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avformat/utils: Compute the current pts of mpeg1/2 I/P frames from the next frame when available

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-12-09 03:34:20 +01:00
parent 9e561410c0
commit dd70470d72
1 changed files with 8 additions and 0 deletions
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8
libavformat/utils.c
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@ -1102,6 +1102,14 @@ static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
st->last_IP_duration = pkt->duration;
if (pkt->dts != AV_NOPTS_VALUE)
st->cur_dts = pkt->dts + st->last_IP_duration;
if (pkt->dts != AV_NOPTS_VALUE &&
pkt->pts == AV_NOPTS_VALUE &&
st->last_IP_duration > 0 &&
(st->cur_dts - next_dts) <= 1 &&
next_dts != next_pts &&
next_pts != AV_NOPTS_VALUE)
pkt->pts = next_dts;
st->last_IP_duration = pkt->duration;
st->last_IP_pts = pkt->pts;
/* Cannot compute PTS if not present (we can compute it only