Mixophilia
Mixophilia (also called mixoscopia) is arousal from watching sexual activity — including watching oneself have sex, or watching others do so with their full knowledge and consent. Recording encounters and using mirrors are common ways to enjoy the self-watching side; consensual group or couple-swapping scenes cover the watching-others side. The key distinction from voyeurism is consent: a mixophile watches openly and with permission, while a voyeur watches people who don't know or agree. It overlaps with exhibitionism, mirror play, and recording. The turn-on is the visual of sex observed.
Seeing sex — your own or a consenting couple's — adds a powerful visual and slightly detached layer that heightens arousal, and being both participant and audience (or an invited watcher) is its own charge. Watching yourself can also boost confidence and connection.
It might mean filming yourselves and watching back, setting up mirrors, or — with everyone's consent — watching a partner with someone else or another couple at a party. The watching is open and welcomed, not secret.
Low physical risk; the essentials are consent and privacy. Everyone being watched must genuinely agree, and any recordings need explicit consent and secure, private storage to prevent leaks. Keep the line clear between this and non-consensual voyeurism.