gf_isom_update_webvtt_description 3678 include/gpac/internal/isomedia_dev.h GF_Err gf_isom_update_webvtt_description(GF_ISOFile *movie, u32 trackNumber, u32 descriptionIndex, const char *config);
gf_isom_update_webvtt_description 1990 include/gpac/isomedia.h GF_Err gf_isom_update_webvtt_description(GF_ISOFile *movie, u32 trackNumber, u32 descriptionIndex, const char *config);
gf_isom_update_webvtt_description  747 src/media_tools/text_import.c 	gf_isom_update_webvtt_description(flusher->import->dest, flusher->track, flusher->descriptionIndex, config);