Update video streaming scripts (#116)

* Tweak video scripts

Author: Terkwood

services/video/README.md

@@ -0,0 +1,7 @@
+# video stuff
+
+We sometimes like to watch our prawns from another place
+
+## Resources
+
+- [Sanity check](https://www.linux.org/threads/how-to-test-open-udp-ports.18105/)

services/video/recv_ximage.sh services/video/recv_udp_local.shservices/video/recv_ximage.sh renamed to services/video/recv_udp_local.sh

@@ -1,2 +1,3 @@
 #!/bin/bash
-gst-launch-1.0 udpsrc port=5001 ! application/x-rtp,encoding-name=JPEG,payload=26 ! rtpjpegdepay ! jpegdec ! videoconvert ! ximagesink
+
+gst-launch-1.0 udpsrc port=5001 ! application/x-rtp,encoding-name=JPEG,payload=26 ! rtpjpegdepay ! jpegdec ! videoconvert ! autovideosink

services/video/send_stream_udp_local.sh services/video/send_udp_local.shservices/video/send_stream_udp_local.sh renamed to services/video/send_udp_local.sh

@@ -1,5 +1,6 @@
 #!/bin/bash
 
-TARGET_IP=192.168.1.1
-
-gst-launch-1.0 -v rpicamsrc  ! videoconvert ! videoscale ! video/x-raw,format=I420,width=640,height=480,framerate=20/1 ! jpegenc ! rtpjpegpay ! udpsink host=$TARGET_IP port=5001
+T=${TARGET_IP:="192.168.1.1"}
+P=5001
+echo "Sending to $T:$P"
+gst-launch-1.0 -v rpicamsrc  ! videoconvert ! videoscale ! video/x-raw,format=I420,width=640,height=480,framerate=20/1 ! jpegenc ! rtpjpegpay ! udpsink host=${T} port=${P}