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by noggin
Thu Dec 17, 2020 11:11 am
Forum: Media centres
Topic: TV Headend not recognising pi tv hat
Replies: 2
Views: 443

Re: TV Headend not recognising pi tv hat

If you've installed OpenElec - that's an ancient distribution now, which hasn't been supported for many years.

I'd install LibreElec - which is the fork of OpenElec that has continued to be developed.
by noggin
Wed Dec 16, 2020 3:05 am
Forum: Advanced users
Topic: Triple display with Raspberry Pi 4
Replies: 25
Views: 10734

Re: Triple display with Raspberry Pi 4

My quick reading of this thread suggests that it is also possible to do a triple display with 2 x HDMI and a GPIO-connected MIPI DPI display or a VGA-connected GertVGA-style display too? (Or is the DSI0 + DPI sharing not what I think?)

Is there a device tree combo for that triple display set-up?
by noggin
Tue Jul 14, 2020 8:42 am
Forum: HATs and other add-ons
Topic: TV Hat SPI bandwidth
Replies: 3
Views: 469

Re: TV Hat SPI bandwidth

Brilliant - that seems, at least initially, to have done the trick. When I record all 5 HD services on PSB3 now I get no instant continuity errors. Previously I'd get hundreds very quickly! **EDIT - spoke to soon - still get hundreds of errors pretty quickly... Will have a think about what to do nex...
by noggin
Mon Jul 13, 2020 10:19 am
Forum: HATs and other add-ons
Topic: TV Hat SPI bandwidth
Replies: 3
Views: 469

Re: TV Hat SPI bandwidth

Thanks for this. Streaming a mix is very low in CPU load terms, so I’ll give those a go.
by noggin
Mon Jul 13, 2020 8:59 am
Forum: HATs and other add-ons
Topic: TV Hat SPI bandwidth
Replies: 3
Views: 469

TV Hat SPI bandwidth

Hi all Can anyone clarify what the max SPI bandwidth a TV Hat can be run at is please? I've recently been trying to multicast the whole of PSB3 (40.25Mbs UK HD BBC One/Two/CBBC/ITV/C4/C5 HD multiplex) and whilst you can stream a couple of services - if you stream the whole mux you get a lot of conti...
by noggin
Thu Jun 25, 2020 1:16 pm
Forum: Graphics, sound and multimedia
Topic: Pi 4B HEVC decode capabilities
Replies: 0
Views: 289

Pi 4B HEVC decode capabilities

Apologies if this is posted elsewhere in the forum, but a couple of searches didn't bring up anything, I'm sure I've read in a couple of places that the Pi 4B has a 4096x4096 4:4:4 capable HEVC decode engine - and that is referred to here https://cdn.shopify.com/s/files/1/1560/1473/files/Inside_Rasp...
by noggin
Sun Apr 26, 2020 10:05 am
Forum: Troubleshooting
Topic: 4K flickering
Replies: 5
Views: 1850

Re: 4K flickering

This issue only occurs during 4K playback. The screen is flickering on off rapidly. Have raspberry pi4b TV is 4k Hdmi is 4k capable Is there an issue with (some) 4k codecs or do I need to configure something? Is your Pi 4B switching to 4K when it plays back 4K video, or is it in 4K for the GUI too?...
by noggin
Wed Nov 20, 2019 9:29 am
Forum: General discussion
Topic: Raspberry Pi4 to measure HDMI input lag
Replies: 17
Views: 3300

Re: Raspberry Pi4 to measure HDMI input lag

This is the question that I've never fully investigated with HDMI and displays. It's a serial link, so there's a temporal difference between when the first and last pixel are presented over the link. Do displays work in the same way as rolling shutter cameras and update as they are fed the data, or...
by noggin
Thu Jul 25, 2019 10:23 am
Forum: General discussion
Topic: CHEAP 6+ inch screen
Replies: 5
Views: 662

