diff --git a/api/api_specification.json b/api/api_specification.json
index 5e4a0d80edca959982241d082fdca06a6fea1d1c..c9dc81f5c6959f6e483f60992de67b7e44268038 100644
--- a/api/api_specification.json
+++ b/api/api_specification.json
@@ -3057,7 +3057,17 @@
             "type": "int"
           }
         },
-        "media_process": {},
+        "media_process": {
+          "may_be_null": {
+            "config_directly_modifiable": false,
+            "id": "may_be_null",
+            "notes": "",
+            "object_variant": "media_process",
+            "only_mod": false,
+            "optional": false,
+            "type": "boolean"
+          }
+        },
         "object": {
           "may_be_null": {
             "config_directly_modifiable": false,
diff --git a/api/api_specification.md b/api/api_specification.md
index 26849cea989d8b17b43a30ad4c21ae51771ed6bb..b26b976cd71054746922392a2aaadfd1a1f3a220 100644
--- a/api/api_specification.md
+++ b/api/api_specification.md
@@ -1,4 +1,4 @@
-# Specification of the Web API for the Video-AG Website (v0.79).
+# Specification of the Web API for the Video-AG Website (v0.80).
 
 ## Introduction
 
@@ -2262,7 +2262,12 @@ Additionally, the following objects may appear as the type of some field:
         <td>?int</td>
         <td></td>
     </tr>
-    <tr><td><code>media_process</code></td></tr>
+    <tr>
+        <td rowspan="1"><code>media_process</code></td>
+        <td>may_be_null</td>
+        <td>boolean</td>
+        <td></td>
+    </tr>
     <tr>
         <td rowspan="2"><code>object</code></td>
         <td>may_be_null</td>
@@ -3183,6 +3188,11 @@ Possible `error_code`:
 
 ## Changelog
 
+### v0.80
+
+* Updated `field_description`
+  * Added `may_be_null` for type `media_process`
+
 ### 0.79
 
 * Added `POST /job/status`
diff --git a/api/api_specification_template.md b/api/api_specification_template.md
index b0ae25c32d33cfeb89f1bafcb7b89b948a529553..2098757462a0a1311a039a4ac16a51e9938a292b 100644
--- a/api/api_specification_template.md
+++ b/api/api_specification_template.md
@@ -1,4 +1,4 @@
-# Specification of the Web API for the Video-AG Website (v0.79).
+# Specification of the Web API for the Video-AG Website (v0.80).
 
 ## Introduction
 
@@ -139,6 +139,11 @@ Possible `error_code`:
 
 ## Changelog
 
+### v0.80
+
+* Updated `field_description`
+  * Added `may_be_null` for type `media_process`
+
 ### 0.79
 
 * Added `POST /job/status`
diff --git a/common_py/src/videoag_common/media_process/media_process.py b/common_py/src/videoag_common/media_process/media_process.py
index 354a9489626810b2eae54f5e3133387eac8cc908..debcf5de2d2f5588244673ced6a288decaa81dfb 100644
--- a/common_py/src/videoag_common/media_process/media_process.py
+++ b/common_py/src/videoag_common/media_process/media_process.py
@@ -1,5 +1,5 @@
 from collections.abc import Iterable
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, Any
 
 from videoag_common.miscellaneous import *
 from videoag_common.database import *
@@ -99,11 +99,19 @@ class MediaProcess(JsonDataClass):
         return self._hash
 
 
+class MediaProcessFieldDescription(ApiFieldDescription):
+    may_be_null: bool
+    
+    @classmethod
+    def get_type(cls) -> str:
+        return "media_process"
+
+
 class ApiMediaProcessField[_O: ApiObject](ApiSimpleColumnField[_O]):
     
     @classmethod
     def _get_description_class_or_type(cls) -> ApiFieldDescription or str:
-        return "media_process"
+        return MediaProcessFieldDescription
     
     def post_init_check(self, context: FieldContext):
         super().post_init_check(context)
@@ -114,6 +122,11 @@ class ApiMediaProcessField[_O: ApiObject](ApiSimpleColumnField[_O]):
     @property
     def may_be_none_allowed_for_config_fields(self) -> bool:
         return True
+
+    def _config_get_description_kwargs(self) -> dict[str, Any]:
+        return super()._config_get_description_kwargs() | {
+            "may_be_null": self.may_be_none
+        }
     
     def _db_value_to_json(self, db_value) -> JsonTypes:
         return db_value