I have tried this solution with many variations and it still does not work. My system was working correctly until I added a third camera. My information is below:
Error: Logger: homeassistant.components.stream.stream.camera.living_room_camera
Source: components/stream/init.py:415
Integration: Stream (documentation, issues)
First occurred: 9:37:45 PM (13 occurrences)
Last logged: 9:43:00 PM
Error from stream worker: Error opening stream (INVALIDDATA, Invalid data found when processing input) rtsp://:@10.32.XX.XX:888/videoSub
Foscam cameras:
Newest: Foscam PoE Ultra HD 2K 4MP IP Camera, Outdoor/Indoor Security Video Surveillance Camera,AI Human/Motion Detection & Alert Notification,66ft Night Vision with 30 IR-LEDs,2-Way Audio & IP66 Waterproof
Second installed: FOSCAM Home Security Camera R4S 4MP WiFi IP Camera,Wireless Baby Monitor with AI Human Detection Sound Detection 33ft Night Vision 2 Way Audio Camera Compatible with Alexa Black
Oldest camera: Insteon/Foscam outdoor camera - approximately 10 years old - but still works!