switching camera feed in app?

Joined
Mar 23, 2015
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Hey Guys,
I have seen a few people offer different payloads which can show the video through the app, I think its by adding an additional n1 video encoder and plugging your feed into that. I dont think you can keep say x3 and an additional payload camera. But I have seen advertised 2 additional payload cameras that are switchable and viewable on the app. Example is thermal and a small FPV camera. Is there feed switching capabilities in the app and the inspire or are they likely using a third party video switcher before the n1 encoder. (switch analog video before it gets streamed?)

Cheers
 
Anyone have done any custom work with the N1 encoder that can help out?