Inserting preroll ads

I was studying the “PlayContentWithAds” method and I discovered this

adIface = Roku_Ads()

 print "Roku_Ads library version: " + adIface.getLibVersion()

 
http://video.ted.com/talks/podcast/DavidKelley_2002_480.mp4

 'adIface.setAdUrl() 

Will Preroll works like this?

adIface = Roku_Ads()

 print "Roku_Ads library version: " + adIface.getLibVersion()

 

 'adIface.setAdUrl() 

Or this?

adIface = Roku_Ads()

 print "Roku_Ads library version: " + adIface.getLibVersion()

 
 ' lengthy (20+ min.) TED talk to allow time for testing multiple ad pods

 videoContent = { streamFormat : "mp4" }

 videoContent.stream = { url: "http://video.ted.com/talks/podcast/DavidKelley_2002_480.mp4",

 bitrate: 800,

 quality: false

 }

 'adIface.setAdUrl() 

 adPods = adIface.getAds()

 playContent = adIface.showAds(adPods) ' show preroll ad pod (if any)