Fixes probing regression with openmpt
Fixes regression of Ticket 2583

Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
 libavformat/format.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/libavformat/format.c b/libavformat/format.c
index 38ca2a3..94fd23d 100644
--- a/libavformat/format.c
+++ b/libavformat/format.c
@@ -224,8 +224,12 @@ AVInputFormat *av_probe_input_format3(AVProbeData *pd, int 
is_opened,
                 }
             }
         } else if (fmt1->extensions) {
-            if (av_match_ext(lpd.filename, fmt1->extensions))
-                score = AVPROBE_SCORE_EXTENSION;
+            if (av_match_ext(lpd.filename, fmt1->extensions)) {
+                if (lpd.buf_size < 16384) {
+                    score = AVPROBE_SCORE_EXTENSION / 2 - 1;
+                } else
+                    score = AVPROBE_SCORE_EXTENSION;
+            }
         }
         if (av_match_name(lpd.mime_type, fmt1->mime_type)) {
             if (AVPROBE_SCORE_MIME > score) {
-- 
1.7.9.5

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