Actually you can use the openGL shader for that. There's already a premade old movie effect.
If you haven't already included the shader toolkit in your project then you need to create a new script in the script section of the editor & copy/paste the script from this
page into it.
Quick note: the shader screen fx presets affect the entire screen including interfaces & mouse cursors, so if you want to exclude them from the effect you need to add a line of code to the top of the shader toolkit script.
game.ShaderExclude = eShaderExcludeInterfaces
... that will exclude cursors, fonts & the mouse cursor from the screen fx. Alternatively you can use...
game.ShaderExclude = eShaderExcludeTextsAndCursor
or...
game.ShaderExclude = eShaderExcludeCursor
Moving on... for the noise effect you can use 2 different options. Either way you will need to add the required line of code into a
execute a script action part.
1. shader noise
2. old movie effect
For more information on the shader check out the shader sections available on the
script index page of the wiki.
Quick note: I've not gotten round to documenting all the shader effects yet, but you can probably get the gist of how they work from the ones I have finished documenting.