https://vdo.ninja/?push=GUEST_ID&quality=0&stereo&view=HOST_ID&vb=200&ab=16
https://vdo.ninja/?push=HOST_ID&view=GUEST_ID&vb=50&ab=16
https://vdo.ninja/?view=GUEST_ID&vb=12000&ab=128&scale=100
&stereo
from their invite link. Removing it will lower the audio quality, but with it added you will not have echo cancellation enabled.