---
 libavcodec/dcadec.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/libavcodec/dcadec.c b/libavcodec/dcadec.c
index 068dd9a..f3b3192 100644
--- a/libavcodec/dcadec.c
+++ b/libavcodec/dcadec.c
@@ -2001,6 +2001,13 @@ FF_ENABLE_DEPRECATION_WARNINGS
     for (i = 0; i < 2 * s->lfe * 4; i++)
         s->lfe_data[i] = s->lfe_data[i + lfe_samples];
 
+    /* AVMatrixEncoding
+     *
+     * DCA_STEREO_TOTAL (Lt/Rt) is equivalent to Dolby Surround */
+    ff_side_data_update_matrix_encoding(frame,
+                                        (s->output & ~DCA_LFE) == 
DCA_STEREO_TOTAL ?
+                                        AV_MATRIX_ENCODING_DOLBY : 
AV_MATRIX_ENCODING_NONE);
+
     *got_frame_ptr = 1;
 
     return buf_size;
-- 
1.8.3.4 (Apple Git-47)

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