mp3: Tweak the probe scores

Having more than 10 consecutive frames decoded as mp3 should be
considered a clear signal that the sample is mp3 and not mpegps.

Reported-By: Florian Iragne <florian@iragne.fr>
CC: libav-stable@libav.org

diff --git a/libavformat/mp3dec.c b/libavformat/mp3dec.c
index 5aee21f..bf12fdb 100644 (file)
--- a/libavformat/mp3dec.c
+++ b/libavformat/mp3dec.c
@@ -81,7 +81,10 @@ static int mp3_read_probe(AVProbeData *p)
     }
     // keep this in sync with ac3 probe, both need to avoid
     // issues with MPEG-files!
-    if (first_frames >= 4) return AVPROBE_SCORE_EXTENSION + 1;
+    if (first_frames >= 10)
+        return AVPROBE_SCORE_EXTENSION + 5;
+    if (first_frames >= 4)
+        return AVPROBE_SCORE_EXTENSION + 1;
 
     if (max_frames) {
         int pes = 0, i;