Ninja PermaID is a simple pattern for teaching Federated Wiki with VDO.Ninja where you keep two fixed stream IDs forever: one for the teacher camera and one for the student screen share - docs.vdo.ninja 
https://vdo.ninja/?permaid=hh_42&webcam&autostart
HEIGHT 190
Simple link embedded with HEIGHT 190. To give permissions to camera and mic open in a new tab
The viewer links can be saved in wiki pages (embedded via Frame Plugin), and the sender links can be saved as browser bookmarks.
# The two fixed streams
TEACHER_CAM is the teacher’s talking-head camera (for example from an ATEM Mini). STUDENT_SCREEN is the student’s screen share - docs.vdo.ninja
Each side embeds the other stream in a wiki panel using a stable view URL.
# Four permanent links
Use one shared password for both streams, and treat the links as invites - docs.vdo.ninja
Teacher publishes camera (bookmark on teacher machine).
- https://vdo.ninja/?permaid=TEACHER_CAM&webcam&autostart&password=PASS
Student embeds teacher camera (Frame plugin in student wiki):
- https://vdo.ninja/?view=TEACHER_CAM&password=PASS&cleanoutput
# Notes
PermaID is stored per device and browser profile. A stream ID can only be pushed by one sender at a time, so close old tabs if you get “already in use” behaviour - docs.vdo.ninja