(pkt->pts == 0 || wc->duration_written >= wc->chunk_duration))) {
wc->duration_written = 0;
if ((ret = chunk_end(s)) < 0 || (ret = chunk_start(s)) < 0) {
(pkt->pts == 0 || wc->duration_written >= wc->chunk_duration))) {
wc->duration_written = 0;
if ((ret = chunk_end(s)) < 0 || (ret = chunk_start(s)) < 0) {