[FFmpeg-devel] [PATCH 5/5] avformat/mp3dec: require 90% of a file to be mp3 if only 1 mp3 frame is found in sequence

Michael Niedermayer michael at niedermayer.cc
Sat May 12 19:33:29 EEST 2018


This eliminates several low score detections of non mp3 files

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
 libavformat/mp3dec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/mp3dec.c b/libavformat/mp3dec.c
index d419f8c9fe..ef884934e1 100644
--- a/libavformat/mp3dec.c
+++ b/libavformat/mp3dec.c
@@ -112,7 +112,7 @@ static int mp3_read_probe(AVProbeData *p)
     else if(ff_id3v2_match(buf0, ID3v2_DEFAULT_MAGIC) && 2*ff_id3v2_tag_len(buf0) >= p->buf_size)
                            return p->buf_size < PROBE_BUF_MAX ? AVPROBE_SCORE_EXTENSION / 4 : AVPROBE_SCORE_EXTENSION - 2;
     else if(first_frames > 1 && whole_used) return 5;
-    else if(max_frames>=1 && p->buf_size < 2*max_framesizes) return 1;
+    else if(max_frames>=1 && p->buf_size < 10*max_framesizes) return 1;
     else                   return 0;
 //mpegps_mp3_unrecognized_format.mpg has max_frames=3
 }
-- 
2.17.0



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