gf_isom_set_default_sync_track 1562 applications/mp42ts/main.c 			gf_isom_set_default_sync_track(source->mp4, priv->track);
gf_isom_set_default_sync_track  947 applications/mp4box/main.c 				gf_isom_set_default_sync_track(file, i+1);
gf_isom_set_default_sync_track  791 include/gpac/isomedia.h void gf_isom_set_default_sync_track(GF_ISOFile *file, u32 trackNumber);