Michal Kottman mkottman

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

	-----------------
	-- Microlight - a very compact Lua utilities module
	--
	-- Steve Donovan, 2012; License MIT
	-- @module ml

	local ml = {}

	--- String utilties.
	-- @section string

	-- A priority queue that sorts based on euclidean distance

	pq = pqueue(function(point1, point2)
	return (point1[1]-point2[1])^2 + (point1[2]-point2[2])^2
	end)

	for i=1, 20 do
	pq:push{math.random(100), math.random(100)}
	end

	-- makes interactive prompt dodgy.
	-- (In an ideal world, should be able to switch this off only for
	-- the message buffer)
	_m.textadept.editing.AUTOPAIR = false

	-- useful function which can safely handle argument lists containing nil;
	-- the resulting table has n set to the real length.
	local function pack (...)
	local args = {...}
	args.n = select('#',...)