am 5f423917: Merge "Attempt to derive the avg. bitrate of the entire stream from metadata." into gingerbread

Merge commit '5f42391701c0657d520d00f62a4c061b18ba1280' into gingerbread-plus-aosp

* commit '5f42391701c0657d520d00f62a4c061b18ba1280':
  Attempt to derive the avg. bitrate of the entire stream from metadata.