Interface changes too often for no reason, please keep more backwards compatibility.

[nirdeepdub]

IMPORTANT: Be sure to replace all template sections {{ like this }} or your issue may be discarded.

Desired Behavior

{{ A description of how you think PyAV should behave. }}
I don't see why changing Flags.FAST_SEEK should change to Flags.fast_seek.value what is the advantage here ? Is there a real reason to change this interface!?

Additional context

Breaking changes.
{{ Add any other context about the problem here. }}