Airplay problem to LG CX series TV
I have an LG CX series TV with the latest OS which has Airplay 2.
I have a 2019 MBA and 2020 iMac both running Monterey 12.1 and both devices suffer exactly the same problems - which have existed in previous versions of OS. All Apple support instructions have been followed.
I can 'screen mirror' the Macs to the TV although it can be choppy.
My issue is when I try to cast my own videos from Finder using Airplay.
I can play Youtube using the Airplay button from both devices. If I use Elmidia Video Player, the homemade videos play fine (as experienced using the 5 minutes free trial before having to commit to the paid-for version - which I didn't do).
However, I cannot stream the same video files using either the Apple TV app or Quicktime. Apple TV comes up with the error message 'This video is in a format that can’t be streamed to this TV'
whereas Quicktime just hangs (but tells me that the content is playing on the TV). The format must be OK as the Elmedia Player works OK. It is obvious that the TV is receiving the Airplay signal as it goes into the initial Airplay screen - but doesn't progress any further.
Any clue why this isn't working?
MacBook Air