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-rw-r--r--libavformat/mpegts.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c
index a10f5dca92..5067f779a7 100644
--- a/libavformat/mpegts.c
+++ b/libavformat/mpegts.c
@@ -347,8 +347,8 @@ static int analyze(const uint8_t *buf, int size, int packet_size, int *index){
memset(stat, 0, packet_size*sizeof(int));
- for(x=i=0; i<size; i++){
- if(buf[i] == 0x47){
+ for(x=i=0; i<size-3; i++){
+ if(buf[i] == 0x47 && !(buf[i+1] & 0x80) && (buf[i+3] & 0x30)){
stat[x]++;
if(stat[x] > best_score){
best_score= stat[x];