ret = transcode_video (ist, &avpkt, &got_output, &pkt_pts);
if (avpkt.duration)
ist->next_dts += av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
+ else if (ist->st->r_frame_rate.num)
+ ist->next_dts += av_rescale_q(1, (AVRational){ist->st->r_frame_rate.den,
+ ist->st->r_frame_rate.num},
+ AV_TIME_BASE_Q);
else if (ist->st->codec->time_base.num != 0) {
int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
ist->st->codec->ticks_per_frame;