diff --git a/src/devede/avconv_converter.py b/src/devede/avconv_converter.py
index 382fdb5..84c44fe 100644
--- a/src/devede/avconv_converter.py
+++ b/src/devede/avconv_converter.py
@@ -31,14 +31,67 @@ class avconv_converter(devede.executor.executor):
     supports_menu = True
     supports_burn = False
     display_name = "AVCONV"
-    disc_types = ["dvd","vcd","svcd","cvd","divx","mkv"]
+    disc_types = []
 
     @staticmethod
     def check_is_installed():
         try:
-            handle = subprocess.Popen(["avconv","-version"], stdout = subprocess.PIPE, stderr = subprocess.PIPE)
+            handle = subprocess.Popen(["avconv","-codecs"], stdout = subprocess.PIPE, stderr = subprocess.PIPE)
             (stdout, stderr) = handle.communicate()
             if 0==handle.wait():
+                mp2 = False
+                mp3 = False
+                ac3 = False
+                mpeg1 = False
+                mpeg2 = False
+                divx = False
+                h264 = False
+                for line in stdout.decode("latin-1").split("\n"):
+                    parts = line.split(" ")
+                    if len(parts) < 2:
+                        continue
+                    if len(parts[0]) != 6:
+                        continue
+                    capabilities = parts[0]
+                    codec = parts[1]
+
+                    if capabilities[1] != 'E':
+                        continue
+
+                    if (codec == "mpeg1video"):
+                        mpeg1 = True
+                        continue
+                    if (codec == "mpeg2video"):
+                        mpeg2 = True
+                        continue
+                    if (codec == "mp2"):
+                        mp2 = True
+                        continue
+                    if (codec == "mp3"):
+                        mp3 = True
+                        continue
+                    if (codec == "ac3"):
+                        ac3 = True
+                        continue
+                    if (codec == "h264") or (codec == "H264"):
+                        h264 = True
+                        continue
+                    if (codec == "mpeg4"):
+                        divx = True
+                        continue
+
+                if (mpeg1 and mp2):
+                    devede.avconv_converter.avconv_converter.disc_types.append("vcd")
+                if (mpeg2 and mp2):
+                    devede.avconv_converter.avconv_converter.disc_types.append("svcd")
+                    devede.avconv_converter.avconv_converter.disc_types.append("cvd")
+                if (mpeg2 and mp2 and ac3):
+                    devede.avconv_converter.avconv_converter.disc_types.append("dvd")
+                if (divx and mp3):
+                    devede.avconv_converter.avconv_converter.disc_types.append("divx")
+                if (h264 and mp3):
+                    devede.avconv_converter.avconv_converter.disc_types.append("mkv")
+
                 return True
             else:
                 return False
diff --git a/src/devede/converter.py b/src/devede/converter.py
index 26241bf..d2214b7 100644
--- a/src/devede/converter.py
+++ b/src/devede/converter.py
@@ -164,7 +164,7 @@ class converter:
     def get_menu_converter(self):
         """ returns a class for the desired menu converter, or the most priviledged if the desired is not installed """
 
-        if (self.config.menu_converter == None) or (self.config.menu_converter not in self.analizers):
+        if (self.config.menu_converter == None) or (self.config.menu_converter not in self.menuers):
             return self.default_menuer
         else:
             return self.menuers[self.config.menu_converter]
@@ -172,10 +172,18 @@ class converter:
     def get_disc_converter(self):
         """ returns a class for the desired disc converter, or the most priviledged if the desired is not installed """
 
-        if (self.config.film_converter == None) or (self.config.film_converter not in self.analizers):
-            return self.default_converter
-        else:
-            return self.converters[self.config.film_converter]
+        # if there is a film converter chosen by the user, and it is installed in the system
+        if (self.config.film_converter != None) and (self.config.film_converter in self.converters):
+            # and that converter supports the current disc type
+            if self.converters[self.config.film_converter].disc_types.count(self.config.disc_type) != 0:
+                # return that converter
+                return self.converters[self.config.film_converter]
+        # if not, return the first available converter that supports the current disc type
+        for converter in self.converters:
+            if converter.disc_types.count(self.config.disc_type) != 0:
+                return converter
+        return None
+            
 
     def get_burner(self):
         """ returns a class for the desired burner, or the most priviledged if the desired is not installed """
diff --git a/src/devede_ng.py b/src/devede_ng.py
index bbd0309..40574b5 100755
--- a/src/devede_ng.py
+++ b/src/devede_ng.py
@@ -25,6 +25,7 @@ from gi.repository import Gtk
 import devede.project
 import devede.configuration_data
 import devede.choose_disc_type
+import devede.converter
 
 config_data = devede.configuration_data.configuration.get_config()
 
@@ -46,5 +47,7 @@ Gtk.init(sys.argv)
 
 mwindow = devede.project.devede_project()
 ask_type = devede.choose_disc_type.choose_disc_type()
+# this allows to check the availability of all the programs needed for Devede
+devede.converter.converter.get_converter()
 Gtk.main()
 config_data.save_config()