Hi,
Thanks for the great info!
First thing what we suggest is to disable the airplane mode. From the video you are using Wifi for connection and with AM you can have problem.
It would also help us to get the full diag of your browser from
secure://settings/help -> Diagnostic InformationPlease may I ask you to follow few more steps so we have detailed information about the specific video:
1. Open video
2. open secure://media-internals/ in the another tab
3. select recently opened video in the Recent Players
4. Click on 'copy to clipboard'