[FFmpeg-devel] [PATCH] avcodec/h264dec: check number of SPS in is_extra

[Zhao Zhili]

---
 libavcodec/h264dec.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavcodec/h264dec.c b/libavcodec/h264dec.c
index bffce52..6f7530d 100644
--- a/libavcodec/h264dec.c
+++ b/libavcodec/h264dec.c
@@ -871,6 +871,8 @@ static int is_extra(const uint8_t *buf, int buf_size)
 {
     int cnt= buf[5]&0x1f;
     const uint8_t *p= buf+6;
+    if (!cnt)
+        return 0;
     while(cnt--){
         int nalsize= AV_RB16(p) + 2;
         if(nalsize > buf_size - (p-buf) || (p[2] & 0x9F) != 7)
-- 
2.9.5