diff --git a/CloudBuilder/CloudBuilder.Master.Service/DmsFileService.auto.cs b/CloudBuilder/CloudBuilder.Master.Service/DmsFileService.auto.cs
index 79512cf..6a3f6f1 100644
--- a/CloudBuilder/CloudBuilder.Master.Service/DmsFileService.auto.cs
+++ b/CloudBuilder/CloudBuilder.Master.Service/DmsFileService.auto.cs
@@ -1456,6 +1456,14 @@ namespace CloudBuilder.Master.Service
                     {
                         ImageToScare(fullName, dmsFile);
                     }
+                    else if (FileTypePolicy.GetType(fileExtension.ToLower()) == FileTypePolicy.VIDEO)
+                    {
+                        // 单片上传（小文件、App 端整文件不分片）也要出视频封面：走与多片合并分支同一条链，
+                        // 截图落在备份目录里的同名 .jpg（前端宫格/详情封面读的就是这个文件），
+                        // 否则只有被切成多片的视频有封面，小视频上传后永远是黑块
+                        dmsFile.TranscodeIndc = YesNoPolicy.YES;
+                        TsToM3u8(dmsFile.OrderKey, backupName, backupName.Replace(fileExtension, FileTypePolicy.JPG));
+                    }
                 }
                 else//合并文件
                 {
diff --git a/CloudBuilder/CloudBuilder.Web.Entry/Properties/PublishProfiles/FolderProfile3.pubxml.user b/CloudBuilder/CloudBuilder.Web.Entry/Properties/PublishProfiles/FolderProfile3.pubxml.user
index 7e78ab0..82c436f 100644
--- a/CloudBuilder/CloudBuilder.Web.Entry/Properties/PublishProfiles/FolderProfile3.pubxml.user
+++ b/CloudBuilder/CloudBuilder.Web.Entry/Properties/PublishProfiles/FolderProfile3.pubxml.user
@@ -3,7 +3,7 @@
 <Project>
   <PropertyGroup>
     <_PublishTargetUrl>C:\inetpub\wwwroot\dockwebapi2</_PublishTargetUrl>
-    <History>True|2026-10-20T07:45:39.3393674Z||;True|2026-10-17T20:49:21.0401213+08:00||;True|2026-09-23T13:19:13.0148919+08:00||;True|2026-09-23T13:16:07.8584304+08:00||;True|2026-09-22T23:03:13.6509491+08:00||;True|2026-09-22T16:07:15.9177123+08:00||;True|2026-09-22T11:19:19.6087109+08:00||;True|2026-09-22T11:09:24.9165065+08:00||;True|2026-09-21T22:40:07.1232044+08:00||;True|2026-09-21T22:35:06.9446571+08:00||;True|2026-09-21T22:27:42.1146825+08:00||;False|2026-09-21T22:27:17.6066573+08:00||;True|2026-09-21T21:01:22.8888913+08:00||;True|2026-09-21T19:15:03.4753747+08:00||;True|2026-09-21T18:08:30.0866986+08:00||;True|2026-09-21T16:51:19.8137872+08:00||;True|2026-09-21T16:30:01.0950896+08:00||;True|2026-09-21T15:09:00.2326737+08:00||;True|2026-09-21T14:47:09.6120256+08:00||;True|2026-09-21T14:16:35.3194409+08:00||;True|2026-09-21T13:54:58.2829712+08:00||;True|2026-09-21T13:36:45.3134499+08:00||;True|2026-09-19T09:48:52.0085130+08:00||;False|2026-09-19T09:47:56.1658214+08:00||;True|2026-09-17T18:50:15.9493380+08:00||;True|2026-09-17T18:11:11.5364547+08:00||;True|2026-09-17T18:07:27.7830758+08:00||;True|2026-09-17T17:58:16.5798560+08:00||;True|2026-09-17T15:37:30.9025614+08:00||;True|2026-09-17T15:25:46.9116292+08:00||;True|2026-09-17T15:05:18.6592403+08:00||;True|2026-09-17T14:57:28.7997437+08:00||;True|2026-09-17T14:36:00.6339386+08:00||;True|2026-09-17T13:56:43.2376873+08:00||;True|2026-09-16T13:56:51.8724546+08:00||;True|2026-09-15T20:44:46.6559899+08:00||;True|2026-09-13T19:02:59.5654245+08:00||;True|2026-09-10T09:14:56.2914193+08:00||;True|2026-09-09T16:40:16.6461154+08:00||;True|2026-09-08T13:55:23.1502435+08:00||;True|2026-09-08T08:04:53.4279263+08:00||;True|2026-09-07T08:48:17.4682304+08:00||;True|2026-09-04T14:39:08.7878670+08:00||;True|2026-09-04T14:35:48.2937877+08:00||;True|2026-09-04T11:45:16.1372876+08:00||;True|2026-09-04T11:42:59.9356436+08:00||;True|2026-09-03T16:05:52.5270232+08:00||;True|2026-09-03T14:52:56.8559144+08:00||;True|2026-09-02T11:08:23.8720038+08:00||;True|2026-09-02T10:58:16.8081797+08:00||;True|2026-08-26T13:34:12.3805892+08:00||;True|2026-08-25T08:31:30.7787234+08:00||;True|2026-08-20T13:10:46.4725468+08:00||;True|2026-08-20T13:10:28.3142576+08:00||;True|2026-08-19T16:10:27.3362887+08:00||;True|2026-08-19T16:01:12.6234971+08:00||;True|2026-08-19T15:42:46.6576265+08:00||;True|2026-08-19T13:39:59.9363522+08:00||;True|2026-08-19T13:36:53.0379313+08:00||;True|2026-08-19T13:31:36.0841398+08:00||;True|2026-08-19T11:44:37.5319626+08:00||;True|2026-08-19T09:36:45.6000047+08:00||;True|2026-08-19T09:34:36.8468631+08:00||;True|2026-08-19T08:35:41.2202300+08:00||;True|2026-08-18T16:20:59.0170916+08:00||;</History>
