diff --git a/demos/python/sdk_wireless_camera_control/docs/changelog.rst b/demos/python/sdk_wireless_camera_control/docs/changelog.rst
index 5c33ddd5..f703b586 100644
--- a/demos/python/sdk_wireless_camera_control/docs/changelog.rst
+++ b/demos/python/sdk_wireless_camera_control/docs/changelog.rst
@@ -13,6 +13,7 @@ Unreleased
 ----------
 
 * Add Setting 125
+* Don't default to hardcoded parameters for set livestream mode
 
 0.16.1 (April-23-2024)
 ----------------------
diff --git a/demos/python/sdk_wireless_camera_control/open_gopro/api/ble_commands.py b/demos/python/sdk_wireless_camera_control/open_gopro/api/ble_commands.py
index 84dc1f09..b9cbc9cc 100644
--- a/demos/python/sdk_wireless_camera_control/open_gopro/api/ble_commands.py
+++ b/demos/python/sdk_wireless_camera_control/open_gopro/api/ble_commands.py
@@ -660,22 +660,22 @@ async def set_livestream_mode(
         self,
         *,
         url: str,
-        window_size: proto.EnumWindowSize.ValueType,
         minimum_bitrate: int,
         maximum_bitrate: int,
         starting_bitrate: int,
-        lens: proto.EnumLens.ValueType,
+        window_size: proto.EnumWindowSize.ValueType | None = None,
+        lens: proto.EnumLens.ValueType | None = None,
         certs: list[Path] | None = None,
     ) -> GoProResp[None]:
         """Initiate livestream to any site that accepts an RTMP URL and simultaneously encode to camera.
 
         Args:
             url (str): url used to stream. Set to empty string to invalidate/cancel stream
-            window_size (open_gopro.api.proto.EnumWindowSize): Streaming video resolution
             minimum_bitrate (int): Desired minimum streaming bitrate (>= 800)
             maximum_bitrate (int): Desired maximum streaming bitrate (<= 8000)
             starting_bitrate (int): Initial streaming bitrate (honored if 800 <= value <= 8000)
-            lens (open_gopro.api.proto.EnumLens): Streaming Field of View
+            window_size (open_gopro.api.proto.EnumWindowSize | None): Streaming video resolution. Defaults to None (use camera default).
+            lens (open_gopro.api.proto.EnumLens): Streaming Field of View. Defaults to None (use camera default).
             certs (list[Path] | None): list of certificates to use. Defaults to None.
 
         Returns:
@@ -684,11 +684,9 @@ async def set_livestream_mode(
         d = {
             "url": url,
             "encode": True,
-            "window_size": window_size,
             "minimum_bitrate": minimum_bitrate,
             "maximum_bitrate": maximum_bitrate,
             "starting_bitrate": starting_bitrate,
-            "lens": lens,
         }
         if certs:
             cert_buf = bytearray()
@@ -698,6 +696,10 @@ async def set_livestream_mode(
 
             cert_buf.pop()
             d["cert"] = bytes(cert_buf)
+        if lens:
+            d["lens"] = lens
+        if window_size:
+            d["window_size"] = window_size
         return d  # type: ignore
 
     @ble_proto_command(
diff --git a/demos/python/sdk_wireless_camera_control/open_gopro/demos/gui/livestream.py b/demos/python/sdk_wireless_camera_control/open_gopro/demos/gui/livestream.py
index a67a6b44..bacbeeb8 100644
--- a/demos/python/sdk_wireless_camera_control/open_gopro/demos/gui/livestream.py
+++ b/demos/python/sdk_wireless_camera_control/open_gopro/demos/gui/livestream.py
@@ -73,15 +73,8 @@ def parse_arguments() -> argparse.Namespace:
     parser.add_argument("--min_bit", type=int, help="Minimum bitrate.", default=1000)
     parser.add_argument("--max_bit", type=int, help="Maximum bitrate.", default=1000)
     parser.add_argument("--start_bit", type=int, help="Starting bitrate.", default=1000)
-    parser.add_argument(
-        "--resolution",
-        help="Resolution.",
-        choices=list(proto.EnumWindowSize.values()),
-        default=proto.EnumWindowSize.WINDOW_SIZE_720,
-    )
-    parser.add_argument(
-        "--fov", help="Field of View.", choices=list(proto.EnumLens.values()), default=proto.EnumLens.LENS_LINEAR
-    )
+    parser.add_argument("--resolution", help="Resolution.", choices=list(proto.EnumWindowSize.values()), default=None)
+    parser.add_argument("--fov", help="Field of View.", choices=list(proto.EnumLens.values()), default=None)
     return add_cli_args_and_parse(parser, wifi=False)