From 2b501b553f6300bfec546fe81d2bc0473e43e223 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Sat, 2 Aug 2014 17:25:04 +0200
Subject: [PATCH] avformat/dtsdec: skip the first 4k in dts_probe()
DTS primarly needs to be separated from PCM, and PCM can contain cliping and
overshoots at the very start which can mimic DTS headers.
If this isnt sufficient then more of the DTS stream has to be decoded
and analyzed
Fixes ticket3784
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
libavformat/dtsdec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavformat/dtsdec.c b/libavformat/dtsdec.c
index 330c4285163..0ebf8472c5c 100644
--- a/libavformat/dtsdec.c
+++ b/libavformat/dtsdec.c
@@ -36,7 +36,7 @@ static int dts_probe(AVProbeData *p)
int sum, max, i;
int64_t diff = 0;
- buf = p->buf;
+ buf = p->buf + FFMIN(4096, p->buf_size);
for(; buf < (p->buf+p->buf_size)-2; buf+=2) {
bufp = buf;
--
GitLab