id3v2_check_write_tag 232 libavformat/id3v2enc.c if ((ret = id3v2_check_write_tag(id3, pb, t, ff_id3v2_tags, enc)) > 0) { id3v2_check_write_tag 236 libavformat/id3v2enc.c if ((ret = id3v2_check_write_tag(id3, pb, t, id3->version == 3 ?