X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Foggdec.c;h=a456c3df60234656ef23fde54295bb9fac52d859;hb=337f777f378cfcc0d6f0d01fb7125905e8b0da55;hp=9eb45499c6226028085c096ffd224aa4440b9243;hpb=8edfd0598d17a828cd59873351645ad1fbe8ff16;p=ffmpeg

diff --git a/libavformat/oggdec.c b/libavformat/oggdec.c
index 9eb45499c62..a456c3df602 100644
--- a/libavformat/oggdec.c
+++ b/libavformat/oggdec.c
@@ -226,9 +226,10 @@ static int ogg_replace_stream(AVFormatContext *s, uint32_t serial, char *magic,
         return AVERROR_INVALIDDATA;
     }
 
-    /* We only have a single stream anyway, so if there's a new stream with
-     * a different codec just replace it */
     os = &ogg->streams[0];
+    if (os->codec != codec)
+        return AVERROR(EINVAL);
+
     os->serial  = serial;
     os->codec   = codec;
     os->serial  = serial;