If I try to play videos on my iMac using Safari it won't play, but it plays fine using Chrome. I'm using macOS High Sierra and I'm running Safari version 12.1.
When I try using Safari I get a black screen with a message as shown below.
Can anyone tell me what I need to do to get Safari to play videos?
I don't think I had Silverlight installed but I don't know how to tell. I went ahead and installed version 5.1 of Silverlight but again I can't tell if its installed. When I go to Safari preferences and click on security I get the pane shown below.
Best Answer
You might want to check your Silverlight plugin and confirm that it's installed and working properly. According to their website titled: Prime Video System Requirements for Computers, these are the versions supported:
If you have the correct versions then make sure that the Silverlight plugin is enabled and configured properly in Safari, as shown below.
NOTE: You can navigate to HDD → Library → Internet Plug-ins to verify that Silverlight is installed.
Safari 12 and Amazon Prime
Curiously if I merely navigate to Prime Videos I'm able to play videos without any additional plugins using their built-in HTML5 player.
Additional research turned up this other AD Q&A titled: Silverlight Plug-In in Safari 12 which indicated that Silverlight was no longer supported in Safari 12.
References