Native AirPlay icon not appearing on some videos in Safari

On Safari on my MacBook, sometimes that native airplay icon does not appear on some videos. Is there any way to manually force this? I know the video supports native AirPlay because if I was playing something natively before. The video in question also plays natively, but after some time it only gives the screen mirroring option. Screen mirroring is always available, I’m referring specifically to native AirPlay. Thanks