SYSTEM_HEADER_START_CODE   80 libavformat/mpeg.c             if (code == SYSTEM_HEADER_START_CODE)
SYSTEM_HEADER_START_CODE  261 libavformat/mpeg.c     if (startcode == SYSTEM_HEADER_START_CODE)
SYSTEM_HEADER_START_CODE  134 libavformat/mpegenc.c     put_bits32(&pb, SYSTEM_HEADER_START_CODE);