How to keep a pipe open and discard data while the reader is blocked?

I have a camera capture program and video streaming program working together as rpicam-vid ... | go2rtc. My problem is that go2rtc only reads data from the pipe when someone opens the video stream, but I need rpicam-vid to run continuously even when the stream is not up. Is there a way to simply discard data when the reader is not pulling data?