Fix: add required character_orientation param to Kling Motion API call

src/content_engine/api/routes_video.py

@@ -278,6 +278,8 @@ async def generate_kling_motion(
     job_id = str(uuid.uuid4())[:8]
     seed = seed if seed >= 0 else random.randint(0, 2**32 - 1)
 
+    character_orientation: str = Form("image"),
+
     image_bytes = await image.read()
     video_bytes = await driving_video.read()
 
@@ -290,7 +292,7 @@ async def generate_kling_motion(
         "message": "Uploading files...",
     }
 
-    asyncio.create_task(_generate_kling_motion_video(job_id, image_bytes, video_bytes, prompt, duration))
+    asyncio.create_task(_generate_kling_motion_video(job_id, image_bytes, video_bytes, prompt, duration, character_orientation))
 
     return {"job_id": job_id, "status": "running", "estimated_time": "~60-120 seconds"}
 
@@ -301,6 +303,7 @@ async def _generate_kling_motion_video(
     video_bytes: bytes,
     prompt: str,
     duration: int,
+    character_orientation: str = "image",
 ):
     """Background task: upload image + driving video, call Kling Motion Control API."""
     import httpx
@@ -323,6 +326,7 @@ async def _generate_kling_motion_video(
             "video": video_url,
             "prompt": prompt,
             "duration": duration,
+            "character_orientation": character_orientation,
             "enable_sync_mode": False,
         }
 

src/content_engine/api/ui.html

@@ -1138,6 +1138,12 @@ select { cursor: pointer; }
               </div>
               <input type="file" id="kling-motion-video-input" accept="video/*" style="display:none" onchange="handleKlingMotionVideo(this)">
 
+              <label style="margin-top:10px">Orientation</label>
+              <select id="kling-motion-orientation">
+                <option value="image" selected>Match image framing</option>
+                <option value="video">Match video framing (up to 30s)</option>
+              </select>
+
               <label style="margin-top:10px">Duration</label>
               <select id="kling-motion-duration">
                 <option value="5" selected>5s (~$0.56)</option>
@@ -2538,6 +2544,7 @@ async function doGenerate() {
         formData.append('driving_video', klingMotionVideoFile);
         formData.append('prompt', document.getElementById('gen-positive').value || 'smooth motion, high quality video');
         formData.append('duration', document.getElementById('kling-motion-duration').value || '5');
+        formData.append('character_orientation', document.getElementById('kling-motion-orientation').value || 'image');
         formData.append('seed', document.getElementById('gen-seed').value || '-1');
         const res = await fetch(API + '/api/video/generate/kling-motion', { method: 'POST', body: formData });
         const data = await res.json();