fix: 修复图片bug

src/components/TemplateCard/index.css

@@ -171,11 +171,21 @@
   backface-visibility: hidden;
 }
 
-/* 确保video的poster填满整个容器 */
-.single-video[poster] {
-  background-size: cover !important;
-  background-position: center !important;
-  background-repeat: no-repeat !important;
+/* 自定义视频封面 */
+.video-poster {
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
+  z-index: 1;
+  object-fit: cover;
+  border-radius: 32rpx;
+}
+
+.single-video {
+  position: relative;
+  z-index: 2;
 }
 
 /* 视频样式 */

src/components/TemplateCard/index.tsx

@@ -83,10 +83,14 @@ export default function TemplateCard({ template, onClick }: TemplateCardProps) {
       {isOutputVideo ? (
         // 当output是视频时，只显示单个视频
         <View className='single-video-container'>
+          <Image 
+            className='video-poster'
+            src={template.inputExample}
+            mode='aspectFill'
+          />
           <Video
             className='single-video'
             src={template.outputExample}
-            poster={template.inputExample} // 使用input作为视频缩略图
             autoplay
             muted
             loop