Improve error message in case of output file with no streams, dumping

the empty file format representation and specifying the index number
of the output file.

Originally committed as revision 15870 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/ffmpeg.c b/ffmpeg.c
index d3a4ec26c3e94dead999f34dded6611165a14e86..2056efad2c65f71d42082e6bd909278e78b092b8 100644 (file)
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -1582,7 +1582,8 @@ static int av_encode(AVFormatContext **output_files,
     for(i=0;i<nb_output_files;i++) {
         os = output_files[i];
         if (!os->nb_streams) {
-            fprintf(stderr, "Output file does not contain any stream\n");
+            dump_format(output_files[i], i, output_files[i]->filename, 1);
+            fprintf(stderr, "Output file #%d does not contain any stream\n", i);
             av_exit(1);
         }
         nb_ostreams += os->nb_streams;