Hello @gravity_gunner, Actually, to be able to support the Enhance Dialogue you have to use the .moviePlayback as a mode of the AVAudioSession.

Hi @zkyki, We recently got the same problem. In our case, this revealed an issue with the subtitles themselves. One of the VTT segments namely contained an entry with zero length (identical start and end times), leading to playback failing. Fixing this issue made the content play fine again.

Hello @rdailey98-hbo, Could you please provide us the stream that you are using? Thanks in advance!

I've the same issue as well ! Any idea to solve this problem ?