How to default to low definition video quality instead of high definition?

People should still be able to manage video quality and change to standard definition or high definition.

Thanks for any hint!

the Jitsi-meet UI gives control on quality of video with the slider in the config menu. If the other party only send low quality video, you can’t expect to receive high quality though.

Good, but how do I change the default?

No idea, I replied to the question in your post, not the (different) question asked in the title.