am e5671bfe: Merge "Audio/video sync during recording (second part)" into gingerbread

Merge commit 'e5671bfe51aeaac823cd94f8e04f01e37b4c2cd6' into gingerbread-plus-aosp

* commit 'e5671bfe51aeaac823cd94f8e04f01e37b4c2cd6':
  Audio/video sync during recording (second part)