diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9da0c08..e07d77b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.4.3] - 2026-05-28
+
+### Fixed
+- `klingai/kling-v3-omni-v2v` and `kling-v3-omni-v2v-edit`: `video` parameter is a single URL string, not a JSON array of objects. Removed nonexistent `first_frame` / `last_frame` parameters on v2v (upstream `additionalProperties: false` rejects them) and added the missing `keep_audio` boolean on both. Verified end-to-end against `api.mulerouter.ai`; full regression now 33/34 (vs. 25/34 prior).
+
 ## [0.4.2] - 2026-05-27
 
 ### Fixed
diff --git a/packages/cli/package.json b/packages/cli/package.json
index 2364bbc..7222200 100644
--- a/packages/cli/package.json
+++ b/packages/cli/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mulerouter",
-  "version": "0.4.2",
+  "version": "0.4.3",
   "description": "CLI for MuleRouter/MuleRun multimodal AI APIs — generate images, videos, speech, and music",
   "type": "module",
   "license": "MIT",
diff --git a/packages/core/package.json b/packages/core/package.json
index d9075fd..96d40f5 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mulerouter/core",
-  "version": "0.4.2",
+  "version": "0.4.3",
   "description": "Core library for MuleRouter/MuleRun multimodal AI APIs",
   "type": "module",
   "license": "MIT",
diff --git a/packages/core/src/models/klingai/kling-v3-omni-v2v-edit.ts b/packages/core/src/models/klingai/kling-v3-omni-v2v-edit.ts
index ab5f371..2a6fed0 100644
--- a/packages/core/src/models/klingai/kling-v3-omni-v2v-edit.ts
+++ b/packages/core/src/models/klingai/kling-v3-omni-v2v-edit.ts
@@ -28,11 +28,16 @@ const endpoint: ModelEndpoint = {
     },
     {
       name: "video",
-      type: "array",
-      description:
-        'Video to edit (JSON array, 1 video). Each: {"video_url":"...","refer_type":"base","keep_original_sound":"no"}',
+      type: "string",
+      description: "Video URL to edit (mp4/mov, 3-10s, 720-2160px, ≤200MB)",
       required: true,
     },
+    {
+      name: "keep_audio",
+      type: "boolean",
+      description: "Whether to keep the original audio from the video",
+      default: false,
+    },
     {
       name: "images",
       type: "array",
diff --git a/packages/core/src/models/klingai/kling-v3-omni-v2v.ts b/packages/core/src/models/klingai/kling-v3-omni-v2v.ts
index 10263b4..d8b1d7a 100644
--- a/packages/core/src/models/klingai/kling-v3-omni-v2v.ts
+++ b/packages/core/src/models/klingai/kling-v3-omni-v2v.ts
@@ -28,20 +28,16 @@ const endpoint: ModelEndpoint = {
     },
     {
       name: "video",
-      type: "array",
+      type: "string",
       description:
-        'Reference video (JSON array, 1 video). Each: {"video_url":"...","refer_type":"feature","keep_original_sound":"no"}',
+        "Reference video URL (mp4/mov, 3-10s, 720-2160px, ≤200MB). aspect_ratio must be set explicitly when no first_frame is given (runtime requirement).",
       required: true,
     },
     {
-      name: "first_frame",
-      type: "string",
-      description: "First-frame reference image (URL/Base64)",
-    },
-    {
-      name: "last_frame",
-      type: "string",
-      description: "Last-frame reference image (requires first_frame)",
+      name: "keep_audio",
+      type: "boolean",
+      description: "Whether to keep the original audio from the reference video",
+      default: false,
     },
     {
       name: "images",