[FFmpeg-cvslog] lavfi: print the error message when threading init fails.

[Nicolas George]

ffmpeg | branch: master | Nicolas George <george at nsup.org> | Mon Jun 19 10:28:41 2017 +0200| [d790f18ac0c3ef82459ebb526039d42b1ea73bc2] | committer: Nicolas George

lavfi: print the error message when threading init fails.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=d790f18ac0c3ef82459ebb526039d42b1ea73bc2
---

 libavfilter/avfiltergraph.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavfilter/avfiltergraph.c b/libavfilter/avfiltergraph.c
index 598e50a077..4304c06847 100644
--- a/libavfilter/avfiltergraph.c
+++ b/libavfilter/avfiltergraph.c
@@ -193,7 +193,7 @@ AVFilterContext *avfilter_graph_alloc_filter(AVFilterGraph *graph,
         } else {
             int ret = ff_graph_thread_init(graph);
             if (ret < 0) {
-                av_log(graph, AV_LOG_ERROR, "Error initializing threading.\n");
+                av_log(graph, AV_LOG_ERROR, "Error initializing threading: %s.\n", av_err2str(ret));
                 return NULL;
             }
         }