diff --git a/dist/renamer-0.4.7-py3-none-any.whl b/dist/renamer-0.4.7-py3-none-any.whl
new file mode 100644
index 0000000..026e6ef
Binary files /dev/null and b/dist/renamer-0.4.7-py3-none-any.whl differ
diff --git a/pyproject.toml b/pyproject.toml
index 1e1ccdd..8a94e18 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "renamer"
-version = "0.4.6"
+version = "0.4.7"
 description = "Terminal-based media file renamer and metadata viewer"
 readme = "README.md"
 requires-python = ">=3.11"
diff --git a/renamer/extractors/default_extractor.py b/renamer/extractors/default_extractor.py
index e9c7223..9b1834f 100644
--- a/renamer/extractors/default_extractor.py
+++ b/renamer/extractors/default_extractor.py
@@ -23,7 +23,7 @@ class DefaultExtractor:
         return None
 
     def extract_special_info(self):
-        return []
+        return None
 
     def extract_audio_langs(self):
         return None
@@ -55,6 +55,12 @@ class DefaultExtractor:
     def extract_subtitle_tracks(self):
         return []
 
+    def extract_anamorphic(self):
+        return None
+
+    def extract_extension(self):
+        return None
+
     def extract_tmdb_url(self):
         return None
 
diff --git a/renamer/extractors/extractor.py b/renamer/extractors/extractor.py
index 2dfd438..05d10d7 100644
--- a/renamer/extractors/extractor.py
+++ b/renamer/extractors/extractor.py
@@ -76,6 +76,18 @@ class MediaExtractor:
                     ("Default", "extract_hdr"),
                 ],
             },
+            "anamorphic": {
+                "sources": [
+                    ("MediaInfo", "extract_anamorphic"),
+                    ("Default", "extract_anamorphic"),
+                ],
+            },
+            "3d_layout": {
+                "sources": [
+                    ("MediaInfo", "extract_3d_layout"),
+                    ("Default", "extract_3d_layout"),
+                ],
+            },
             "movie_db": {
                 "sources": [
                     ("TMDB", "extract_movie_db"),
@@ -128,6 +140,7 @@ class MediaExtractor:
             },
             "extension": {
                 "sources": [
+                    ("MediaInfo", "extract_extension"),
                     ("FileInfo", "extract_extension"),
                     ("Default", "extract_extension"),
                 ],
diff --git a/renamer/extractors/mediainfo_extractor.py b/renamer/extractors/mediainfo_extractor.py
index 0266d6f..79b62a6 100644
--- a/renamer/extractors/mediainfo_extractor.py
+++ b/renamer/extractors/mediainfo_extractor.py
@@ -1,7 +1,7 @@
 from pathlib import Path
 from pymediainfo import MediaInfo
 from collections import Counter
-from ..constants import FRAME_CLASSES
+from ..constants import FRAME_CLASSES, MEDIA_TYPES
 import langcodes
 
 
@@ -21,6 +21,15 @@ class MediaInfoExtractor:
             self.audio_tracks = []
             self.sub_tracks = []
 
