Improving Video playback on RPI4 while using Desktop Env.

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jfabernathy
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Improving Video playback on RPI4 while using Desktop Env.

Post by jfabernathy »

I've been experimenting with how to improve video playback. It's not bad, but I keep thinking improvements are possible based on the hardware capabilities of the RPI4.

I got the idea for my changes while testing a combo MythTV FE/BE on EndeavourOS ARM with a KDE/Plasma Desktop Environment. To run Plasma on EOS ARM on a RPI4 you need to use X11 and not Wayland, and you need to turn off Compositor. Also on EOS ARM I could not successfully run from the Console like I could in RPI OS, but it worked fine on top of the Desktop Environment.

So I went back to my RPI OS 64 bit setup as I built using the instructions in my post:
viewtopic.php?f=46&t=4799
Then I used

Code: Select all

sudo raspi-config
to change:
1. Booting back to auto-login Desktop
2, In Advanced, disable Compositor

I think the video quality is at least as good running on top of the desktop as it was running from the console.

I am running the following setting to overclock:

Code: Select all

arm_freq=2000
over_voltage=6
gpu_freq=750
As an aside:
I really like what MythTV looks like on EOS ARM particularly with the Plasma Desktop Environment. I'm not a fan of the RPI OS DE and much prefer Plasma.

If anyone wants to experiment with EOS ARM on a RPI 4 they have a new installer that is very simple not unlike Raspberry PI Imager. Go to https://arm.endeavouros.com/ for help.

If anyone needs help putting MythTV on EOS, I have some scripts that help. LMK in comments.
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jfabernathy
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Posts: 577
Joined: Wed Feb 18, 2015 2:37 pm
Location: Raleigh, NC
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Re: Improving Video playback on RPI4 while using Desktop Env.

Post by jfabernathy »

After some more testing I found that on some horizontal panning in a recording, I get some tearing in the playback when running mythfrontend while in the RPI OS Desktop Environment. I do not get the tearing when running on EndeavourOS ARM Plasma.

Still running no compositor and X11 on both.
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