diff --git a/libavformat/mov.c b/libavformat/mov.c
index 84565c8..c34d097 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -1937,7 +1937,6 @@ static void mov_build_index(MOVContext *mov, AVStream *st)
         if (sc->empty_duration)
             sc->empty_duration = av_rescale(sc->empty_duration, sc->time_scale, mov->time_scale);
         sc->time_offset = sc->start_time - sc->empty_duration;
-        current_dts = -sc->time_offset;
         if (sc->ctts_count>0 && sc->stts_count>0 &&
             sc->ctts_data[0].duration / FFMAX(sc->stts_data[0].duration, 1) > 16) {
             /* more than 16 frames delay, dts are likely wrong
@@ -3240,7 +3239,7 @@ static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
     pkt->stream_index = sc->ffindex;
     pkt->dts = sample->timestamp;
     if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
-        pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
+        pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration - sc->time_offset;
         /* update ctts context */
         sc->ctts_sample++;
         if (sc->ctts_index < sc->ctts_count &&