Firefox "Browser blocked video playback"

[baj1]

I have v5.0.1 installed on a test system running on Mint Mate v19.3 x64.  I have to say you guys did an incredible job making this easy to setup!!!

After installing I launched Firefox and logged in.  I was surprised that NextPVR had automatically found my HDHR tuners on Ethernet (cool!), I plugged in my Schedules Direct info, scanned for channels, did an EPG update and BOOM!  It looks pretty functional.

However, when I tried to test-watch a show from the EPG Guide, it queues for a few seconds with an increasing number (bytes?), then replaces that with red text "Browser blocked video playback" at the bottom of the playback window, which remains black but the timeline progress continues to count up. 

The default browser in Mint v19.3 is Firefox (v71.0).

I installed Chromium, connected to the server, playback works fine there, so seems like a FF setting.  Any ideas?

Logs attached (if that helps).

Thanks!
-Brad

[mvallevand]

The default is to block in Firefox. There should be an icon on the URL bar to unblock. Google will help you on unblocked video too.

Martin

[baj1]

Sorry, should have looked closer. I whipped through the Preferences and missed it. Found it on second look - "Privacy & Security" - "Autoplay" and set Default to "Allow Audio and Video".