Need a feature to disable all partipant's video, and participant can't enable it by themself without permission

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Is your feature request related to a problem? Please describe.
My meeting is open to public(more than 300 people or more), so I can’t control who will join my meeting and which app they’re using to join the meeting. (I think all the participants are using the zoom app download from zoom website.)
As it is open meeting, to ensure smooth running of meetings, I need a feature which can disable the all the videos.

disable video in meeting setting page doesn’t works, because participants can enable it by themselves during the meeting.

Describe the solution you’d like
In meeting setting, we can set whether participants can enable video by themselves, host can enable the video for a participant