+    <History>True|2026-10-21T13:22:01.1456473Z||;True|2026-10-20T15:45:39.3393674+08:00||;True|2026-10-17T20:49:21.0401213+08:00||;True|2026-09-23T13:19:13.0148919+08:00||;True|2026-09-23T13:16:07.8584304+08:00||;True|2026-09-22T23:03:13.6509491+08:00||;True|2026-09-22T16:07:15.9177123+08:00||;True|2026-09-22T11:19:19.6087109+08:00||;True|2026-09-22T11:09:24.9165065+08:00||;True|2026-09-21T22:40:07.1232044+08:00||;True|2026-09-21T22:35:06.9446571+08:00||;True|2026-09-21T22:27:42.1146825+08:00||;False|2026-09-21T22:27:17.6066573+08:00||;True|2026-09-21T21:01:22.8888913+08:00||;True|2026-09-21T19:15:03.4753747+08:00||;True|2026-09-21T18:08:30.0866986+08:00||;True|2026-09-21T16:51:19.8137872+08:00||;True|2026-09-21T16:30:01.0950896+08:00||;True|2026-09-21T15:09:00.2326737+08:00||;True|2026-09-21T14:47:09.6120256+08:00||;True|2026-09-21T14:16:35.3194409+08:00||;True|2026-09-21T13:54:58.2829712+08:00||;True|2026-09-21T13:36:45.3134499+08:00||;True|2026-09-19T09:48:52.0085130+08:00||;False|2026-09-19T09:47:56.1658214+08:00||;True|2026-09-17T18:50:15.9493380+08:00||;True|2026-09-17T18:11:11.5364547+08:00||;True|2026-09-17T18:07:27.7830758+08:00||;True|2026-09-17T17:58:16.5798560+08:00||;True|2026-09-17T15:37:30.9025614+08:00||;True|2026-09-17T15:25:46.9116292+08:00||;True|2026-09-17T15:05:18.6592403+08:00||;True|2026-09-17T14:57:28.7997437+08:00||;True|2026-09-17T14:36:00.6339386+08:00||;True|2026-09-17T13:56:43.2376873+08:00||;True|2026-09-16T13:56:51.8724546+08:00||;True|2026-09-15T20:44:46.6559899+08:00||;True|2026-09-13T19:02:59.5654245+08:00||;True|2026-09-10T09:14:56.2914193+08:00||;True|2026-09-09T16:40:16.6461154+08:00||;True|2026-09-08T13:55:23.1502435+08:00||;True|2026-09-08T08:04:53.4279263+08:00||;True|2026-09-07T08:48:17.4682304+08:00||;True|2026-09-04T14:39:08.7878670+08:00||;True|2026-09-04T14:35:48.2937877+08:00||;True|2026-09-04T11:45:16.1372876+08:00||;True|2026-09-04T11:42:59.9356436+08:00||;True|2026-09-03T16:05:52.5270232+08:00||;True|2026-09-03T14:52:56.8559144+08:00||;True|2026-09-02T11:08:23.8720038+08:00||;True|2026-09-02T10:58:16.8081797+08:00||;True|2026-08-26T13:34:12.3805892+08:00||;True|2026-08-25T08:31:30.7787234+08:00||;True|2026-08-20T13:10:46.4725468+08:00||;True|2026-08-20T13:10:28.3142576+08:00||;True|2026-08-19T16:10:27.3362887+08:00||;True|2026-08-19T16:01:12.6234971+08:00||;True|2026-08-19T15:42:46.6576265+08:00||;True|2026-08-19T13:39:59.9363522+08:00||;True|2026-08-19T13:36:53.0379313+08:00||;True|2026-08-19T13:31:36.0841398+08:00||;True|2026-08-19T11:44:37.5319626+08:00||;True|2026-08-19T09:36:45.6000047+08:00||;True|2026-08-19T09:34:36.8468631+08:00||;True|2026-08-19T08:35:41.2202300+08:00||;True|2026-08-18T16:20:59.0170916+08:00||;</History>
     <LastFailureDetails />
   </PropertyGroup>
 </Project>
\ No newline at end of file
diff --git a/uniapp/youjiala/src/components/file-grid-list/file-grid-list.vue b/uniapp/youjiala/src/components/file-grid-list/file-grid-list.vue
index 1962673..97f3859 100644
--- a/uniapp/youjiala/src/components/file-grid-list/file-grid-list.vue
+++ b/uniapp/youjiala/src/components/file-grid-list/file-grid-list.vue
@@ -65,9 +65,9 @@ function onThumbError(file: FileItem): void {
     thumbFailed.value.add(file.id);
 }
 
