Make probing for VC1 test bitstream format stricter

Originally committed as revision 19860 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago · 23218a9801
parent 2370338850
commit 23218a9801
1 changed files with 3 additions and 1 deletions
--- a/libavformat/vc1test.c
+++ b/libavformat/vc1test.c
@ -33,7 +33,9 @@

 static int vc1t_probe(AVProbeData *p)
 {
-    if (p->buf[3] != 0xC5 || AV_RL32(&p->buf[4]) != 4)
+    if (p->buf_size < 24)
+        return 0;
+    if (p->buf[3] != 0xC5 || AV_RL32(&p->buf[4]) != 4 || AV_RL32(&p->buf[20]) != 0xC)
        return 0;

    return AVPROBE_SCORE_MAX/2;