static int compute_pkt_fields2(AVStream *st, AVPacket *pkt){ int delay = FFMAX(st->codec->has_b_frames, !!st->codec->max_b_frames); int num, den, frame_size, i; // av_log(st->codec, AV_LOG_DEBUG, "av_write_frame: pts:%"PRId64" dts:%"PRId64" cur_dts:%"PRId64" b:%d size:%d st:%d\n", pkt->pts, pkt->dts, st->cur_dts, delay, pkt->size, pkt->stream_index); /* if(pkt->pts == AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE) return -1;*/ /* duration field */ if (pkt->duration == 0) { compute_frame_duration(&num, &den, st, NULL, pkt); if (den && num) { pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num); } } if(pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay==0) pkt->pts= pkt->dts; //XXX/FIXME this is a temporary hack until all encoders output pts if((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay){ pkt->dts= // pkt->pts= st->cur_dts; pkt->pts= st->pts.val; } //calculate dts from pts if(pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE){ st->pts_buffer[0]= pkt->pts; for(i=1; i<delay+1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++) st->pts_buffer[i]= (i-delay-1) * pkt->duration; for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++) FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]); pkt->dts= st->pts_buffer[0]; } if(st->cur_dts && st->cur_dts != AV_NOPTS_VALUE && st->cur_dts >= pkt->dts){ av_log(st->codec, AV_LOG_ERROR, "error, non monotone timestamps %"PRId64" >= %"PRId64"\n", st->cur_dts, pkt->dts); return -1; } if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts){ av_log(st->codec, AV_LOG_ERROR, "error, pts < dts\n"); return -1; } // av_log(NULL, AV_LOG_DEBUG, "av_write_frame: pts2:%"PRId64" dts2:%"PRId64"\n", pkt->pts, pkt->dts); st->cur_dts= pkt->dts; st->pts.val= pkt->dts; /* update pts */ switch (st->codec->codec_type) { case CODEC_TYPE_AUDIO: frame_size = get_audio_frame_size(st->codec, pkt->size); /* HACK/FIXME, we skip the initial 0 size packets as they are most likely equal to the encoder delay, but it would be better if we had the real timestamps from the encoder */ if (frame_size >= 0 && (pkt->size || st->pts.num!=st->pts.den>>1 || st->pts.val)) { av_frac_add(&st->pts, (int64_t)st->time_base.den * frame_size); } break; case CODEC_TYPE_VIDEO: av_frac_add(&st->pts, (int64_t)st->time_base.den * st->codec->time_base.num); break; default: break; } return 0; }