+1 to what
@Flintstone61 and
@justabeginner said about the
Amcrest IP2M-841, a re-branded Dahua. It is ONVIF compatible, provides RTSP, is 1080p (Full HD), IR, 2-way audio, has pan/tilt/digital zoom, record to micro SD card, wired or wireless,, great with
Blue Iris, VLC, etc. Comes with wall/ceiling mount, 1/4"-20 tripod mount female insert on bottom. Available in black or white for under $45, silver is more.
As far as browsers, it works with Pale Moon (32bit), SeaMonkey, IE, Safari 11, Firefox 49.0 and Chrome (recommend with latest version camera and it requires no extension).
I've installed 4 of the V2 versions, 1 of the latest V3 version and 3 of it's lower-res HD (720p) cousins in the last 4 years and all have functioned with no hiccups.
I currently use 3 of them with Blue Iris; 1 on front porch to look at deliveries, 1 in garage and 1 in sunroom to watch the dogs; two of the 3 is operating on Wi-Fi via a dedicated AP. I have also set one up with Tinycam Pro on a Sony smart TV (Android).
VERY hard to beat for $45, IMO