screen recorder

record.sh

@@ -0,0 +1,22 @@
+# This script does 60fps screen recording using gstreamer 1.0.
+# The Gnome3 screen recorder is full-screen only.  Other screen recorders
+# are xdamage unaware and drop frames.
+# All the gstreamer examples I could find online were for older
+# versions of gstreamer, so this is pieced together from their docs.
+
+# The stages of the pipeline:
+# - read screen
+# - grab the output at 60fps
+# - use a buffer and a thread
+# - convert video format
+# - encode as vp8
+# - stash vp8 in a webm format
+# - save to a file
+gst-launch-1.0 -e \
+               ximagesrc starty=40 endx=300 endy=240 ! \
+               video/x-raw,framerate=60/1 ! \
+               queue ! \
+               videoconvert ! \
+               vp8enc ! \
+               webmmux ! \
+               filesink location=screen.webm