add some information about websocat and v4l2loopback

diff --git a/stream2beamer.md b/stream2beamer.md
index 41e74abcea65520fb51bea67390261aa8eecea45..712396db75fb25c3d4d4954dd4f19fa92ca84f6e 100644 (file)
--- a/stream2beamer.md
+++ b/stream2beamer.md
@@ -29,12 +29,6 @@ The examples at https://github.com/centricular/gstwebrtc-demos.git work once
 
 has been set (see https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/issues/811)
 
-## websockets
-
-connecting to websockets (plus gstreamer and v4l2sink)
-
-https://michael.stapelberg.ch/posts/2020-06-06-iphone-camera-linux-v4l2loopback/
-
 ## gstreamer examples
     gst-launch-1.0 -v playbin uri=file:///home/philipp/tmp/GerisGame.mp4
     
@@ -58,6 +52,26 @@ https://michael.stapelberg.ch/posts/2020-06-06-iphone-camera-linux-v4l2loopback/
 * https://github.com/xfxf/video-scripts/blob/master/michael/youtube-live.sh
   (and others in the same repo)
     
+## websockets
+
+connecting to websockets (plus gstreamer and v4l2sink)
+
+https://michael.stapelberg.ch/posts/2020-06-06-iphone-camera-linux-v4l2loopback/
+
+       # send
+       laplace / chromium
+
+       # receive
+       websocat --insecure "wss://localhost:8080/ws_connect?id=cranky_kind_chipmunk"
+
+## more v4l2loopback/v4l2sink
+
+       # send
+       gst-launch-1.0 videotestsrc ! v4l2sink device=/dev/video42
+
+       # receive
+       cvlc v4l2:///dev/video42
+
 # VLC
 Note that you have to close VLC and open it again for new streaming as VLC leaves the connections
 open (I spent hours figuring out why http based streaming doesn't work - `netstat -4 --ip` is nice