diff --git a/lib/streaming_providers/providers/magenta2/vod_manager.py b/lib/streaming_providers/providers/magenta2/vod_manager.py
index c718f9f..a8d7ca0 100644
--- a/lib/streaming_providers/providers/magenta2/vod_manager.py
+++ b/lib/streaming_providers/providers/magenta2/vod_manager.py
@@ -1267,12 +1267,22 @@ class VodManager:
             )
 
         if playback_media_id:
-            effective_content_id = playback_media_id
+            # Extract the alphanumeric guid from the theplatform href —
+            # the SMIL selector requires the guid, not the numeric mediaId.
+            # e.g. "https://link.theplatform.eu/s/mdeprod/media/zRPPGLNGgPa1"
+            #      → guid = "zRPPGLNGgPa1"
+            guid: Optional[str] = None
+            if playback_href:
+                tail = playback_href.rstrip("/").rsplit("/media/", 1)
+                if len(tail) == 2:
+                    guid = tail[1].split("?")[0] or None
+
+            effective_content_id = guid if guid else playback_media_id
             manifest_script = playback_href
             session_manifest = True
             logger.debug(
                 f"{self._provider}: Episode {content_id} → "
-                f"resolved mediaId={playback_media_id}"
+                f"mediaId={playback_media_id}, guid={guid or '(none, using mediaId)'}"
             )
         else:
             # Fallback: keep GN id + productInformationLink so the existing