diff --git a/gst-libs/gst/rtsp/gstrtspconnection.c b/gst-libs/gst/rtsp/gstrtspconnection.c
index bde854c834..326d38410c 100644
--- a/gst-libs/gst/rtsp/gstrtspconnection.c
+++ b/gst-libs/gst/rtsp/gstrtspconnection.c
@@ -2751,8 +2751,8 @@ gst_rtsp_connection_set_ip (GstRTSPConnection * conn, const gchar * ip)
  *
  * Get the file descriptor for reading.
  *
- * Returns: the file descriptor used for reading or %NULL on error. The file
- * descriptor remains valid until the connection is closed.
+ * Returns: (transfer none): the file descriptor used for reading or %NULL on
+ * error. The file descriptor remains valid until the connection is closed.
  */
 GSocket *
 gst_rtsp_connection_get_read_socket (const GstRTSPConnection * conn)
@@ -2769,8 +2769,8 @@ gst_rtsp_connection_get_read_socket (const GstRTSPConnection * conn)
  *
  * Get the file descriptor for writing.
  *
- * Returns: the file descriptor used for writing or NULL on error. The file
- * descriptor remains valid until the connection is closed.
+ * Returns: (transfer none): the file descriptor used for writing or NULL on
+ * error. The file descriptor remains valid until the connection is closed.
  */
 GSocket *
 gst_rtsp_connection_get_write_socket (const GstRTSPConnection * conn)
diff --git a/gst-libs/gst/rtsp/gstrtsptransport.c b/gst-libs/gst/rtsp/gstrtsptransport.c
index 08a4e667ec..963a070df5 100644
--- a/gst-libs/gst/rtsp/gstrtsptransport.c
+++ b/gst-libs/gst/rtsp/gstrtsptransport.c
@@ -273,7 +273,7 @@ gst_rtsp_transport_get_mime (GstRTSPTransMode trans, const gchar ** mime)
 /**
  * gst_rtsp_transport_get_media_type:
  * @transport: a #GstRTSPTransport
- * @media_type: media type of @transport
+ * @media_type: (out): media type of @transport
  *
  * Get the media type of @transport. This media type is typically
  * used to generate #GstCaps events.
diff --git a/gst-libs/gst/rtsp/gstrtspurl.c b/gst-libs/gst/rtsp/gstrtspurl.c
index 654f2aa514..700ac0b9e0 100644
--- a/gst-libs/gst/rtsp/gstrtspurl.c
+++ b/gst-libs/gst/rtsp/gstrtspurl.c
@@ -393,7 +393,8 @@ unescape_path_component (gchar * comp)
  * Also note that since paths usually start with a slash, the first component
  * will usually be the empty string.
  *
- * Returns: a string vector. g_strfreev() after usage.
+ * Returns: (transfer full): %NULL-terminated array of URL components. Free with
+ * g_strfreev() when no longer needed.
  */
 gchar **
 gst_rtsp_url_decode_path_components (const GstRTSPUrl * url)
diff --git a/gst-libs/gst/video/video-format.c b/gst-libs/gst/video/video-format.c
index 6d96b5651d..69e75b8e67 100644
--- a/gst-libs/gst/video/video-format.c
+++ b/gst-libs/gst/video/video-format.c
@@ -2776,8 +2776,8 @@ gst_video_format_get_info (GstVideoFormat format)
  * Get the default palette of @format. This the palette used in the pack
  * function for paletted formats.
  *
- * Returns: the default palette of @format or %NULL when @format does not have a
- * palette.
+ * Returns: (transfer none): the default palette of @format or %NULL when
+ * @format does not have a palette.
  *
  * Since: 1.2
  */