Bought an Nvidia Shield the other day thinking I would utilize it's gaming capabilities. Turns out, I only end up watching purchased movies from Google Play and YouTube. Figured I would downgrade to a Google Chromecast.
My question is, will the quality of my purchased movies from Google be the same? Only reason I ask is because when I cast from my phone to the Shield, my HD purchased movies are noticeably worse. I'm assuming this is because it's my phone playing the content, not the Shield doing the heavy lifting. Does Google Chromecast use the same method?
Not really. It's the same thing as chromecast, the phone sends over a URL and the device plays the content from the URL.
I don't know why the quality is worse, but did you try playing the same movies directly from the apps on your Shield?