While video playback should work in Mighty without issue we're still working on full support for web cams. Today, Google Meet is the only app Mighty has built web cam access for. Other apps, like Loom, will be supported for screen recording and mic access; the desktop app is recommended for video access.
We're actively working on full support for web cams and hope to launch this soon. If you urgently need web cam access please reach out to support@mightyapp.com or live chat to let us know.