feat(transcoder): update the API

#### transcoder:v1

The following keys were added:
- schemas.Input.properties.attributes.$ref
- schemas.Input.properties.attributes.description
- schemas.InputAttributes.description
- schemas.InputAttributes.id
- schemas.InputAttributes.properties.trackDefinitions.description
- schemas.InputAttributes.properties.trackDefinitions.items.$ref
- schemas.InputAttributes.properties.trackDefinitions.type
- schemas.InputAttributes.type
- schemas.TrackDefinition.description
- schemas.TrackDefinition.id
- schemas.TrackDefinition.properties.detectLanguages.description
- schemas.TrackDefinition.properties.detectLanguages.type
- schemas.TrackDefinition.properties.detectedLanguages.description
- schemas.TrackDefinition.properties.detectedLanguages.items.type
- schemas.TrackDefinition.properties.detectedLanguages.readOnly
- schemas.TrackDefinition.properties.detectedLanguages.type
- schemas.TrackDefinition.properties.inputTrack.description
- schemas.TrackDefinition.properties.inputTrack.format
- schemas.TrackDefinition.properties.inputTrack.type
- schemas.TrackDefinition.properties.languages.description
- schemas.TrackDefinition.properties.languages.items.type
- schemas.TrackDefinition.properties.languages.type
- schemas.TrackDefinition.type

Author: yoshi-automation

discovery/transcoder-v1.json

@@ -385,7 +385,7 @@
       }
     }
   },
-  "revision": "20250630",
+  "revision": "20250723",
   "rootUrl": "https://transcoder.googleapis.com/",
   "schemas": {
     "AdBreak": {
@@ -1155,6 +1155,10 @@
       "description": "Input asset.",
       "id": "Input",
       "properties": {
+        "attributes": {
+          "$ref": "InputAttributes",
+          "description": "Optional. Input Attributes."
+        },
         "key": {
           "description": "A unique key for this input. Must be specified when using advanced mapping and edit lists.",
           "type": "string"
@@ -1170,6 +1174,20 @@
       },
       "type": "object"
     },
+    "InputAttributes": {
+      "description": "Input attributes that provide additional information about the input asset.",
+      "id": "InputAttributes",
+      "properties": {
+        "trackDefinitions": {
+          "description": "Optional. A list of track definitions for the input asset.",
+          "items": {
+            "$ref": "TrackDefinition"
+          },
+          "type": "array"
+        }
+      },
+      "type": "object"
+    },
     "Job": {
       "description": "Transcoding job resource.",
       "id": "Job",
@@ -1814,6 +1832,37 @@
       },
       "type": "object"
     },
+    "TrackDefinition": {
+      "description": "Track definition for the input asset.",
+      "id": "TrackDefinition",
+      "properties": {
+        "detectLanguages": {
+          "description": "Optional. Whether to automatically detect the languages present in the track. If true, the system will attempt to identify all the languages present in the track and populate the languages field.",
+          "type": "boolean"
+        },
+        "detectedLanguages": {
+          "description": "Output only. A list of languages detected in the input asset, represented by a BCP 47 language code, such as \"en-US\" or \"sr-Latn\". For more information, see https://www.unicode.org/reports/tr35/#Unicode_locale_identifier. This field is only populated if the detect_languages field is set to true.",
+          "items": {
+            "type": "string"
+          },
+          "readOnly": true,
+          "type": "array"
+        },
+        "inputTrack": {
+          "description": "The input track.",
+          "format": "int32",
+          "type": "integer"
+        },
+        "languages": {
+          "description": "Optional. A list of languages spoken in the input asset, represented by a BCP 47 language code, such as \"en-US\" or \"sr-Latn\". For more information, see https://www.unicode.org/reports/tr35/#Unicode_locale_identifier.",
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        }
+      },
+      "type": "object"
+    },
     "VideoStream": {
       "description": "Video stream resource.",
       "id": "VideoStream",

src/apis/transcoder/v1.ts

@@ -731,6 +731,10 @@ export namespace transcoder_v1 {
    * Input asset.
    */
   export interface Schema$Input {
+    /**
+     * Optional. Input Attributes.
+     */
+    attributes?: Schema$InputAttributes;
     /**
      * A unique key for this input. Must be specified when using advanced mapping and edit lists.
      */
@@ -744,6 +748,15 @@ export namespace transcoder_v1 {
      */
     uri?: string | null;
   }
+  /**
+   * Input attributes that provide additional information about the input asset.
+   */
+  export interface Schema$InputAttributes {
+    /**
+     * Optional. A list of track definitions for the input asset.
+     */
+    trackDefinitions?: Schema$TrackDefinition[];
+  }
   /**
    * Transcoding job resource.
    */
@@ -1208,6 +1221,27 @@ export namespace transcoder_v1 {
      */
     mapping?: Schema$TextMapping[];
   }
+  /**
+   * Track definition for the input asset.
+   */
+  export interface Schema$TrackDefinition {
+    /**
+     * Output only. A list of languages detected in the input asset, represented by a BCP 47 language code, such as "en-US" or "sr-Latn". For more information, see https://www.unicode.org/reports/tr35/#Unicode_locale_identifier. This field is only populated if the detect_languages field is set to true.
+     */
+    detectedLanguages?: string[] | null;
+    /**
+     * Optional. Whether to automatically detect the languages present in the track. If true, the system will attempt to identify all the languages present in the track and populate the languages field.
+     */
+    detectLanguages?: boolean | null;
+    /**
+     * The input track.
+     */
+    inputTrack?: number | null;
+    /**
+     * Optional. A list of languages spoken in the input asset, represented by a BCP 47 language code, such as "en-US" or "sr-Latn". For more information, see https://www.unicode.org/reports/tr35/#Unicode_locale_identifier.
+     */
+    languages?: string[] | null;
+  }
   /**
    * Video stream resource.
    */