Signed-off-by: James Almer <jamr...@gmail.com>
---
 libavformat/iamf_writer.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/libavformat/iamf_writer.c b/libavformat/iamf_writer.c
index 649bafc2cf..6b07dd85c9 100644
--- a/libavformat/iamf_writer.c
+++ b/libavformat/iamf_writer.c
@@ -19,6 +19,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavutil/bprint.h"
 #include "libavutil/channel_layout.h"
 #include "libavutil/intreadwrite.h"
 #include "libavutil/iamf.h"
@@ -256,7 +257,13 @@ int ff_iamf_add_audio_element(IAMFContext *iamf, const 
AVStreamGroup *stg, void
                     if (!av_channel_layout_compare(&layer->ch_layout, 
&ff_iamf_expanded_scalable_ch_layouts[j]))
                         break;
                 if (j >= FF_ARRAY_ELEMS(ff_iamf_expanded_scalable_ch_layouts)) 
{
-                    av_log(log_ctx, AV_LOG_ERROR, "Unsupported channel layout 
in stream group #%d\n", i);
+                    AVBPrint bp;
+                    av_bprint_init(&bp, 0, AV_BPRINT_SIZE_AUTOMATIC);
+                    av_channel_layout_describe_bprint(&layer->ch_layout, &bp);
+                    av_log(log_ctx, AV_LOG_ERROR, "Unsupported channel layout 
in Audio Element id %"PRId64
+                           ", Layer %d: %s\n",
+                           stg->id, i, bp.str);
+                    av_bprint_finalize(&bp, NULL);
                     return AVERROR(EINVAL);
                 }
             }
-- 
2.47.1

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