I have seen this popup too.
I got it after disabing the heatbeat LED on N2. Thought it was normal.
https://wiki.coreelec.org/coreelec:ce_support
You will get this message one time when you change something in CE DTB settings.
When rebooted it should not come again until you change something else.
I just tried Nexus 20.0 amlogic-ng from a clean install to a SD card on my N2+. When I played back some BD ISOs I noticed some bad aliasing of the image.
When I disable the amlogic hardware decoder, the image is fine again. Am I missing something?
Exactly my toughts
You can do it manually.
Go to Settings - Player - Subtitles. Enter Position on screen. Choose Manual.
Start Video. Enter Settings - Video Settings. Choose Video calibration. Set the short bar down to your choosing. Save calibration. Hit back. Enter Again Video Settings. Choose Set as default for all media.
Or if Video calibration doesn’t work, @Sholander has a solution described here CoreELEC 20.0-Nexus_rc2 Discussion - #66 by Sholander
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thnx for this it helped me a lot
I have a 3D projector. With Avatar 2, 3D is coming back. The problem I mentioned should be easy to fix. Thank you in advance.
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That’s hilarious.
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The funniest prediction for 2023 
Nice one!
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Is there a path to upgrade from 19.5 to 20 without fresh install on Odroid N2+ ?
You can drop that tar file in the update folder. It’s not the recommended path and if you experience any problems you’ll have to try a fresh install. As always, backup your installation and put it somewhere out of the device.
understood. Thanks a lot
I kept my 2014’s 3D Sony TV. It is working fine, but is a shame they are not on sale anymore. Still a ton of 3D material available to enjoy
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A fresh install worked way better for me. Much snappier through menus, etc.
Don’t doubt it. I just don’t want to install the extras again, but if i see problems i know it is the way to go.
Many French people are interested in 3D again since the Avatar 2 experience, and that can be understood, as it was visually incredible. Knowing that there will be other opuses, interest in 3D should grow. For my part, I believe that after the peak brightness war (HDR), it will be the arrival of new 3D HFR technologies. Before or after 8K, I don’t know, but it’s clear that depth is the first thing missing from the image of our home cinemas.
Besides, I don’t see how Cameron can consider not releasing a 3D HFR version of his saga one day or another. Someone was needed to shake up the next video standard, it was him. Perhaps the first UHD 3D film ?
God hope note but your post explains a lot
I totally agree and seriously miss 3D content. I used to love it on my old Samsung TV with active glasses but of course the max resolution was only half of 1080 and this was poor resolution and of course much dimmer screens too. However now those days have passed so come on bring it on and lets have todays high spec fantastic 3D back.
The glasses to me are well worth wearing and not noticable once you are into watching the movie and with the light comfortable polarised glasses system there becomes less dimming effect usually than the active more expensive shutter glasses. I love 3D so lets bring it on with todays fantastic technology. It could be a big boost to the current low demand for new TVs.
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Far better to set your TV to auto best fit the source video being streamed to it from your device. With Samsung is is usually called Best Fit and on LG it is called Just Scan but may vary with models and age. Not sure what it is labelled as on other makes. I know some budget brands do not give you that option then you will have to use the KODI Video calibration settings but you will need it for all the resolutions and frame rates that you will encounter.
Trouoble with the video claibration within KODI is the different sources correctly auto change and match the source video and set right they command over the HDMI link your TV to match teh source resolution AND frame rate for smooth flicker free viewing. So you would have to calibrate for each of several different resolutions and each with several different frame rates. This is 100% by far best fixed with your TV settings and that should also work automatically with other devices you may connect to your TV inputs too.
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