am 84665f6d: am 7e397842: Reduce memory usage by the MP4 file writer - Don\'t...

am 84665f6d: am 7e397842: Reduce memory usage by the MP4 file writer - Don\'t store timestamp for each output sample - Don\'t store timestamp for statistical data collection if the collection of statistical data is not requested

Merge commit '84665f6dc2d0b5dfa6a46463677c51f2b670e511'

* commit '84665f6dc2d0b5dfa6a46463677c51f2b670e511':
  Reduce memory usage by the MP4 file writer