I've experienced this a few times on my Chromecasts with GoogleTV.
After using the device for a day or so, the next time I open YouTube or YouTubeTV, the video opens, to a blank screen. If you click Play, the pause icon shows up. Clicking Play again will cause it to play for a second and then it is stuck in a pause loop (For lack of better words). If I hold down the play button it will play, but as soon as you let go, it pauses. The only way I can then get YouTube or YouTubeTV to play again, is to reboot the device.
This is happening on multiple devices pretty regularly. Anyone else experience this or have a fix?
SmartTubeNext m8, who normal use YouTube full of ads on smart TV when you have STN 😉
https://github.com/yuliskov/SmartTubeNext