Fix I2V check to verify pipeline class supports image input

- LTXPipeline is T2V-only, not I2V-capable
- Check both supports_i2v flag AND pipeline class name
- I2V-capable pipelines: StableVideoDiffusionPipeline, I2VGenXLPipeline, LTXImageToVideoPipeline, WanPipeline
- Prevents passing 'image' argument to T2V-only pipelines like LTXPipeline

videogen

@@ -8843,10 +8843,16 @@ def main(args):
             }
 
             if (args.image_to_video or args.image) and init_image is not None:
-                if m_info.get("supports_i2v"):
+                # Check if the pipeline class actually supports image input
+                # I2V-capable pipelines: StableVideoDiffusionPipeline, I2VGenXLPipeline, LTXImageToVideoPipeline, WanPipeline (with I2V variant)
+                # T2V-only pipelines: LTXPipeline, MochiPipeline, CogVideoXPipeline, etc.
+                pipeline_class_name = PipelineClass.__name__ if hasattr(PipelineClass, '__name__') else str(PipelineClass)
+                i2v_pipelines = ['StableVideoDiffusionPipeline', 'I2VGenXLPipeline', 'LTXImageToVideoPipeline', 'WanPipeline']
+                
+                if m_info.get("supports_i2v") and pipeline_class_name in i2v_pipelines:
                     video_kwargs["image"] = init_image
                 else:
-                    print(f"Warning: {args.model} does not support 'image' argument – running pure T2V")
+                    print(f"Warning: {args.model} ({pipeline_class_name}) does not support 'image' argument – running pure T2V")
 
             output = pipe(**video_kwargs)