am 70a957ce: Merge "AVIExtractor: adding a H264 fourCC which is also specified in the reference. (H264 code can be found avi file which is encoded with FFmpeg.)"

* commit '70a957cef141437cdf84e19c2eaeabdfb85c6542':
  AVIExtractor: adding a H264 fourCC which is also specified in the reference. (H264 code can be found avi file which is encoded with FFmpeg.)