Multi-camera viewing
RTSP Multiviewer
An RTSP multiviewer, or multiple RTSP stream viewer, shows several IP camera feeds on one screen. SmartRTSP does this with a hardware-accelerated multi-camera grid on iPhone, iPad, and Mac.
Quick answer
Use substream URLs for each camera when building an RTSP multiviewer. Substreams reduce CPU, battery, Wi-Fi load, and disconnects while keeping all cameras visible.
Use substreams
Prefer lower bitrate feeds in multi-camera mode.
Keep cameras local
Local RTSP avoids cloud delay and subscription limits.
Add ONVIF
ONVIF helps discovery and PTZ control.