diff --git a/src/main/java/com/google/genai/Models.java b/src/main/java/com/google/genai/Models.java
index d4ad7780b51..595dbbb55b5 100644
--- a/src/main/java/com/google/genai/Models.java
+++ b/src/main/java/com/google/genai/Models.java
@@ -2606,6 +2606,10 @@ ObjectNode generateVideosConfigToMldev(
       throw new IllegalArgumentException("labels parameter is not supported in Gemini API.");
     }
 
+    if (!Common.isZero(Common.getValueByPath(fromObject, new String[] {"resizeMode"}))) {
+      throw new IllegalArgumentException("resizeMode parameter is not supported in Gemini API.");
+    }
+
     return toObject;
   }
 
@@ -2747,6 +2751,13 @@ ObjectNode generateVideosConfigToVertex(
           Common.getValueByPath(fromObject, new String[] {"labels"}));
     }
 
+    if (Common.getValueByPath(fromObject, new String[] {"resizeMode"}) != null) {
+      Common.setValueByPath(
+          parentObject,
+          new String[] {"parameters", "resizeMode"},
+          Common.getValueByPath(fromObject, new String[] {"resizeMode"}));
+    }
+
     return toObject;
   }
 
diff --git a/src/main/java/com/google/genai/types/GenerateVideosConfig.java b/src/main/java/com/google/genai/types/GenerateVideosConfig.java
index 3cf73799ac0..15f2577612a 100644
--- a/src/main/java/com/google/genai/types/GenerateVideosConfig.java
+++ b/src/main/java/com/google/genai/types/GenerateVideosConfig.java
@@ -124,6 +124,10 @@ public abstract class GenerateVideosConfig extends JsonSerializable {
   @JsonProperty("labels")
   public abstract Optional<Map<String, String>> labels();
 
+  /** Resize mode of the image input for video generation. */
+  @JsonProperty("resizeMode")
+  public abstract Optional<ImageResizeMode> resizeMode();
+
   /** Instantiates a builder for GenerateVideosConfig. */
   @ExcludeFromGeneratedCoverageReport
   public static Builder builder() {
@@ -555,6 +559,44 @@ public Builder clearLabels() {
       return labels(Optional.empty());
     }
 
+    /**
+     * Setter for resizeMode.
+     *
+     * <p>resizeMode: Resize mode of the image input for video generation.
+     */
+    @JsonProperty("resizeMode")
+    public abstract Builder resizeMode(ImageResizeMode resizeMode);
+
+    @ExcludeFromGeneratedCoverageReport
+    abstract Builder resizeMode(Optional<ImageResizeMode> resizeMode);
+
+    /** Clears the value of resizeMode field. */
+    @ExcludeFromGeneratedCoverageReport
+    @CanIgnoreReturnValue
+    public Builder clearResizeMode() {
+      return resizeMode(Optional.empty());
+    }
+
+    /**
+     * Setter for resizeMode given a known enum.
+     *
+     * <p>resizeMode: Resize mode of the image input for video generation.
+     */
+    @CanIgnoreReturnValue
+    public Builder resizeMode(ImageResizeMode.Known knownType) {
+      return resizeMode(new ImageResizeMode(knownType));
+    }
+
+    /**
+     * Setter for resizeMode given a string.
+     *
+     * <p>resizeMode: Resize mode of the image input for video generation.
+     */
+    @CanIgnoreReturnValue
+    public Builder resizeMode(String resizeMode) {
+      return resizeMode(new ImageResizeMode(resizeMode));
+    }
+
     public abstract GenerateVideosConfig build();
   }
 
diff --git a/src/main/java/com/google/genai/types/ImageResizeMode.java b/src/main/java/com/google/genai/types/ImageResizeMode.java
new file mode 100644
index 00000000000..aff4502fa7f
--- /dev/null
+++ b/src/main/java/com/google/genai/types/ImageResizeMode.java
@@ -0,0 +1,116 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Auto-generated code. Do not edit.
+
+package com.google.genai.types;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.google.common.base.Ascii;
+import java.util.Objects;
+
+/** Resize mode for the image input for video generation. */
+public class ImageResizeMode {
+
+  /** Enum representing the known values for ImageResizeMode. */
+  public enum Known {
+    /**
+     * Crop the image to fit the correct aspect ratio (so we lose parts of the image in the
+     * process).
+     */
+    CROP,
+
+    /**
+     * Pad the image to fit the correct aspect ratio (so we don't lose any parts of the image in the
+     * process).
+     */
+    PAD,
+
+    IMAGE_RESIZE_MODE_UNSPECIFIED
+  }
+
+  private Known imageResizeModeEnum;
+  private final String value;
+
+  @JsonCreator
+  public ImageResizeMode(String value) {
+    this.value = value;
+    for (Known imageResizeModeEnum : Known.values()) {
+      if (Ascii.equalsIgnoreCase(imageResizeModeEnum.toString(), value)) {
+        this.imageResizeModeEnum = imageResizeModeEnum;
+        break;
+      }
+    }
+    if (this.imageResizeModeEnum == null) {
+      this.imageResizeModeEnum = Known.IMAGE_RESIZE_MODE_UNSPECIFIED;
+    }
+  }
+
+  public ImageResizeMode(Known knownValue) {
+    this.imageResizeModeEnum = knownValue;
+    this.value = knownValue.toString();
+  }
+
+  @ExcludeFromGeneratedCoverageReport
+  @Override
+  @JsonValue
+  public String toString() {
+    return this.value;
+  }
+
+  @ExcludeFromGeneratedCoverageReport
+  @SuppressWarnings("PatternMatchingInstanceof")
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null) {
+      return false;
+    }
+
+    if (!(o instanceof ImageResizeMode)) {
+      return false;
+    }
+
+    ImageResizeMode other = (ImageResizeMode) o;
+
+    if (this.imageResizeModeEnum != Known.IMAGE_RESIZE_MODE_UNSPECIFIED
+        && other.imageResizeModeEnum != Known.IMAGE_RESIZE_MODE_UNSPECIFIED) {
+      return this.imageResizeModeEnum == other.imageResizeModeEnum;
+    } else if (this.imageResizeModeEnum == Known.IMAGE_RESIZE_MODE_UNSPECIFIED
+        && other.imageResizeModeEnum == Known.IMAGE_RESIZE_MODE_UNSPECIFIED) {
+      return this.value.equals(other.value);
+    }
+    return false;
+  }
+
+  @ExcludeFromGeneratedCoverageReport
+  @Override
+  public int hashCode() {
+    if (this.imageResizeModeEnum != Known.IMAGE_RESIZE_MODE_UNSPECIFIED) {
+      return this.imageResizeModeEnum.hashCode();
+    } else {
+      return Objects.hashCode(this.value);
+    }
+  }
+
+  @ExcludeFromGeneratedCoverageReport
+  public Known knownEnum() {
+    return this.imageResizeModeEnum;
+  }
+}