been said that the video core hasn't changed (only the 3d part) but, as Rodizio asked, I am also interested in knowing if the general increase in clock speeds might mean a decrease to camera video capture latency. Also, could it mean an increase in max video capture fps for ...
by jamesh
Mon Jun 24, 2019 2:47 pm
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 258
Views: 10580

Re: Raspberry Pi 4 Thread - general discussion

It would have been nice to have some kind of emmc memory option. Either onboard and an expansion module. I guess that would have been icing on the cake! EMMC really isn't a very good option IMO. Less reliable than SD cards over multiple writes and you cannot replace it when it fails, like you can w...
by jamesh
Mon Jun 24, 2019 2:07 pm
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 258
Views: 10580

Re: Raspberry Pi 4 Thread - general discussion

DarkPlatinum wrote:
Mon Jun 24, 2019 1:56 pm
The Raspberry Pi Foundation needs a big thank you four this release.

So I would like to thank the Raspberry Pi foundation as well as everyone involved in the making of this magnificent product.
s/Foundation/Trading/

Or in human terms, Trading were responsible for the Pi4, not the Foundation.
by jamesh
Mon Jun 24, 2019 2:04 pm
Forum: General discussion
Topic: Is the new Raspberry Pi 4 capable to play H.264 4K or only to play H.264 1080P?
Replies: 2
Views: 181

Re: Is the new Raspberry Pi 4 capable to play H.264 4K or only to play H.264 1080P?

The H264 decoder is the same as before so limited to 1080p60.

Kodi is currently the only way to play back H265, which in turn is the only HW decoder capable of 4k.
by jamesh
Mon Jun 24, 2019 1:50 pm
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 258
Views: 10580

Re: Raspberry Pi 4 Thread - general discussion

First of all, I would like to congratulate Raspberry Pi Foundation for this latest release of RPI Family, this definitely a good news for people like me whose been struggling with SWAP file due to demanding RAM usage of applications I'm running on my RPI. My question is, when will this board with 4...
by jamesh
Mon Jun 24, 2019 1:46 pm
Forum: General discussion
Topic: The USB-C charger looks very promising, but does it coil whine?
Replies: 2
Views: 164

Re: The USB-C charger looks very promising, but does it coil whine?

Unscientific, but trying a UK spec one my colleague could not hear anything from about 30cm away. But we are in an office, albeit quite a quiet one right now.
by jamesh
Mon Jun 24, 2019 1:25 pm
Forum: General discussion
Topic: SD CARD
Replies: 1
Views: 83

Re: SD CARD

On the Pi3B+ and newer, we have a compliant interface, and I think I remember people testing up to 512GB, but there is no reason why larger will not work.

On the older models, there is a possible limit of 256GB. But will need to check that.
by jamesh
Mon Jun 24, 2019 1:12 pm
Forum: Advanced users
Topic: Does the Raspberry Pi 4 have crypto acceleration
Replies: 1
Views: 199

Re: Does the Raspberry Pi 4 have crypto acceleration

Not as far as I can ascertain.
by jamesh
Mon Jun 24, 2019 1:11 pm
Forum: General discussion
Topic: RPi4 BCM2711 and ARMv8 Crypto Extensions?
Replies: 1
Views: 254

Re: RPi4 BCM2711 and ARMv8 Crypto Extensions?

KarlJo wrote:
Mon Jun 24, 2019 1:05 pm
Are the ARMv8 Crypto Extensions / AES instructions enabled on the RPi4?
Not as far as I can ascertain.
by jamesh
Mon Jun 24, 2019 11:44 am
Forum: Raspbian
Topic: Rpi4 and Stretch
Replies: 2
Views: 255

Re: Rpi4 and Stretch

Buster is required.

Not sure what would happen if you copied the start4* files to a Stretch image - I suspect it would break horribly. There's lots of new mailbox calls in the firmware to support the new stuff, but nothing to drive them.
by jamesh
Mon Jun 24, 2019 11:40 am
Forum: Compute Module
Topic: PI 4 Compute module with pci-e?
Replies: 6
Views: 387

Re: PI 4 Compute module with pci-e?

Wow, that's an idea. Easier to make Pi4 laptop with serious storage? Q1) What else can be down with pci-e? It is not just memory these days that use pci-e. That might need a different form factor, probably worth it? On the Pi4 the PCIe is used to connect the USB hub, and its single channel. Not sur...
by jamesh
Mon Jun 24, 2019 11:25 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 258
Views: 10580

Re: Raspberry Pi 4 Thread - general discussion

Thanks to everyone involved - looks like a great upgrade. I have one query - is there any possibility of driving one 4K 60Hz display at the same time as another 1920x1080 60Hz display? Or would 4K 60Hz prevent any second display output? Thanks. Yes, this is/will be possible. BUT, you will struggle ...
by jamesh
Mon Jun 24, 2019 11:04 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 258
Views: 10580

Re: Raspberry Pi 4 Thread - general discussion

alnaseh wrote:
Mon Jun 24, 2019 10:59 am
great news. any improvement on the camera system. i see it is still supporting the old encoding rates and buses
Camera system is the same.
by jamesh
Mon Jun 24, 2019 10:57 am
Forum: Raspbian
Topic: Raspbian 'Buster' 2019-06-20
Replies: 53
Views: 1802

Re: Raspbian 'Buster' 2019-06-20

Is the Raspbian Buster already "stable" version? :o is there a published migration method from Stretch to Buster? for the RPi3B+ and earlier models, for systems that are "fully loaded" and would be too much of a hassle to start from fresh install or should I wait a little more time until the proced...
by jamesh
Mon Jun 24, 2019 10:55 am
Forum: Raspbian
Topic: Raspbian 'Buster' 2019-06-20
Replies: 53
Views: 1802

Re: Raspbian 'Buster' 2019-06-20

Is there any technical reason why the WiFi/BT radio FW is not kept up-to-date with vendor releases? As far as I read from changelogs there were many bufix/improvements. Just asking... We use the current stable(ish) version of Debian Buster as a source, so that's the versions we get. You could insta...
by jamesh
Mon Jun 24, 2019 10:52 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 258
Views: 10580

Re: Raspberry Pi 4 Thread - general discussion

I saw on a previous comment that VC4 is still there. Is this true? And what's the purpose of it if VC6 is already on-die? Also, a few other questions: 1. Is the audio jack still PWM-driven? 2. The Arasan SD controller has also been replaced or just the Broadcom SDHost one? Parts of the VideoCore4 a...
by jamesh
Mon Jun 24, 2019 10:50 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 258
Views: 10580

Re: Raspberry Pi 4 Thread - general discussion

Can you PLEASE stop these brain dumps. Sorry, just me thinking out aloud, I will add Question numbers and ? marks. Will have to think about whether or not it's going to be worth the aggro! :roll: You could wait for the Pi5 which now will likely also have two micro HDMIs? Really so much agro about a...
by jamesh
Mon Jun 24, 2019 10:45 am
Forum: Teaching and learning resources
Topic: Scratch 3.0 please fix it NOW
Replies: 36
Views: 1085

Re: Scratch 3.0 please fix it NOW

The Raspberry Pi Foundation promotes PiNet so should be monitoring the progress of its development to make sure it meets the requirements of classroom teachers like me! You would need to talk to the Foundation about that - the engineers posting here are employed by Trading. PiNET is not something w...

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