Currently Being ModeratedDec 11, 2012 11:06 AM (in response to milewis62)
Not when the streaming is controlled from the iMac with the iMac using the AppleTV as a display as the 2011 models are the first to allow that.
Yes if your version of iTunes has home sharing and you set up home sharing on both your iMac iTunes library and your Apple TV. The DVD needs to be one that is in your iTunes library. In this instance the AppleTV initiates the streaming.
I don't believe so if it is an actual DVD. Someone who does know will likely chip in.mid-2010 27" iMac, 16GB DRAM, OS X Mountain Lion, iPad '4'; ATV3; mid 2012 MBA;