diff --git a/beets/mediafile.py b/beets/mediafile.py
index 7522acf0a..c820dcb3b 100644
--- a/beets/mediafile.py
+++ b/beets/mediafile.py
@@ -326,7 +326,11 @@ class Image(object):
         self.data = data
         self.desc = desc
         if isinstance(type, int):
-            type = list(ImageType)[type]
+            try:
+                type = list(ImageType)[type]
+            except IndexError:
+                log.debug(u"ignoring unknown image type index {0}", type)
+                type = ImageType.other
         self.type = type
 
     @property
diff --git a/beetsplug/embedart.py b/beetsplug/embedart.py
index 3192e8c04..6f6daa96f 100644
--- a/beetsplug/embedart.py
+++ b/beetsplug/embedart.py
@@ -93,10 +93,10 @@ class EmbedCoverArtPlugin(BeetsPlugin):
                                       help='image output file')
 
         def extract_func(lib, opts, args):
-            outpath = normpath(opts.outpath or 'cover')
-            item = lib.items(decargs(args)).get()
-            if item:
-                self.extract(outpath, item)
+            outpath = normpath(opts.outpath or config['art_filename'].get())
+            for item in lib.items(decargs(args)):
+                if self.extract(outpath, item):
+                    return
         extract_cmd.func = extract_func
 
         # Clear command.
diff --git a/docs/changelog.rst b/docs/changelog.rst
index 1b85248f3..7ad300504 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -22,6 +22,8 @@ Features:
 * :doc:`plugins/mbsync`: A new ``-f/--format`` option controls the output
   format when listing unrecognized items. The output is also now more helpful
   by default. :bug:`1246`
+* :doc:`/plugins/fetchart`: Names of extracted image art is taken from the
+  ``art_filename`` configuration option. :bug:`1258`
 
 Fixes:
 
@@ -46,6 +48,8 @@ Fixes:
   :bug:`1248`
 * :doc:`/plugins/embedart`: We now show a comprehensible error message when
   ``beet embedart -f FILE`` is given a non-existent path. :bug:`1252`
+* Fix a crash when a file has an unrecognized image type tag. Thanks to
+  Matthias Kiefer. :bug:`1260`
 
 For developers:
 
diff --git a/docs/plugins/embedart.rst b/docs/plugins/embedart.rst
index bf99c3873..273046979 100644
--- a/docs/plugins/embedart.rst
+++ b/docs/plugins/embedart.rst
@@ -80,8 +80,9 @@ embedded album art:
 * ``beet extractart [-o FILE] QUERY``: extracts the image from an item matching
   the query and stores it in a file. You can specify the destination file using
   the ``-o`` option, but leave off the extension: it will be chosen
-  automatically. The destination filename defaults to ``cover`` if it's not
-  specified.
+  automatically. The destination filename is specified using the
+  ``art_filename`` configuration option. It defaults to ``cover`` if it's not
+  specified via ``-o`` nor the config.
 
 * ``beet clearart QUERY``: removes all embedded images from all items matching
   the query. (Use with caution!)
diff --git a/test/rsrc/image_unknown_type.mp3 b/test/rsrc/image_unknown_type.mp3
new file mode 100755
index 000000000..441adf62a
Binary files /dev/null and b/test/rsrc/image_unknown_type.mp3 differ
diff --git a/test/test_mediafile.py b/test/test_mediafile.py
index c685cdd94..74f6fe8c5 100644
--- a/test/test_mediafile.py
+++ b/test/test_mediafile.py
@@ -730,6 +730,10 @@ class MP3Test(ReadWriteTestBase, PartialTestMixin,
         'channels': 1,
     }
 
+    def test_unknown_apic_type(self):
+        mediafile = self._mediafile_fixture('image_unknown_type')
+        self.assertEqual(mediafile.images[0].type, ImageType.other)
+
 
 class MP4Test(ReadWriteTestBase, PartialTestMixin,
               ImageStructureTestMixin, unittest.TestCase):