That is the best and straightforward workaround. Thanks for letting us know that we can rent on Play and watch it on YouTube. I just didn't know that's possible.
If you want to rent the movie or show on Amazon Video but are avoiding using that option just because it doesn't work on chromecast then here is what you can do :
1. Install Amazon video app on phone. Here's link for Android : https://www.amazon.com/gp/video/splash/sd/t/appstore
2. Cast your Android screen (mirror) to chromecast via OS's cast option.
3. Go to Amazon Video app and play show. Do a full screen view.
In addition to this, most smart TVs ( I have an LG from 2013 ) have an Amazon app, so no need to screen cast. I use this to watch directly on TV content from Amazon. Never had any issue with playback, even on slower lines ( now I have fiber, is always HD ).
I have to admit, nice trick with Google Play and Youtube, will check too.
Yes. It's essentially mirroring the phone screen so you've got to focus on watching movie or a show and not worry about playing with the phone notifications. That's a trade-off.
If you want to rent the movie or show on Amazon Video but are avoiding using that option just because it doesn't work on chromecast then here is what you can do : 1. Install Amazon video app on phone. Here's link for Android : https://www.amazon.com/gp/video/splash/sd/t/appstore
2. Cast your Android screen (mirror) to chromecast via OS's cast option.
3. Go to Amazon Video app and play show. Do a full screen view.