According to MPEG-TS specs, the continuity_counter shall not be incremented when the adaptation_field_control of the packet equals '00' or '10'.
Example mpeg-ts stream at http://www.datafilehost.com/download-16ab1765.html -- Jindrich Makovicka
From 6e13b0248eb936df756e0207f206adbed0292193 Mon Sep 17 00:00:00 2001 From: Jindrich Makovicka <[email protected]> Date: Thu, 30 Jun 2011 12:00:56 +0200 Subject: [PATCH] mpegts: fix Continuity Counter error detection According to MPEG-TS specs, the continuity_counter shall not be incremented when the adaptation_field_control of the packet equals '00' or '10'. Signed-off-by: Jindrich Makovicka <[email protected]> --- libavformat/mpegts.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c index f2ae567..1ab104e 100644 --- a/libavformat/mpegts.c +++ b/libavformat/mpegts.c @@ -1247,7 +1247,7 @@ static int handle_packet(MpegTSContext *ts, const uint8_t *packet) { AVFormatContext *s = ts->stream; MpegTSFilter *tss; - int len, pid, cc, cc_ok, afc, is_start; + int len, pid, cc, expected_cc, cc_ok, afc, is_start; const uint8_t *p, *p_end; int64_t pos; @@ -1265,7 +1265,8 @@ static int handle_packet(MpegTSContext *ts, const uint8_t *packet) /* continuity check (currently not used) */ cc = (packet[3] & 0xf); - cc_ok = (tss->last_cc < 0) || ((((tss->last_cc + 1) & 0x0f) == cc)); + expected_cc = (packet[3] & 0x10) ? (tss->last_cc + 1) & 0x0f : tss->last_cc; + cc_ok = (tss->last_cc < 0) || (expected_cc == cc); tss->last_cc = cc; /* skip adaptation field */ -- 1.7.5.4
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