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-rw-r--r--libavformat/utils.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/libavformat/utils.c b/libavformat/utils.c
index bf9e5d2aa2..3681e117e6 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -299,9 +299,9 @@ static int set_codec_from_probe_data(AVStream *st, AVProbeData *pd, int score)
fmt = av_probe_input_format2(pd, 1, &score);
if (fmt) {
- if (strncmp(fmt->name, "mp3", 3) == 0)
+ if (!strcmp(fmt->name, "mp3"))
st->codec->codec_id = CODEC_ID_MP3;
- else if (strncmp(fmt->name, "ac3", 3) == 0)
+ else if (!strcmp(fmt->name, "ac3"))
st->codec->codec_id = CODEC_ID_AC3;
else if (!strcmp(fmt->name, "mpegvideo"))
st->codec->codec_id = CODEC_ID_MPEG2VIDEO;