Add ffmpeg capture to swaygrab (with limitations)

This needs to be multithreaded to have any sort of realistic expectation
of performance, due to issues with syncronous I/O.

1 files changed, 7 insertions, 0 deletions

diff --git a/swaygrab.1.txt b/swaygrab.1.txt
index 54a1c37a..44152430 100644
--- a/swaygrab.1.txt
+++ b/swaygrab.1.txt
@@ -31,6 +31,13 @@ Options
         Use the specified socket path. Otherwise, swaymsg will ask sway where the
         socket is (which is the value of $SWAYSOCK, then of $I3SOCK).
 
+*-r, --rate* <rate>::
+        Specify a framerate (in frames per second). Used in combination with -c.
+        Default is 30. Must be an integer.
+
+*--raw*::
+        Instead of invoking ImageMagick or ffmpeg, dump raw rgba data to stdout.
+
 Examples
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