Posts by Jesper Kjær Pedersen

Piccap can grab all content delivered with HDMI.

Something to consider in your setup is HDR and Dolby Vision, you need expensive grabber/splitter to handle this. Prior to rooting my tv and running piccap, i have tried several cheap splitters with alot of headache. Really unstable. But with piccap there is no issues with HDR/Dolby Vision.

What tv do you have?

Some LG tv can be rooted, and you can install a screen grabber on it alongside hyperion.ng

I have my 77" LG oled rooted and running piccap on it. No need for splitter and grabbers, and it handles HDR and Dolby Vision + 120Hz.

Root info - https://github.com/RootMyTV/RootMyTV.github.io

Screen grabber - https://github.com/TBSniller/piccap

Quote from Puck

In order to get the signal state I use the following sensor:

Code

- platform: scrape
name: denon_signal_hdr
resource: https://{IP_OF_DENON_AVR}:1234/ajax/general/get_config?type=12
verify_ssl: false
select: "Information Video HDMISignalInfo HDR"
scan_interval: 10

The following switch toggles the HyperHDR tone mapping:

Code

- platform: command_line
switches:
hyperion_toggle_hdr:
command_on: 'curl -X POST -i "http://{IP_OF_HYPERHDR}:8090/json-rpc" -d ''{"command":"videomodehdr","HDR":1}'''
command_off: 'curl -X POST -i "http://{IP_OF_HYPERHDR}:8090/json-rpc" -d ''{"command":"videomodehdr","HDR":0}'''
command_state: "curl -k http://{IP_OF_HYPERHDR}:8090/json-rpc -H 'Content-Type: application/json' -d '{\"command\":\"serverinfo\"}'"
value_template: >
{% if value_json.info.videomodehdr == 1 %}
{{ true }}
{% else %}
{{ false }}
{% endif %}

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The following automation toggles the HyperHDR tone mapping based on the Denon AVR state:

Code

# HDR off: ' --- -> --- '
# HDR on: 'HDR10 -> HDR10'
- id: ambilight_toggle_tone_mapping
alias: Ambilight - Toggle tone-mapping based on HDR/SDR input signal
trigger:
- platform: state
entity_id: sensor.denon_signal_hdr
action:
service_template: >
{% if is_state('sensor.denon_signal_hdr', 'HDR10 -> HDR10') %}
switch.turn_on
{% else %}
switch.turn_off
{% endif %}
entity_id: switch.hyperion_toggle_hdr

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Sorry that indentation is lost due to copy-paste.

Great, Thank you!!
Will try this out later

Quote from Puck

Automatically toggling tone-mapping based on if my Denon Receiver outputs HDR or SDR is done! Home-Assistant is great for these kind of automations.Thanks for adding this API feature @Awawa! Makes my life a bit easier

Hey Puck,
I can see that we have similar setups. Same Avr and both running Homeassistant. Could you share how you configured Homeassistant?

Quote from peskdale

Yes - this will accept and passthrough HDR signals fine. My issues were just bad cabling in my setup.

The grabbed image is not tone-mapped, so will be washed out (which is normal for almost all affordable grabbers).

What I can’t advise on is how this will behave without a display connected to it’s output. Mine is connected between my amplifier and TV.

Great! Thank you peskdale

Quote from peskdale

I bought one of these https://www.amazon.co.uk/gp/product/B08C9Z5BD2?tag=hyperioforum-21 the other day. Good news is that it does accept and onpass a 2160p60 HDR signal, whilst grabbing at 1080p. And Hyperion on my Pi 3 picked it up straight away.

Latency is good with automatic settings, although I have turned down the resolution just to be safe.

Unfortunately, it looks like when you go full-on at 2160p60 HDR, the power draw can be slightly too much for a Pi 3 to keep up with. Occasionally, this will result in the HDMI loop dropping out for a moment (exasperated by my TV then taking an age to lock back onto the signal).

I tried plugging it into a 5V/2.4A USB hub, and experienced the same issue. However, when connected to my USB3 laptop, no such issues occur. I'm hoping that a proper USB3 hub, or a Y-splitter, can solve this. Suggestions welcome.... bought this to keep the clutter down, so doesn't really want another box just to power it properly.

EDIT: This was down to a bad HDMI cable causing my AVR to occasionally drop out. Coincidentally started happening after I installed the grabber. 2160p60 HDR is stable on a Pi 3 without any additional power.

Interestingly, my PS4 couldn't make much sense of it to begin with. Seemed to believe it wasn't capable of YUV420, but was able to do RGB and YUV422 HDR fine. Kept changing mode until I set a manual resolution.

In short, this is a great capture device, and can be paired directly with a Pi 3 so long as you aren't after the full 2160p60 HDR.

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Just to be absolutely sure before I order another hdmi grabber. Can this garbber receive HDR signal?
My amplifier has 2 hdmi out ports which defaults to the worst signal = no HDR on any of the outputs if the grabber is not compatible with HDR.