X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Fsubviewerdec.c;h=61eb80af8787b571aab1095586a111b47bdef3a1;hb=6fc762b4fd2c28ef7a0689a1df5ce200e5f5948f;hp=af084f48560ddfae970d41204786719d1404c05a;hpb=ab6edb173b365d9a787c2df3a45e3a018d7843d7;p=ffmpeg

diff --git a/libavformat/subviewerdec.c b/libavformat/subviewerdec.c
index af084f48560..61eb80af878 100644
--- a/libavformat/subviewerdec.c
+++ b/libavformat/subviewerdec.c
@@ -27,6 +27,7 @@
 #include "avformat.h"
 #include "internal.h"
 #include "subtitles.h"
+#include "avio_internal.h"
 #include "libavcodec/internal.h"
 #include "libavutil/avstring.h"
 #include "libavutil/bprint.h"
@@ -78,6 +79,11 @@ static int subviewer_read_header(AVFormatContext *s)
 
     if (!st)
         return AVERROR(ENOMEM);
+    res = ffio_ensure_seekback(s->pb, 3);
+    if (res < 0)
+        return res;
+    if (avio_rb24(s->pb) != 0xefbbbf)
+        avio_seek(s->pb, -3, SEEK_CUR);
     avpriv_set_pts_info(st, 64, 1, 100);
     st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
     st->codecpar->codec_id   = AV_CODEC_ID_SUBVIEWER;