diff --git a/components/canvas/LiblibVideoCanvasReplica.tsx b/components/canvas/LiblibVideoCanvasReplica.tsx
index d8ab6aa45..5adbd86ec 100644
--- a/components/canvas/LiblibVideoCanvasReplica.tsx
+++ b/components/canvas/LiblibVideoCanvasReplica.tsx
@@ -5375,14 +5375,54 @@ export function LiblibVideoCanvasReplica({
     };
   }, []);
 
+  const readImageIntrinsicSize = useCallback(async (file: File) => {
+    if (!file.type.startsWith("image/")) return null;
+    try {
+      const bitmap = await createImageBitmap(file);
+      const size = { width: bitmap.width, height: bitmap.height };
+      bitmap.close();
+      return size;
+    } catch {
+      try {
+        return await new Promise<{ width: number; height: number }>((resolve, reject) => {
+          const url = URL.createObjectURL(file);
+          const image = new Image();
+          image.onload = () => {
+            URL.revokeObjectURL(url);
+            resolve({ width: image.naturalWidth, height: image.naturalHeight });
+          };
+          image.onerror = () => {
+            URL.revokeObjectURL(url);
+            reject(new Error("image decode failed"));
+          };
+          image.src = url;
+        });
+      } catch {
+        return null;
+      }
+    }
+  }, []);
+
   const addUploadedFilesAtPoint = useCallback(
-    (files: File[], center: { x: number; y: number }, connectTargetId?: string) => {
+    async (files: File[], center: { x: number; y: number }, connectTargetId?: string) => {
       if (files.length === 0) return;
       const { files: batch, errors } = prepareCanvasMediaFiles(files);
       if (errors.length) toast.error(errors.slice(0, 3).join("\n"));
       if (!batch.length) return;
+      const sizes = await Promise.all(batch.map(file => readImageIntrinsicSize(file)));
       const newNodes = batch.map((file, index) => {
         const created = createUploadedMediaNode(file, "", 0, 0, nodes.length + index + 1);
+        const size = sizes[index];
+        if (size && size.width > 0 && size.height > 0) {
+          const aspect = size.width / size.height;
+          if (aspect >= 1) {
+            created.width = 420;
+            created.height = Math.min(560, Math.max(180, Math.round(420 / aspect)));
+          } else {
+            created.height = 560;
+            created.width = Math.min(420, Math.max(220, Math.round(560 * aspect)));
+          }
+        }
         return { ...created, x: Math.round(center.x - created.width / 2 + index * 450),
           y: Math.round(center.y - created.height / 2),
           draftValues: { ...created.draftValues, uploadStatus: "uploading" } };
@@ -5412,12 +5452,12 @@ export function LiblibVideoCanvasReplica({
         }
       });
     },
-    [addNodes, nodes.length, uploadCanvasMediaFile]
+    [addNodes, nodes.length, readImageIntrinsicSize, uploadCanvasMediaFile]
   );
 
   const addUploadedFiles = useCallback(
     (files: File[]) => {
-      addUploadedFilesAtPoint(files, toCanvasPoint(window.innerWidth / 2, window.innerHeight / 2));
+      void addUploadedFilesAtPoint(files, toCanvasPoint(window.innerWidth / 2, window.innerHeight / 2));
     },
     [addUploadedFilesAtPoint, toCanvasPoint]
   );
@@ -5763,7 +5803,7 @@ export function LiblibVideoCanvasReplica({
   const addCanvasCommandUploadedFiles = useCallback(
     (files: File[]) => {
       if (!canvasCommand) return;
-      addUploadedFilesAtPoint(files, { x: canvasCommand.canvasX, y: canvasCommand.canvasY });
+      void addUploadedFilesAtPoint(files, { x: canvasCommand.canvasX, y: canvasCommand.canvasY });
     },
     [addUploadedFilesAtPoint, canvasCommand]
   );
@@ -10111,7 +10151,7 @@ export function LiblibVideoCanvasReplica({
         if (isBusy) { toast.error("画布正在加载，请稍候再拖入素材"); return; }
         const files = Array.from(event.dataTransfer.files);
         if (!files.length) { toast.error("未能读取拖入的文件，请从桌面直接拖拽素材后松开"); return; }
-        addUploadedFilesAtPoint(files, toCanvasPoint(event.clientX, event.clientY));
+        void addUploadedFilesAtPoint(files, toCanvasPoint(event.clientX, event.clientY));
       }}
     >
       <div className="pointer-events-none absolute inset-0" style={{backgroundImage:"radial-gradient(circle,rgba(255,255,255,0.14) 0.7px,transparent 0.7px)",backgroundPosition:"0.5px 0.5px",backgroundSize:"16px 16px"}} />
@@ -10547,7 +10587,7 @@ export function LiblibVideoCanvasReplica({
             setNodes(current => current.map(node => node.id === selectedNode.id ? {...node,draftValues:{...node.draftValues,smartEditDraft:{...(node.draftValues?.smartEditDraft as Record<string,any> || {}),assets:((node.draftValues?.smartEditDraft as Record<string,any>)?.assets || []).filter((asset:{id:string}) => asset.id !== source)}}} : node));
           }}
           onReference={() => setLineConnectState({sourceId:null,targetId:selectedNode.id,cursorCanvasX:selectedNode.x-80,cursorCanvasY:selectedNode.y+selectedNode.height/2})}
-          onUpload={files => addUploadedFilesAtPoint(files,{x:selectedNode.x-600,y:selectedNode.y},selectedNode.id)}
+          onUpload={files => void addUploadedFilesAtPoint(files,{x:selectedNode.x-600,y:selectedNode.y},selectedNode.id)}
           onSubmit={async () => {
             assertConnectedInputsReady(selectedTargetSourceNodes);
             const draft = resolveSmartEditIntent((selectedNode.draftValues?.smartEditDraft || {}) as Record<string,any>);