Merge "MPEG4Extractor: cast media time to int64_t in order to avoid check on unsigned integer overflow." am: ee38fad5e9
am: 4ec776ebf7

* commit '4ec776ebf7cc746dca49c81bce884e534b066f3c':
  MPEG4Extractor: cast media time to int64_t in order to avoid check on unsigned integer overflow.