LE's GUI is coded in EGL, so in theory we could switch to Vulkan and get a faster GUI. In practice we need a Vulkan expert, who can adapt from EGL to Vulkan, and of course he / she has to do all the work for free - not very likely.
Posts by Da Flex
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You talk about HDMI 5.1 audio. This doesn't exist, but now I have the idea that you eventually use an HDMI audio extractor with an 5.1 / 2.1 channel switch. Am I correct? A user at this thread currently has trouble with such an extractor.
If yes, then your described sound expansion board could work.
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Always use the search function first. Click!
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Sounds like a plan. Don't forget that HDMI will speed up data rate when connected to a 4K display. Make sure your HDMI cables can handle it. HDMI 2.0 and 2.1 standard cables are ready for that 4K data rate.
Your extractor has that little 5.1 / 2.1 channel switch - always test both modes.
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If there is no add-on, you could use a Docker implementation ("nolte" for instance).
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Ziggyzhang Don't post your logs as plain text, because it will make this thread hard to read. Use quoting / code formatation for short log snippets, and services like PasteBin for longer logs. Thanks!
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Thanks for testing. Next approach: Convert to MKV (by using mkvtoolnix for instance).
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...but for some reason it fails with my Samsung TV set: the HDMI signal is not detected properly. As it could be due to "plug&play" aspects of my "smart" TV, I'm looking for other solutions.
I don't think so. If it works without the extractor, it has to work with the extractor, too. That's just a pass-through function. If you still have guarantee, order a replacement.
The USB audio can fail on higher data rate (HD audio formats). So, the extractor solution should be preferred.
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I move it to our Hardware sub-forum, because that's the place where people already discuss similar questions.
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...so the memory concern is only valid for AI and deep learning users.
No, because AI folks can run it headless, and use the GPU for AI picture detection only.
If you want to run LE at 91MB RAM, good luck!
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I'm not a 4K user, but I can give some hints anyway. First read this thread, if you don't want an RPi 4B. I don't suggest the Jetson Nano. If you scroll down that article, you'll see that only 91MB memory are left with graphical display attached. That's terrible.
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My RPi is pretty basic, just a power button and status LED. When I find a cool project at the forum, I move it to Showcase.
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Please describe the media formats you use (codec, file format, streaming provider). We're still stepping in the dark here.
PS: Codec Info
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Time to try my approach. You're fixed on NTP too much. If you just send the RPi time to Arduino as a loop, it will be more stable in case of network / NTP errors.