Is there a way not to use a TLS certificate?

Hello.

I would like to use jitsi meet in private network meetings.
However, TLS certificates are mandatory in jitsi.
It takes time and money to get a TLS certificate.

It would be very convenient if you can open jitsi meet only with http instead of https.
Is there any way to realize the system by this way?
We do not need cipher communication.

Akira Watanabe

This is a webrtc limitation, not a jitsi limitation. The API calls in the browsers to access media (camera, microphone) are only available on https. Look into letsencrypt.