From: Stefano Sabatini <stefano.sabatini-l...@poste.it>

Signed-off-by: Anton Khirnov <an...@khirnov.net>
---
 ffmpeg.c |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/ffmpeg.c b/ffmpeg.c
index bf80667..4671bd0 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -594,8 +594,15 @@ static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
             if(*p == st->codec->pix_fmt)
                 break;
         }
-        if(*p == -1)
+        if (*p == -1) {
+            if(st->codec->pix_fmt != PIX_FMT_NONE)
+                av_log(NULL, AV_LOG_WARNING,
+                        "Incompatible pixel format '%s' for codec '%s', 
auto-selecting format '%s'\n",
+                        av_pix_fmt_descriptors[st->codec->pix_fmt].name,
+                        codec->name,
+                        av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
             st->codec->pix_fmt = codec->pix_fmts[0];
+        }
     }
 }
 
-- 
1.7.5.1

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