av sync issue in stream

[DarthJarJar]

I am trying to rip avatar last airbender animated series but keep getting the error av sync issue in stream 4. What does this mean and is there a way to fix it?

[dcoke22]

For the most part, av sync messages are just informational and can be ignored. They're often the result of MakeMKV joining two audio streams together when a title uses blu-ray seamless branching.