When you AirPlay something, the sender does not see what is playing on the sending display (the iPad). There is a very limited amount of interaction controlled by the iPad:
-- flip slide
When you attach an iPad directly to an HDTV via The HDMI adapter, you see what is playing on the iPad display, as well as on the HDTV. You have more control -- e.g. in a KeyNote Preso you can see notes and the next slides, etc., which do not appear on the HDTV.
Erica Sadun was experimenting with AirPlay (and wrote some apps for the Mac). According to her, the [then iPad 1] hardware was not robust enough to concurrently display the content on both the Sending iPad and the Receiving ATV or Mac.
It would be great if the iPad 2 could use AirPlay similar to a direct-connected iPad to a HDTV.
One other thing to note: an iPad or iPhone (or a Mac) can initiate an AirPlay connection -- but, the initiating device need not participate in the connection or provide the AirPlayed content.
For example you could have an iTunes server with all your A/V content -- an iPad or iP4 (or Mac) could initiate an iTunes Server AirPlay connection to, say, an ATV, another iPad, etc. Then, the instigator goes on to do other things while the AirPlay receiver sucks content from the AirPlay sender.
– Alan Kay –
– Alan Kay –