Good question!
So, EDID stands for Extended Display Identification Data. It’s a standardized metadata format that a display (like a monitor, TV, or projector) sends to the video source (like a computer, media player, or in your case, the HDMI receiver). It tells the source what resolutions, refresh rates, color formats, audio capabilities, etc., the display supports. Basically: “Hey, I’m a display, and here’s what I can handle.”
Now, when they say Custom EDID, it means you (or the device) can customize this information manually.
Instead of the receiver or loop-through port only reporting what the attached display can do, you can set a “custom profile” — for example:
- Force a specific resolution (like 4K at 60Hz even if the monitor only reports 30Hz),
- Force HDR on or off,
- Specify preferred color spaces (RGB or YUV),
- Simulate a display (called “EDID emulation”) — super useful for setups like video walls, capture devices, or streaming rigs where you might not have a physical display connected.
In short: Custom EDID lets you control what the source “sees” as the display’s capabilities, which gives you flexibility for compatibility, troubleshooting, or optimizing workflows.
If you want, I can give you a real-world example of when you’d use it! 🚀