@@ -520,7 +520,13 @@ static int ffserver_save_avoption(const char *opt, const char *arg, int type, FF

         //explicit private option

         snprintf(buff, sizeof(buff), "%s", opt);

         codec_name = buff;

-        option = strchr(buff, ':');

+        if(!(option = strchr(buff, ':'))){

+            report_config_error(config->filename, config->line_num,

+                                AV_LOG_ERROR, &config->errors,

+                                "Syntax error. Unmatched ':'\n");

+            return -1;

+

+        }

         buff[option - buff] = '\0';

         option++;

         if ((ret = ffserver_set_codec(ctx, codec_name, config)) < 0)