gf_isom_get_track_switch_group_count 2653 applications/mp4box/filedump.c 	gf_isom_get_track_switch_group_count(file, trackNum, &alt_group, &nb_groups);
gf_isom_get_track_switch_group_count 4553 applications/mp4box/main.c 				gf_isom_get_track_switch_group_count(file, gf_isom_get_track_by_id(file, tsel_acts[i].trackID), &alternateGroupID, &nb_groups);
gf_isom_get_track_switch_group_count 2436 include/gpac/isomedia.h GF_Err gf_isom_get_track_switch_group_count(GF_ISOFile *movie, u32 trackNumber, u32 *alternateGroupID, u32 *nb_groups);