But the reason your videos won't play is YouTube knows your user agent and such. They know you are using a Roku and knows where you are. They can block you in any country. Use a VPN and see if it works. There ya go. Advice for free. Make sure not to login if that is how they are block you.

Mar 20, 2020 7 Methods to Solve "Facebook Videos Not Playing" Issue Refresh or Reopen the Browser. Many times, Facebook videos won't play may be caused by the … How to Fix Embedded Videos Not Playing in Google Chrome Jul 15, 2019

Fix DashCam Videos that Won't Play

Nov 08, 2019

Apr 19, 2018 · restarting Windows and then try to play videos. If it still fails, follow these steps to verify that Windows Video Compression is installed properly: Removing and Reinstalling Video Compression. Click the Start button, point to Settings, and then click Control Panel. Double-click Add/Remove Programs. Click the Windows Setup tab.

Feb 07, 2020 Videos or Music won't play - HP Support Community - 5906425 Dec 24, 2016 Embedded video won't play in Canvas? - Browser Security Apr 21, 2020