lavf: remove unreliable timestamp guessing heuristic

1 files changed, 0 insertions, 22 deletions

diff --git a/libavformat/utils.c b/libavformat/utils.c
index 0700c5d07f..987d68247d 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -771,25 +771,6 @@ static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
             pkt->dts += offset;
     }
 
-    if (pc && pc->dts_sync_point >= 0) {
-        // we have synchronization info from the parser
-        int64_t den = st->codec->time_base.den * (int64_t) st->time_base.num;
-        if (den > 0) {
-            int64_t num = st->codec->time_base.num * (int64_t) st->time_base.den;
-            if (pkt->dts != AV_NOPTS_VALUE) {
-                // got DTS from the stream, update reference timestamp
-                st->reference_dts = pkt->dts - pc->dts_ref_dts_delta * num / den;
-                pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
-            } else if (st->reference_dts != AV_NOPTS_VALUE) {
-                // compute DTS based on reference timestamp
-                pkt->dts = st->reference_dts + pc->dts_ref_dts_delta * num / den;
-                pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
-            }
-            if (pc->dts_sync_point > 0)
-                st->reference_dts = pkt->dts; // new reference
-        }
-    }
-
     /* This may be redundant, but it should not hurt. */
     if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
         presentation_delayed = 1;
@@ -1214,7 +1195,6 @@ void ff_read_frame_flush(AVFormatContext *s)
         }
         st->last_IP_pts = AV_NOPTS_VALUE;
         st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
-        st->reference_dts = AV_NOPTS_VALUE;
 
         st->probe_packets = MAX_PROBE_PACKETS;
 
@@ -1868,7 +1848,6 @@ static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
         st= ic->streams[i];
         st->cur_dts= st->first_dts;
         st->last_IP_pts = AV_NOPTS_VALUE;
-        st->reference_dts = AV_NOPTS_VALUE;
     }
 }
 
@@ -2618,7 +2597,6 @@ AVStream *avformat_new_stream(AVFormatContext *s, AVCodec *c)
     st->last_IP_pts = AV_NOPTS_VALUE;
     for(i=0; i<MAX_REORDER_DELAY+1; i++)
         st->pts_buffer[i]= AV_NOPTS_VALUE;
-    st->reference_dts = AV_NOPTS_VALUE;
 
     st->sample_aspect_ratio = (AVRational){0,1};