diff --git a/roku/_async/core.py b/roku/_async/core.py
index 729f03c..4ea0fa5 100644
--- a/roku/_async/core.py
+++ b/roku/_async/core.py
@@ -157,11 +157,18 @@ async def get_media_player(self):
             roku=self,
         )
 
+        # Duration isn't provided by all apps in all cases, e.g. Netflix / Amazon Prime Video
+        duration_element = root.find("duration")
+        duration = int(duration_element.text.split(" ", 1)[0]) if duration_element is not None else None
+        # Position can be absent for some states.
+        position_element = root.find("position")
+        position = int(position_element.text.split(" ", 1)[0]) if position_element is not None else None
+
         mp = MediaPlayer(
             state=root.get("state"),
             app=app,
-            position=int(root.find("position").text.split(" ", 1)[0]),
-            duration=int(root.find("duration").text.split(" ", 1)[0]),
+            position=position,
+            duration=duration,
         )
         return mp
 
diff --git a/roku/core.py b/roku/core.py
index fe0e9c8..df92e9f 100644
--- a/roku/core.py
+++ b/roku/core.py
@@ -162,11 +162,18 @@ def media_player(self):
         resp = self._get("/query/media-player")
         root = ET.fromstring(resp)
 
+        # Duration isn't provided by all apps in all cases, e.g. Netflix / Amazon Prime Video
+        duration_element = root.find("duration")
+        duration = int(duration_element.text.split(" ", 1)[0]) if duration_element is not None else None
+        # Position can be absent for some states.
+        position_element = root.find("position")
+        position = int(position_element.text.split(" ", 1)[0]) if position_element is not None else None
+
         mp = MediaPlayer(
             state=root.get("state"),
             app=self[int(root.find("plugin").get("id"))],
-            position=int(root.find("position").text.split(" ", 1)[0]),
-            duration=int(root.find("duration").text.split(" ", 1)[0]),
+            position=position,
+            duration=duration,
         )
         return mp
 
diff --git a/roku/models.py b/roku/models.py
index e9a69df..2f418bc 100644
--- a/roku/models.py
+++ b/roku/models.py
@@ -94,9 +94,10 @@ def __init__(self, state, app, position, duration):
         self.duration = duration
 
     def __repr__(self):
-        return "<MediaPlayer: %s in %s at %s/%s ms>" % (
+        position_str = f("%s", self.position) if self.position is not None else "??"
+        progress = f("%s/%s", position_str, self.duration) if self.duration is not None else position_str 
+        return "<MediaPlayer: %s in %s at %s ms>" % (
             self.state,
             self.app.name,
-            self.position,
-            self.duration,
+            progress,
         )