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[FFmpeg-devel] avformat/mov: decrease probe score for a random tag

Message ID tencent_B69C08E0E05B1A34F780C8358D3F3D562D09@qq.com
State New
Headers show
Series [FFmpeg-devel] avformat/mov: decrease probe score for a random tag | expand


Context Check Description
andriy/make_x86 success Make finished
andriy/make_fate_x86 success Make fate finished

Commit Message

zhilizhao(赵志立) May 22, 2023, 2:07 p.m. UTC
From: Zhao Zhili <zhilizhao@tencent.com>

The tag comes from samples/ffmpeg/mov/unrecognized/bartjones.mov
really looks like some random data. Now the random tag matched
another file, which isn't a mov.
 libavformat/mov.c | 2 ++
 1 file changed, 2 insertions(+)
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diff --git a/libavformat/mov.c b/libavformat/mov.c
index 9fdeef057e..285a4e99ca 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -8107,6 +8107,8 @@  static int mov_probe(const AVProbeData *p)
             score  = FFMAX(score, AVPROBE_SCORE_MAX - 5);
         case MKTAG(0x82,0x82,0x7f,0x7d):
+            score  = FFMAX(score, AVPROBE_SCORE_EXTENSION - 5);
+            break;
         case MKTAG('s','k','i','p'):
         case MKTAG('u','u','i','d'):
         case MKTAG('p','r','f','l'):