SUP_PGS_MAGIC      44 libavformat/supdec.c     if (avio_rb16(s->pb) != SUP_PGS_MAGIC)
SUP_PGS_MAGIC      81 libavformat/supdec.c         if (AV_RB16(buf) != SUP_PGS_MAGIC)
SUP_PGS_MAGIC      55 libavformat/supenc.c         avio_wb16(s->pb, SUP_PGS_MAGIC);