gf_webvtt_sample_get_start  541 include/gpac/internal/media_dev.h u64 gf_webvtt_sample_get_start(GF_WebVTTSample * samp);
gf_webvtt_sample_get_start  757 src/media_tools/text_import.c 		s->DTS = (u64) (flusher->timescale*gf_webvtt_sample_get_start(samp)/1000);