r/opensource • u/pi_nerd • 6h ago
Promotional I built Snapback: a Raspberry Pi instant replay box that saves the last 30 seconds of HDMI video from your phone
Hey everyone! I’ve been working on Snapback, a DIY instant replay project built around a Raspberry Pi 5.
It keeps a rolling buffer of video and audio from an HDMI capture device. When something happens that you wish you’d recorded, grab your phone and save the last 30 seconds, or take a screenshot.
Everything runs locally on your network, with no cloud service or account required. I built it with gaming in mind, but it can also work with compatible HDMI cameras and computer output.
I’m sharing it now because I’d love feedback from people who enjoy building things like this. Curious what you’d use it for, what hardware you’d try, and what could make setup easier.
Thanks for taking a look!
I’d love feedback, ideas, or contributions. If nothing else, a star on GitHub would mean a lot and help others find the project. Thanks for taking a look!