86ae7ebac4
To check what is safely possible we keep track of the live offset corresponding to the buffered duration and only deecrease the target offset to a safe margin from the buffered duration. Also, while still possible (i.e. while the actual offset is larger than the safe margin), we increase the target offset to the safe margin to avoid rebuffers to start with. Issue: #4904 PiperOrigin-RevId: 341396492