Re: CHEAP 6+ inch screen

Yep - you're in the realm of cheap composite car reversing monitor displays at that price point and screen size. https://www.amazon.co.uk/Digital-Monitor-Parking-Support-Definition/dp/B01FRXMI4K/ref=sr_1_4?keywords=reversing+monitor&qid=1564050318&s=gateway&sr=8-4 is an example from UK A...
by noggin
Wed Jul 24, 2019 2:41 pm
Forum: General discussion
Topic: RPi 4: 4K60 Video Playback Help
Replies: 27
Views: 15675

Re: RPi 4: 4K60 Video Playback Help

To precis - on the Pi4B 4K h.264/AVC video has no hardware acceleration and is unlikely to play with software decoding 4K h.265/HEVC video has hardware decoding - but only currently within LibreElec 4K30 and below modes are enabled by default when connected to a monitor that supports 4K30 and below ...
by noggin
Wed Jul 17, 2019 9:28 am
Forum: Media centres
Topic: Pi4 - HDMI Audio support?
Replies: 13
Views: 17818

Re: Pi4 - HDMI Audio support?

The Pi Zero->3B+ range all support 5.1 and 7.1 PCM output up to 96kHz and 4.0 PCM output up to 192kHz. Dolby True HD and DTS HD MA can be losslessly decoded to these formats (apart from 5.1 PCM 192kHz which will need to be downsampled) - effectively you decode in the Pi, rather than your AVR. This i...
by noggin
Mon Jul 15, 2019 9:38 am
Forum: General discussion
Topic: I didn't think the usb c power thing was a big deal...
Replies: 92
Views: 11261

Re: I didn't think the usb c power thing was a big deal...

...screen apparently will only do 4k@30hz through the HDMI cable... Why the hell should one want to get more than 30Hz on an LCD screen? LCDs don't flicker by design. We are here in a RasPi, not on a gaming freaks forum. Err - to watch 2160p50 and 2160p60 video ? (The Pi has been a popular video pl...
by noggin
Mon Jul 15, 2019 9:36 am
Forum: General discussion
Topic: New rpi4 issues with 4k
Replies: 12
Views: 3290

Re: New rpi4 issues with 4k

Ok, I have it sorted for now, it works fine with XRDP from a windows machine, and Remote Desktop...But not sure how I can run from my Linux laptop... If it works OK with 4K on some VNC clients and not others, then it suggests that not all of your clients handle 4K? (Or do those clients work OK in 4...
by noggin
Sat Jul 13, 2019 4:55 pm
Forum: HATs and other add-ons
Topic: Pi4 - more SPI - more TV Hats?
Replies: 2
Views: 751

Re: Pi4 - more SPI - more TV Hats?

Thanks - presumably the drivers would need to be updated too and some manual configuration somehow to point to the right SPI buses in the absence of a HAT EEPROM for the 'second' TV Hat?
by noggin
Fri Jul 12, 2019 1:54 pm
Forum: HATs and other add-ons
Topic: Pi4 - more SPI - more TV Hats?
Replies: 2
Views: 751

Pi4 - more SPI - more TV Hats?

Theoretically - would it be possible to fit more than one TV Hat to a Pi 4B (as it has more SPI buses) with a suitable adaptor - to allow for dual tuner working?
by noggin
Thu Jul 11, 2019 5:11 pm
Forum: General discussion
Topic: No output from RCA video
Replies: 6
Views: 914

Re: No output from RCA video

Interesting - the Pi4B is outputting 31kHz "PAL" with burst in some situations (a totally non-existent analogue standard!) This is twice the normal line rate of 15.625kHz (as if the Pi is outputting progressive 576p50 rather than interlaced 576i25?) https://twitter.com/IsItBroke/status/114...
by noggin
Fri Jul 05, 2019 10:33 pm
Forum: General discussion
Topic: No output from RCA video
Replies: 6
Views: 914

Re: No output from RCA video

Have you tried switching back to the legacy video driver - I think you can do that in raspi-config advanced settings? Someone else may be able to advise better.

