diff --git a/subprojects/gst-plugins-bad/gst-libs/gst/vulkan/gstvkvideoutils.h b/subprojects/gst-plugins-bad/gst-libs/gst/vulkan/gstvkvideoutils.h
index e1f37e3c0f..07edc245cc 100644
--- a/subprojects/gst-plugins-bad/gst-libs/gst/vulkan/gstvkvideoutils.h
+++ b/subprojects/gst-plugins-bad/gst-libs/gst/vulkan/gstvkvideoutils.h
@@ -39,6 +39,11 @@ struct _GstVulkanVideoProfile
   VkVideoProfileInfoKHR profile;
   union {
     VkVideoDecodeUsageInfoKHR decode;
+    /**
+     * GstVulkanVideoProfile.usage.encode:
+     *
+     * Since: 1.26
+     **/
     VkVideoEncodeUsageInfoKHR encode;
   } usage;
 
@@ -46,7 +51,17 @@ struct _GstVulkanVideoProfile
     VkBaseInStructure base;
     VkVideoDecodeH264ProfileInfoKHR h264dec;
     VkVideoDecodeH265ProfileInfoKHR h265dec;
+    /**
+     * GstVulkanVideoProfile.usage.codec.h264enc:
+     *
+     * Since: 1.26
+     **/
     VkVideoEncodeH264ProfileInfoKHR h264enc;
+    /**
+     * GstVulkanVideoProfile.usage.codec.h265enc:
+     *
+     * Since: 1.26
+     **/
     VkVideoEncodeH265ProfileInfoKHR h265enc;
   } codec;
 #endif
@@ -68,7 +83,17 @@ struct _GstVulkanVideoCapabilities
     VkBaseInStructure base;
     VkVideoDecodeH264CapabilitiesKHR h264dec;
     VkVideoDecodeH265CapabilitiesKHR h265dec;
+    /**
+     * GstVulkanVideoCapabilities.codec.h264enc:
+     *
+     * Since: 1.26
+     */
     VkVideoEncodeH264CapabilitiesKHR h264enc;
+    /**
+     * GstVulkanVideoCapabilities.codec.h265enc:
+     *
+     * Since: 1.26
+     */
     VkVideoEncodeH265CapabilitiesKHR h265enc;
   } codec;
 #endif