No sound when playing Netflix, iPlayer, etc from Safari or Quicktime

If I play a movie in Netflix the sound doesn't work. The volume control can be moved but no sound from the speakers. This with 10.15 beta and Safari. Also there is no sound when playing movies in Quicktime. I am using a Macbook Pro.

Hmm, this is working for me?
Which version of Safari? I _think_ this is the build number:

MacOS > /usr/libexec/PlistBuddy -c "print :CFBundleVersion" /Applications/Safari.app/Contents/Info.plist
15608.2.11.1.8


And the build number of MacOS?

MacOS > system_profiler SPSoftwareDataType
Software:

    System Software Overview:

      System Version: macOS 10.15 (19A573a)
      Kernel Version: Darwin 19.0.0
      Boot Volume: Macintosh HD

I'm on a Macbook Pro as well. Which model do you have?

MacOS > sysctl hw.model
hw.model: MacBookPro15,2

A reboot seems to have fixed it!

No sound when playing Netflix, iPlayer, etc from Safari or Quicktime
 
 
Q