Merge commit '4fc2c9280c5262c835a4eb78961241de105313c1' * commit '4fc2c9280c5262c835a4eb78961241de105313c1': Use audio clock as the reference media clock
Merge commit '4fc2c9280c5262c835a4eb78961241de105313c1' * commit '4fc2c9280c5262c835a4eb78961241de105313c1': Use audio clock as the reference media clock