Merge "DO NOT MERGE: MPEG4Extractor: ensure returned status is checked." into mnc-dev am: 80059d44c4 am: 72840f2216 am: 9e9987c46d am: 9583ca702a  -s ours
am: acf3c39437

Change-Id: Ibeb28073a468c0af7f76ea3c1976416c4c4fe84d