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-rw-r--r--libavcodec/aacdec.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/aacdec.c b/libavcodec/aacdec.c
index 0c7e2c4d39..74628d6b14 100644
--- a/libavcodec/aacdec.c
+++ b/libavcodec/aacdec.c
@@ -291,6 +291,11 @@ static uint64_t sniff_channel_order(uint8_t (*layout_map)[3], int tags)
if (num_back_channels < 0)
return 0;
+ if (num_side_channels == 0 && num_back_channels >= 4) {
+ num_side_channels = 2;
+ num_back_channels -= 2;
+ }
+
i = 0;
if (num_front_channels & 1) {
e2c_vec[i] = (struct elem_to_channel) {