Merge commit 'dc574658'

* commit 'dc574658':
  avconv: print filter options in -h full output.

Conflicts:
	ffmpeg_opt.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

ffmpeg_opt.c

@@ -2433,7 +2433,7 @@ void show_help_default(const char *opt, const char *arg)
         show_help_children(avformat_get_class(), flags);
         show_help_children(sws_get_class(), flags);
         show_help_children(swr_get_class(), AV_OPT_FLAG_AUDIO_PARAM);
-        show_help_children(avfilter_get_class(), AV_OPT_FLAG_FILTERING_PARAM);
+        show_help_children(avfilter_get_class(), AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_FILTERING_PARAM);
     }
 }