The following information came from Jason at www.z09.net
and from – Ventz (https://blog.vpetkov.net)
Chromium sucks for streaming on the Raspberry Pi Pixel Desktop. One of my gripes was Youtube TV, ‘format not supported.’ Chromium Media Edition is much better. Ventz Petkov has a sweet install script. Here’s the tl;dr version.
curl -fsSL https://pi.vpetkov.net -o ventz-media-pi sh ventz-media-pi