B101 HDMI to CSI-2 bridge (rev 4 with I2S audio) – Auvidea
Amazon.com: Geekworm Raspberry Pi Hdmi-in Module, Hdmi to CSI-2 C779, Hdmi inpute TC358743 Supports up to 1080p25fps Compatible with Raspberry Pi 4B/3B+/3B/Pi Zero/W/2W : Electronics
B100 HDMI to CSI-2 Bridge – Auvidea
HDMI to CSI-2 installation manual - Raspberry Pi Forums