diff --git a/homeassistant/components/onvif/parsers.py b/homeassistant/components/onvif/parsers.py
index abb1f114ce5..8e6e3e25861 100644
--- a/homeassistant/components/onvif/parsers.py
+++ b/homeassistant/components/onvif/parsers.py
@@ -15,6 +15,19 @@ PARSERS: Registry[
     str, Callable[[str, Any], Coroutine[Any, Any, Event | None]]
 ] = Registry()
 
+VIDEO_SOURCE_MAPPING = {
+    "vsconf": "VideoSourceToken",
+}
+
+
+def _normalize_video_source(source: str) -> str:
+    """Normalize video source.
+
+    Some cameras do not set the VideoSourceToken correctly so we get duplicate
+    sensors, so we need to normalize it to the correct value.
+    """
+    return VIDEO_SOURCE_MAPPING.get(source, source)
+
 
 def local_datetime_or_none(value: str) -> datetime.datetime | None:
     """Convert strings to datetimes, if invalid, return None."""
@@ -188,7 +201,7 @@ async def async_parse_field_detector(uid: str, msg) -> Event | None:
         rule = ""
         for source in msg.Message._value_1.Source.SimpleItem:
             if source.Name == "VideoSourceConfigurationToken":
-                video_source = source.Value
+                video_source = _normalize_video_source(source.Value)
             if source.Name == "VideoAnalyticsConfigurationToken":
                 video_analytics = source.Value
             if source.Name == "Rule":
@@ -220,7 +233,7 @@ async def async_parse_cell_motion_detector(uid: str, msg) -> Event | None:
         rule = ""
         for source in msg.Message._value_1.Source.SimpleItem:
             if source.Name == "VideoSourceConfigurationToken":
-                video_source = source.Value
+                video_source = _normalize_video_source(source.Value)
             if source.Name == "VideoAnalyticsConfigurationToken":
                 video_analytics = source.Value
             if source.Name == "Rule":
@@ -251,7 +264,7 @@ async def async_parse_motion_region_detector(uid: str, msg) -> Event | None:
         rule = ""
         for source in msg.Message._value_1.Source.SimpleItem:
             if source.Name == "VideoSourceConfigurationToken":
-                video_source = source.Value
+                video_source = _normalize_video_source(source.Value)
             if source.Name == "VideoAnalyticsConfigurationToken":
                 video_analytics = source.Value
             if source.Name == "Rule":
@@ -282,7 +295,7 @@ async def async_parse_tamper_detector(uid: str, msg) -> Event | None:
         rule = ""
         for source in msg.Message._value_1.Source.SimpleItem:
             if source.Name == "VideoSourceConfigurationToken":
-                video_source = source.Value
+                video_source = _normalize_video_source(source.Value)
             if source.Name == "VideoAnalyticsConfigurationToken":
                 video_analytics = source.Value
             if source.Name == "Rule":
@@ -312,7 +325,7 @@ async def async_parse_dog_cat_detector(uid: str, msg) -> Event | None:
         video_source = ""
         for source in msg.Message._value_1.Source.SimpleItem:
             if source.Name == "Source":
-                video_source = source.Value
+                video_source = _normalize_video_source(source.Value)
 
         return Event(
             f"{uid}_{msg.Topic._value_1}_{video_source}",
@@ -337,7 +350,7 @@ async def async_parse_vehicle_detector(uid: str, msg) -> Event | None:
         video_source = ""
         for source in msg.Message._value_1.Source.SimpleItem:
             if source.Name == "Source":
-                video_source = source.Value
+                video_source = _normalize_video_source(source.Value)
 
         return Event(
             f"{uid}_{msg.Topic._value_1}_{video_source}",
@@ -362,7 +375,7 @@ async def async_parse_person_detector(uid: str, msg) -> Event | None:
         video_source = ""
         for source in msg.Message._value_1.Source.SimpleItem:
             if source.Name == "Source":
-                video_source = source.Value
+                video_source = _normalize_video_source(source.Value)
 
         return Event(
             f"{uid}_{msg.Topic._value_1}_{video_source}",
@@ -387,7 +400,7 @@ async def async_parse_face_detector(uid: str, msg) -> Event | None:
         video_source = ""
         for source in msg.Message._value_1.Source.SimpleItem:
             if source.Name == "Source":
-                video_source = source.Value
+                video_source = _normalize_video_source(source.Value)
 
         return Event(
             f"{uid}_{msg.Topic._value_1}_{video_source}",
@@ -412,7 +425,7 @@ async def async_parse_visitor_detector(uid: str, msg) -> Event | None:
         video_source = ""
         for source in msg.Message._value_1.Source.SimpleItem:
             if source.Name == "Source":
-                video_source = source.Value
+                video_source = _normalize_video_source(source.Value)
 
         return Event(
             f"{uid}_{msg.Topic._value_1}_{video_source}",
@@ -683,7 +696,7 @@ async def async_parse_count_aggregation_counter(uid: str, msg) -> Event | None:
         rule = ""
         for source in msg.Message._value_1.Source.SimpleItem:
             if source.Name == "VideoSourceConfigurationToken":
-                video_source = source.Value
+                video_source = _normalize_video_source(source.Value)
             if source.Name == "VideoAnalyticsConfigurationToken":
                 video_analytics = source.Value
             if source.Name == "Rule":