---
libavformat/mov.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/libavformat/mov.c b/libavformat/mov.c
index 90de4f1..94f19a6 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -492,16 +492,20 @@ static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
{
AVStream *st;
- int ac3info, acmod, lfeon;
+ int ac3info, acmod, lfeon, bsmod;
if (c->fc->nb_streams < 1)
return 0;
st = c->fc->streams[c->fc->nb_streams-1];
ac3info = avio_rb24(pb);
+ bsmod = (ac3info >> 14) & 0x7;
acmod = (ac3info >> 11) & 0x7;
lfeon = (ac3info >> 10) & 0x1;
st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
+ st->codec->audio_service_type = bsmod;
+ if (st->codec->channels > 1 && bsmod == 0x7)
+ st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
return 0;
}
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