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-rw-r--r--fftools/ffmpeg.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/fftools/ffmpeg.c b/fftools/ffmpeg.c
index 6d64bc1043..3ee31473dc 100644
--- a/fftools/ffmpeg.c
+++ b/fftools/ffmpeg.c
@@ -2665,8 +2665,13 @@ static int process_input_packet(InputStream *ist, const AVPacket *pkt, int no_eo
ist->next_dts = AV_NOPTS_VALUE;
}
- if (got_output)
- ist->next_pts += av_rescale_q(duration_pts, ist->st->time_base, AV_TIME_BASE_Q);
+ if (got_output) {
+ if (duration_pts > 0) {
+ ist->next_pts += av_rescale_q(duration_pts, ist->st->time_base, AV_TIME_BASE_Q);
+ } else {
+ ist->next_pts += duration_dts;
+ }
+ }
break;
case AVMEDIA_TYPE_SUBTITLE:
if (repeating)