Inurl+axis+cgi+mjpg+motion+jpeg+better -

This is the wildcard. Why "better"?
In early Axis firmware, developers used comments like <!-- better image quality: set compression=30 --> or rel="better" in HTML anchors. More importantly, security researchers add better to filter results that have been manually tuned for higher resolution or lower compression than factory defaults. A camera running at compression=10 (less compression) is "better" than one at compression=50.

Google aggressively rate-limits automated dorking. Use these instead: inurl+axis+cgi+mjpg+motion+jpeg+better

This is a double entendre. It refers to both motion JPEG streams and the specific motion parameter inside Axis CGI scripts (e.g., resolution=640x480&motion=on). Including motion filters for cameras actively configured to track or detect movement. This is the wildcard