Added more settings to frame_updater and made it react to 16:9 ratio with showing/hiding frame source. Added JSON parser and an example on how to use it.

obs_source_set_settings_fix.lua

@@ -0,0 +1,45 @@
+--[[
+
+    Issue: 
+        One can't iterate over a source properties in Lua
+
+    Why it happens:
+		-- obs.obs_get_source_properties always returns nill 
+		-- obs.obs_source_get_settings can't be iterated over
+        -- obs_properties_first can be used, but obs_properties_next expects a pointer while Lua bindings operate with objects
+        -- OBS devs ignored issues aimed to fix this for several years
+        
+    Solution accepted by the OBS devs: 
+        Use FFI to create a second wrapper for something that an already embedded LUa bindings should give access to.
+
+    My solution:
+        Use json-lua by tiye (https://github.com/tiye/json-lua/tree/main) to make JSON dataiteratable
+    
+    How to use:
+        - add these lines to any of your scripts to be able to iterate over source properties through lua
+        - work with native Lua tables using 2 new methods
+
+
+]]
+
+-- load JSON
+json = require("deps.JSON")
+
+-- helper to get the settings of a source
+obs.obs_source_get_settings_json = function (source)	
+	local properties = obs.obs_source_get_settings(source)
+	local json_encoded = obs.obs_data_get_json(properties)
+	local data = json:decode(json_encoded)
+	return data
+end
+
+-- helper to set the settings of a source
+obs.obs_source_set_settings_json = function (source, json_properties)	
+	local properties =  obs.obs_source_get_settings(source)
+	for key, value in pairs(json_properties) do
+		obs.obs_data_set_string(properties, key, value)
+	end
+	obs.obs_source_update(slave_source, slave_props)
+end
+
+