ffmpeg: Print an error if avfilter_graph_queue_command() failed

Fixes CID1271809

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 2 insertions, 0 deletions

diff --git a/ffmpeg.c b/ffmpeg.c
index fde2bcf54e..877e914e1d 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -3337,6 +3337,8 @@ static int check_keyboard_interaction(int64_t cur_time)
                         ret = AVERROR_PATCHWELCOME;
                     } else {
                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
+                        if (ret < 0)
+                            fprintf(stderr, "Queing command failed with error %s\n", av_err2str(ret));
                     }
                 }
             }