I think the Pi4B defaults to the new Open Source V3D drivers?
by noggin
Sat Jun 29, 2019 10:33 am
Forum: General discussion
Topic: (pi4) so how fast is 'entry level pc performance'
Replies: 48
Views: 28455

Re: (pi4) so how fast is 'entry level pc performance'

Hellos, I have seen a couple of people throwing around the pi4 is "entry level pc performance" personally I would say (and google said too) the current sub $100 intel i3 and ryzen 3 are 'entry level' but slower things like quad core atom cpus exist so wondering what exactly is entry level...
by noggin
Sat Jun 29, 2019 10:27 am
Forum: General discussion
Topic: (pi4) so how fast is 'entry level pc performance'
Replies: 48
Views: 28455

Re: (pi4) so how fast is 'entry level pc performance'

don't know if Windows 32 bit is even around anymore Yes, a touch tablet with 32 bit Windows 10 ( Processor: Intel Bay Trail-T Quad Core Z3735F 1.83GHz processor. Operating System: Windows 10-1903. Memory: 1GB LPDDR3. Display: 8-inch 16:10 IPS HD (1280 x 800) with 5 point multi-touchscreen. Graphics...
by noggin
Sat Jun 29, 2019 10:13 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 947
Views: 223839

Re: Raspberry Pi 4 Thread - general discussion

Can anyone tell me if the Pi 4 supports DTS-MA & Dolby True HD? Not yet - but the issue that stopped it being possible on previous Pis has been removed. The Pi 3B+ and below all maxed out at 4.0 192kHz PCM over HDMI, with 5.1/7.1 PCM only supported at lower sampling rates. To carry DTS HD MA or...
by noggin
Fri Jun 28, 2019 11:58 pm
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 947
Views: 223839

Re: Raspberry Pi 4 Thread - general discussion

The HDMI hardware does not support YCbCr420. So for 4Kp60 deep colour YCbCr422 is the only option Just reading through all these posts earlier about HDMI and YCbCr420. Does all this mean my SDR 4K TV won't work with the Pi 4 at 4K60? This is what NVIDIA Control Panel shows for it. https://i.imgur.c...
by noggin
Fri Jun 28, 2019 11:55 pm
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 947
Views: 223839

Re: Raspberry Pi 4 Thread - general discussion

The HDMI hardware does not support YCbCr420. So for 4Kp60 deep colour YCbCr422 is the only option Yes - so currently RGB 8-bit 2160p60 is output, but for 10-bit or higher bit depth (really required for HDR) your only option is YCbCr 4:2:2 (which is 12-bit only according to HDMI 2.0 specs - though 1...
by noggin
Fri Jun 28, 2019 11:46 pm
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 947
Views: 223839

Re: Raspberry Pi 4 Thread - general discussion

The big question I would think with such monitors is whether the monitor supports it's full resoloution over HDMI or not. IIRC HDMI was only recently upgraded to support high-res (> 1600x1200) monitors, so older monitors may only support their full resoloution on displayport or dual-link DVI. Worry...
by noggin
Thu Jun 27, 2019 10:43 am
Forum: General discussion
Topic: Reasoning behind dual Micro HDMI, and potential future alternatives?
Replies: 125
Views: 18628

Re: Reasoning behind dual Micro HDMI, and potential future alternatives?

There's no facility in the SoC for display over USB, so that is a non-starter. With regards to dual height connectors, they would apply too much torque to the attachment point The micro-HDMI are the right size, are robust (I've been plugging in and out for months with no problems), cheap, and we no...
by noggin
Wed Jun 26, 2019 5:11 pm
Forum: General discussion
Topic: Reasoning behind dual Micro HDMI, and potential future alternatives?
Replies: 125
Views: 18628

Re: Reasoning behind dual Micro HDMI, and potential future alternatives?

I'm not getting the hate for Micro HDMI. I have 4 devices that use it : 2 x Cheap Windows Atom tablets - both have Micro HDMI for external displays. 1 x ODroid C1 which has a Micro HDMI 1 x Motorola Lapdock that uses Micro HDMI for video input (they are used with a LOT of Raspberry Pis) Converters a...

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