"to john's point, i believe that the gstreamer command line examples i left a few comments back use RTP which uses UDP by default since the video stream doesn't require the strict ordering services that TCP provides."

"phil,

i've tried 720 x 1080 and i get very little latency, i.e. super fast, very close to 30 fps and hardware accelerated.
config work courtesy of http://blog.tkjelectronics.dk/author/lauszus/ & matthias bock & vontaene.de for the repo "

"Hi Phil,
this works for me ( gstreamer )
raspberry publish:
gst-launch-1.0 -v tcpclientsrc host= [ raspberry ip ] port=5000 ! gdpdepay ! rtph264depay ! avdec_h264 ! videoconvert ! autovideosink sync=false
raspberrry subscribe: ( os x )…"

"Phil, 
Excellent work. I've download the pre-compiled gstreamer1.0 on my raspberry PI successfully by referring to Matthias Bock's excellent website. 
http://bit.ly/19pbrGl
Then look at lauszus' site for final command line configs…"