On Mon, 7 Nov 2016, Andreas Cadhalpun wrote:

Signed-off-by: Andreas Cadhalpun <andreas.cadhal...@googlemail.com>
---
libavformat/mpegts.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c
index fad10c6..77d63f2 100644
--- a/libavformat/mpegts.c
+++ b/libavformat/mpegts.c
@@ -2692,6 +2692,10 @@ static int mpegts_read_header(AVFormatContext *s)
        /* NOTE1: the bitrate is computed without the FEC */
        /* NOTE2: it is only the bitrate of the start of the stream */
        ts->pcr_incr = (pcrs[1] - pcrs[0]) / (packet_count[1] - 
packet_count[0]);
+        if (ts->pcr_incr <= 0) {

As far as I see a negative pcr_incr can happen in valid streams in case of a PCR wraparound.

Regards,
Marton
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