Posts by retrorgb

Quote from HiassofT

Setup a whitelist and enable "Adjust refresh rate" - see eg here https://wiki.libreelec.tv/configuration/4k-hdr (it applies to non-4k setups as well).

Also enable "allow double refresh rates" and/or "Allow 3:2 pulldown" if needed - this can help kodi picking the correct resolution if it doesn't have an exact match (but has 2 or 3:2 times the refresh rate).

If kodi can't find any matching resolution/refresh rate it will use the one that you configured for the GUI.

so long,

Hias

Thanks Hias, I'll spend some time this weekend trying to make this work. Both this and the other question you helped with will be part of a pretty fun video I'm working on...so your time here isn't just helping me, it's helping all my fellow CRT/Projector nerds who'll see it. I'll definitely shout you out in the video!

...also, it seems 640x480 @ 24Hz is too low of a clock speed for HDMI hardware to recognize, the same way 320x240@60 is too low. That's why retro gamers need to use something like 1920x240 to send "240p" over HDMI for CRT use. But I have a few ideas for that too - I'll try them all and report back.

Is it possible to configure Kodi / LibreElec via a RPi 4/5 to automatically change its output to whatever matches the file being played? Basically, if the file is 1280x720@60Hz, the output would switch to match when the file is launched, then default back to a basic resolution (480p, 1080p?) when it's done?

I think this could be done manually if I was able to create an EDID for each individual resolution per this thread: [RPi] Adding Custom Refresh Rates

...but it's tricky to make an EDID file for resolutions like 640x480 @ 24Hz created from inverse telecined DVD's, which is a file type more common then you'd expect.

This would be really helpful for going into video processors or displays that have scaling features not available in Kodi, so we can send them the original file with no transcoding done. "Source Direct" players are definitely for video enthusiasts, but they're very hard to find and Kodi already does such an awesome job with tons of different file types.

Yup, the problem was me - All fixed. I attached what I created, in case anyone else wants to try. Here's basic instructions, but I'll have a video soon showing both how to do this, as well as why it's such a big deal for PC CRT monitor and projector users:

- Connect a working LibreElec/Kodi RPi setup to your network
- Go to Settings \ LibreElec \ Services and enable SSH
- Go to Settings \ System Info \ Summary to get your IP address
- Open a command prompt window, then ssh into the Pi via command line by typing: ssh root@ipaddress
- Enter the password
- Type "getedid create" and hit enter. LEAVE THE COMMAND WINDOW OPEN
- Use Filezilla (or your preferred software) to log in via SFTP-SSH
- Back out one directory, then navigate to /storage/.config/firmware/edid
- Delete the edid-HDMI-A-1.bin file (overwrite sometimes has issues, just delete it)
- Copy the unzipped edid-HDMI-A-1.bin file attached to this post to the directory
- Close filezilla
- Go back to the command prompt
- type "create-edid-cpio" and hit enter
- type "reboot" and hit enter

This will set the default resolution to 640x480 @ 60Hz, which basically everything should be compatible with. Then, change some Kodi settings:

- Settings \ Player \ Videos \ Adjust display refresh rate = Always
- Settings \ Player \ Sync Playback to display = Confirm it's OFF
(if you can't see these options, change the settings view in the bottom-left to "expert"

Then back out to:
- Settings \ System \ Display = Select the preferred resolution and refresh rate.

If you ever need to revert the RPi, you can just SSH back in and run "getedid delete"

I still need to test audio and a few other things, but that should be enough to get my fellow CRT nerds up and running!

That definitely worked and I confirmed that Kodi is even sending 24p sources in a proper cadence - Thank you very much!

I'm having an issue creating an EDID that supports multiple resolutions though. I'll keep trying and recruit some friends that have more experience in this, but at the moment, when I switch to a resolution that isn't 640x480, the screen gets cut off and the Pi is still actually outputting 640x480. I assume this is a mistake in my EDID creation, but I wanted to mention it, in case it's a Kodi-specific thing.

I'm looking to add both 640x480 and 1440x1080 resolutions at 72Hz & 96Hz each to my setup, for proper 24p cadence on my display. I tried adding just one resolution at a time in both cmdline.txt and config.txt and I can't see those as an option to whitelist. Can anyone please let me know how to add those as an option?