start_guid 572 libavformat/wavenc.c start_guid(pb, ff_w64_guid_fmt, &start); start_guid 582 libavformat/wavenc.c start_guid(pb, ff_w64_guid_fact, &wav->fact_pos); start_guid 587 libavformat/wavenc.c start_guid(pb, ff_w64_guid_data, &wav->data);