SOLVED: Playback error "This client isn't compatible..."

[Representing_all_cats]

Hello,

I seem to be having trouble playing back some 4K HEVC files via a web client on the local network. The movies will play fine when using a Chrome client on the same machine as the server, but when I try on the network machine I get the following error: Error

"This client isn't compatible with the media and the server isn't sending a compatible media format."

For reference, both machines are Windows based, with the server running Windows 11 and the client running Windows 10. I can play the files with hardware accelerated transcoding on my iPhone with no issue, as well as through VLC on both machines. I've also found that other HEVC files will play fine with the JF web client on the network machine so it's not every single one. I've tried Chrome, Firefox and Edge on the network machine and they all generate the same error.

So far I've tried the following to resolve:

• Signed out and back in with a different, non-admin account
  
• Turned off HEVC encoding
  
• Turn off all hardware acceleration (using Intel's normally, which works GREAT for only having a 12100)
  
• Updated to 10.8.13 server
  

I have a couple of logs of from the unplayable files below.

  JF Log Unplayable 1.txt (Size: 19.6 KB / Downloads: 224)

  JF Log Unplayable 2.txt (Size: 72.79 KB / Downloads: 100)

Thanks for the help!