+        # Build mapping from meta_type to extensions
+        self._format_to_extensions = {}
+        for ext, info in MEDIA_TYPES.items():
+            meta_type = info.get('meta_type')
+            if meta_type:
+                if meta_type not in self._format_to_extensions:
+                    self._format_to_extensions[meta_type] = []
+                self._format_to_extensions[meta_type].append(ext)
+
     def _get_frame_class_from_height(self, height: int) -> str | None:
         """Get frame class from video height, finding closest match if exact not found"""
         if not height:
@@ -182,4 +191,51 @@ class MediaInfoExtractor:
                 'format': getattr(s, 'format', None) or getattr(s, 'codec', None) or 'unknown',
             }
             tracks.append(track_data)
-        return tracks
\ No newline at end of file
+        return tracks
+
+    def is_3d(self) -> bool:
+        """Check if the video is 3D"""
+        if not self.video_tracks:
+            return False
+        multi_view = getattr(self.video_tracks[0], 'multi_view_count', None)
+        if multi_view and int(multi_view) > 1:
+            return True
+        stereoscopic = getattr(self.video_tracks[0], 'stereoscopic', None)
+        if stereoscopic == 'Yes':
+            return True
+        return False
+
+    def extract_anamorphic(self) -> str | None:
+        """Extract anamorphic info for 3D videos"""
+        if not self.video_tracks:
+            return None
+        anamorphic = getattr(self.video_tracks[0], 'anamorphic', None)
+        if anamorphic == 'Yes' and self.is_3d():
+            return 'Anamorphic:Yes'
+        return None
+
+    def extract_extension(self) -> str | None:
+        """Extract file extension based on container format"""
+        if not self.media_info:
+            return None
+        general_track = next((t for t in self.media_info.tracks if t.track_type == 'General'), None)
+        if not general_track:
+            return None
+        format_ = getattr(general_track, 'format', None)
+        if format_ in self._format_to_extensions:
+            exts = self._format_to_extensions[format_]
+            if format_ == 'Matroska':
+                if self.is_3d() and 'mk3d' in exts:
+                    return 'mk3d'
+                else:
+                    return 'mkv'
+            else:
+                return exts[0] if exts else None
+        return None
+
+    def extract_3d_layout(self) -> str | None:
+        """Extract 3D stereoscopic layout from MediaInfo"""
+        if not self.is_3d():
+            return None
+        stereoscopic = getattr(self.video_tracks[0], 'stereoscopic', None)
+        return stereoscopic if stereoscopic else None
\ No newline at end of file
diff --git a/renamer/formatters/media_formatter.py b/renamer/formatters/media_formatter.py
index 12e766d..ac82445 100644
--- a/renamer/formatters/media_formatter.py
+++ b/renamer/formatters/media_formatter.py
@@ -253,6 +253,25 @@ class MediaFormatter:
                 or "Not extracted",
                 "display_formatters": [TextFormatter.grey],
             },
+            {
+                "label": "Anamorphic",
+                "label_formatters": [TextFormatter.bold],
+                "value": self.extractor.get("anamorphic", "MediaInfo") or "Not extracted",
+                "display_formatters": [TextFormatter.grey],
+            },
+            {
+                "label": "Extension",
+                "label_formatters": [TextFormatter.bold],
+                "value": self.extractor.get("extension", "MediaInfo") or "Not extracted",
+                "value_formatters": [ExtensionFormatter.format_extension_info],
+                "display_formatters": [TextFormatter.grey],
+            },
+            {
+                "label": "3D Layout",
+                "label_formatters": [TextFormatter.bold],
+                "value": self.extractor.get("3d_layout", "MediaInfo") or "Not extracted",
+                "display_formatters": [TextFormatter.grey],
+            },
         ]
         return FormatterApplier.format_data_items(data)
 
diff --git a/renamer/test/test_mediainfo_extractor.py b/renamer/test/test_mediainfo_extractor.py
index a1de9d1..5d3665d 100644
--- a/renamer/test/test_mediainfo_extractor.py
+++ b/renamer/test/test_mediainfo_extractor.py
@@ -29,4 +29,22 @@ class TestMediaInfoExtractor:
         """Test extracting audio languages"""
         langs = extractor.extract_audio_langs()
         # Text files don't have audio tracks
-        assert langs is None
\ No newline at end of file
+        assert langs is None
+
+    def test_extract_anamorphic(self, extractor, test_file):
+        """Test extracting anamorphic info"""
+        anamorphic = extractor.extract_anamorphic()
+        # Text files don't have video tracks
+        assert anamorphic is None
+
+    def test_extract_extension(self, extractor, test_file):
+        """Test extracting extension"""
+        extension = extractor.extract_extension()
+        # For text file, should return None since no media info
+        assert extension is None
+
+    def test_is_3d(self, extractor, test_file):
+        """Test checking if video is 3D"""
+        is_3d = extractor.is_3d()
+        # Text files don't have video tracks
+        assert is_3d is False
\ No newline at end of file
diff --git a/uv.lock b/uv.lock
index c38f3a1..156c340 100644
--- a/uv.lock
+++ b/uv.lock
@@ -255,7 +255,7 @@ wheels = [
 
 [[package]]
 name = "renamer"
-version = "0.4.6"
+version = "0.4.7"
 source = { editable = "." }
 dependencies = [
     { name = "langcodes" },