Update README.md

README.md

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 # rpos
 
-Node.js based ONVIF Camera/NVT software that turns a Raspberry Pi, Windows, Linux or Mac computer into an ONVIF Camera and RTSP Server. It implements the key parts of Profile S and Profile T (http://www.onvif.org). It has special support for the Raspberry Pi Camera and Pimoroni Pan-Tilt HAT
+Node.js based ONVIF Camera/NVT software that turns a Raspberry Pi, Windows, Linux or Mac computer into an ONVIF Camera and RTSP Server. It implements the key parts of Profile S and Profile T (http://www.onvif.org). It has special support for the Raspberry Pi Camera and Pimoroni Pan-Tilt HAT.
 
 RPOS won an award in the 2018 ONVIF Open Source Challenge competition.
 
@@ -17,7 +17,7 @@ Oliver Schwaneberg added GStreamer gst-rtsp-server support as third RTSP Server
 
 Casper Meijn added Relative PTZ support
 
-Johnny Wan added limited USB Camera support for GStreamer RTSP server.
+Johnny Wan added some USB Camera support for GStreamer RTSP server.
 
 If I've forgotten to put you in the list, please post an Issue Report and I can add you in.
 
@@ -33,11 +33,14 @@ If I've forgotten to put you in the list, please post an Issue Report and I can
 - Works with other CCTV Viewing Software that implements the ONVIF standard including Antrica Decoder, Avigilon Control Centre, Bosch BVMS, Milestone, ISpy (Opensource), BenSoft SecuritySpy (Mac), IndigoVision Control Centre and Genetec Security Centre (add camera as ONVIF-BASIC mode)
 - Implements ONVIF Authentication
 - Implements Absolute, Relative and Continuous PTZ and controls the Pimononi Raspberry Pi Pan-Tilt HAT
-- Also converts ONVIF PTZ commands into Pelco D and Visca telemetry on a serial port (UART) for other Pan/Tilt platforms
+- Can also use the Waveshare Pan-Tilt HAT with a custom driver for the PWM chip used but be aware the servos in their kit do not fit so we recommend the Pimoroni model
+- Also converts ONVIF PTZ commands into Pelco D and Visca telemetry on a serial port (UART) for other Pan/Tilt platforms (ie a PTZ Proxy or PTZ Protocol Converter)
+- Can reference other RTSP servers, which in turn can pull in the video via RTSP, other ONVIF sources, Desktop Capture, MJPEG allowing RPOS to be a Video Stream Proxy
 - Implements Imaging service Brightness and Focus commands (for Profile T)
 - Implements Relay (digital output) function
 - Supports Unicast (UDP/TDP) and Multicast using mpromonet's RTSP server
 - Supports Unicast (UDP/TCP) RTSP using GStreamer
+- Works as a PTZ Proxy
 - Also runs on Mac, Windows and other Linux machines but you need to supply your own RTSP server. An example to use ffserver on the Mac is included.
 - USB cameras supported via the GStreamer RTSP server with limited parameters available. Tested with JPEG USB HD camera