diff options
Diffstat (limited to 'libavformat/mux.c')
| -rw-r--r-- | libavformat/mux.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/libavformat/mux.c b/libavformat/mux.c index 0810b674a7..53eb56f0af 100644 --- a/libavformat/mux.c +++ b/libavformat/mux.c @@ -655,16 +655,33 @@ static void handle_avoid_negative_ts(FFFormatContext *si, FFStream *sti, if (si->avoid_negative_ts_status == AVOID_NEGATIVE_TS_UNKNOWN) { int use_pts = si->avoid_negative_ts_use_pts; int64_t ts = use_pts ? pkt->pts : pkt->dts; + AVRational tb = sti->pub.time_base; if (ts == AV_NOPTS_VALUE) return; + + /* Peek into the muxing queue to improve our estimate + * of the lowest timestamp if av_interleaved_write_frame() is used. */ + for (const PacketListEntry *pktl = si->packet_buffer.head; + pktl; pktl = pktl->next) { + AVRational cmp_tb = s->streams[pktl->pkt.stream_index]->time_base; + int64_t cmp_ts = use_pts ? pktl->pkt.pts : pktl->pkt.dts; + if (cmp_ts == AV_NOPTS_VALUE) + continue; + if (s->output_ts_offset) + cmp_ts += av_rescale_q(s->output_ts_offset, AV_TIME_BASE_Q, cmp_tb); + if (av_compare_ts(cmp_ts, cmp_tb, ts, tb) < 0) { + ts = cmp_ts; + tb = cmp_tb; + } + } + if (ts < 0 || ts > 0 && s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) { for (unsigned i = 0; i < s->nb_streams; i++) { AVStream *const st2 = s->streams[i]; FFStream *const sti2 = ffstream(st2); - sti2->mux_ts_offset = av_rescale_q_rnd(-ts, - sti->pub.time_base, + sti2->mux_ts_offset = av_rescale_q_rnd(-ts, tb, st2->time_base, AV_ROUND_UP); } |