itsRealM12C

List of color formats

#	Format / Space Name	Brief Description	Technical Specs / Details
1	sRGB	Standard RGB space for monitors, web, and print	Gamma ~2.2, D65 white point, IEC 61966-2-1 standard
2	Display P3	Wide gamut space common in modern Apple devices	Gamma 2.2, D65 white point, DCI-P3 primaries
3	Adobe RGB (1998)	Color space optimized for commercial printing	Gamma 2.2, D65 white point, extended green primary

itsRealM12C

Number	Format Name	Description	Specs / Details	Emoji Preview
1	sRGB	Standard Web RGB	Gamut ~2.2, D65 White Point	🟥🟩🟦⚪
2	Adobe RGB (1998)	Wide-Gamut Print	Extended Green/Cyan	🟢🟥🟦⬜
3	ProPhoto RGB	Ultra-Wide Gamut	>90% Visible Spectrum	🟣🟢🔴⚪
4	DCI-P3	Digital Cinema Standard	Wide Red/Green Gamut	🔴🟩🟦🍿
5	Display P3	Consumer Display P3	P3 Gamut + sRGB D65	🍎🔴🟩🟦
6	Rec. 709	HD Television	Matches sRGB Chromaticities	📺🟥🟩🟦
7	Rec. 2020	Ultra HD Television	Monochromatic Laser Primaries	🖥️🔴🟢🔵

itsRealM12C

List of debug query parameters extracted on YouTube TV

Debug Query Parameter	What will happen
?env_forceFullAnimation=1	Forces full UI animation.
?env_isLimitedAnimation=1	Runs UI in limited-animation mode (reduced motion).
?env_isLimitedMemory=1	Tells the app the device has limited memory; triggers memory-saving code paths.

itsRealM12C

Kinda useful and kinda useless gist i've made?

Removing Microsoft Copilot

Maybe it won't work, but modify the appinfo.json of copilot app and change from "removable":false, to "removable":true,, and going to home and uninstall it. Before uninstalling, it requires reboot to take effect and deleting copilot. Might say something like Permission denied or it changes from true to false. Needs root access though. Bind mount might help.

Remove software update alert

You can go to Homebrew Channel, and into the settings, and enable Block system updates, and reboot. This only works if your TV is rooted.

itsRealM12C

Kinda Discovered LG TV Commands

luna-send and luna-send-pub commands can be triggered using Telnet.

You can use webOS Dev Manager app to use the telnet.

Local Control Panel location

local-key menu UI will pop up on bottom center on TV's screen. one-local-key menu located on bottom of the screen. But the energy mode settings, multi audio, aspect ratio, sleep timer, picture mode, sound mode menu will be located on bottom left corner on TV's screen.

itsRealM12C

It will actually be the symbol/icon if the font was LG_Display_Dingbat.ttf.

Settings

• ꖡ = Picture
• ꖢ = Sound
• ꖣ = Network/Connection
• ꖤ = Channels/Programmes
• ꖥ = General (or Admin on EZ Setting)

itsRealM12C

This is just a dump of some interesting undocumented features of webOS (3.8 specifically, on early 2018 4k LG TV) and other development-related tips.

Homebrew app ideas

• OpenVPN frontend (OpenVPN itself is easily buildable and runs on webOS TVs: https://discord.com/channels/407937994037919756/835489130967859251/906943542457401395)
• App autostart manager - dynamically update arbitrary app config and register it as input (see Registering an app as an input)
• webos-vncserver frontend with autostart option
• Package hyperiond into Piccap directly
• Quick Screenshot (expose HTTP port that just returns PNG of current screen contents)
• Custom IR remote codes editor/updater/blaster

itsRealM12C

App ideas:

• Customize Cursors Requries root: yes Customize your cursor to any awesome cursors! If you wondering wheres the cursor image, Just go to /usr/share/im. There is dozens of cursor frames, and some unused cursor parts, like type.

• Custom UI Requries root: yes