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-rw-r--r--libavformat/aiffdec.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/libavformat/aiffdec.c b/libavformat/aiffdec.c
index 79b78533e3..8d466fa815 100644
--- a/libavformat/aiffdec.c
+++ b/libavformat/aiffdec.c
@@ -280,8 +280,10 @@ static int aiff_read_header(AVFormatContext *s)
return AVERROR(ENOMEM);
st->codec->extradata_size = size;
avio_read(pb, st->codec->extradata, size);
- if (st->codec->codec_id == AV_CODEC_ID_QDM2 && size>=12*4 && !st->codec->block_align)
+ if (st->codec->codec_id == AV_CODEC_ID_QDM2 && size>=12*4 && !st->codec->block_align) {
st->codec->block_align = AV_RB32(st->codec->extradata+11*4);
+ aiff->block_duration = AV_RB32(st->codec->extradata+9*4);
+ }
break;
case MKTAG('C','H','A','N'):
if(ff_mov_read_chan(s, pb, st, size) < 0)