You can copy streaming videos from any website, including Google cached pages, as long as you use a Web-based application programmed to retrieve the stream and save the video in a playable format.

PlayOn adds Channels DVR integration for recording Netflix and other streaming sources.

Launch YouTube for Android and open the video of your choice. Tap the small arrow button called Share located under the video window. Then, choose how you want to send the URL: via Facebook, Twitter, ...

Google's new stream transfer feature makes it easier to move music and video among compatible connected devices, like Google Home speakers.