-/** 可显缩略图的地址：仅图片类型且后端 Url（Scale 压缩图）有值、未报错 */
+/** 可显缩略图的地址：图片是 Scale 压缩图、视频是上传时抽的同名 jpg（两者都在 thumbUrl 里），有值且未报错才显 */
 function thumbSrcOf(file: FileItem): string {
-    return file.kind === "image" && file.thumbUrl && !thumbFailed.value.has(file.id) ? file.thumbUrl : "";
+    return file.thumbUrl && !thumbFailed.value.has(file.id) ? file.thumbUrl : "";
 }
 
 function isSelected(file: FileItem): boolean {
@@ -120,7 +120,7 @@ function onCardTap(file: FileItem): void {
                     <view v-if="file.kind === 'folder'" class="fgl-card__folder" :style="folderStyle">
                         <view class="fgl-card__folder-tab" :style="folderTabStyle" />
                     </view>
-                    <!-- 图片卡：后端 Url 指向 Scale 原图压缩缩略（旧系统宫格同款），失败回退图标 -->
+                    <!-- 缩略图：图片是后端 Scale 压缩图，视频是上传时 ffmpeg 抽的同名 jpg（旧系统 MyComputer 同款），失败回退图标 -->
                     <image v-else-if="thumbSrcOf(file)" class="fgl-card__thumb" :src="thumbSrcOf(file)"
                         mode="aspectFill" @error="onThumbError(file)" />
                     <u-icon v-else :name="visualOf(file.kind)!.icon" size="88" :color="visualOf(file.kind)!.color" />
@@ -134,6 +134,10 @@ function onCardTap(file: FileItem): void {
                             :color="file.permission === 'Y' ? '#52c41a' : '#8c8c8c'" />
                         <u-icon v-if="file.shared" name="share-fill" size="28" color="#1890ff" />
                     </view>
+                    <!-- 视频封右下角的播放角标（旧系统 play-overlay 同位）：没截到图回退图标时不叠 -->
+                    <view v-if="file.kind === 'video' && thumbSrcOf(file)" class="fgl-card__play">
+                        <u-icon name="play-right-fill" size="18" color="#ffffff" />
+                    </view>
                 </view>
 
                 <view class="fgl-card__info">
@@ -259,6 +263,20 @@ function onCardTap(file: FileItem): void {
     background-color: rgba(31, 35, 41, 0.04);
 }
 
+/* 视频播放角标：压在封面右下角，半透黑圆底 + 白三角 */
+.fgl-card__play {
+    position: absolute;
+    right: 6rpx;
+    bottom: 6rpx;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    width: 36rpx;
+    height: 36rpx;
+    border-radius: 50%;
+    background-color: rgba(31, 35, 41, 0.55);
+}
+
 .fgl-card__info {
     width: 100%;
     padding: 0 12rpx;
diff --git a/uniapp/youjiala/src/components/file-picker-sheet/file-picker-sheet.vue b/uniapp/youjiala/src/components/file-picker-sheet/file-picker-sheet.vue
index 734f104..0db9e95 100644
--- a/uniapp/youjiala/src/components/file-picker-sheet/file-picker-sheet.vue
+++ b/uniapp/youjiala/src/components/file-picker-sheet/file-picker-sheet.vue
@@ -12,23 +12,23 @@ import { computed, ref, watch } from "vue";
 import { useDmsFiles, useThemeTokens } from "@/composables";
 
 const props = defineProps({
-  /** 弹层是否展开 */
-  visible: {
-    type: Boolean,
-    default: false,
-  },
-  /** 可选文件类型（folder 不在此列也始终可进入） */
-  accept: {
-    type: Array as PropType<FileKind[]>,
-    default: () => ["image", "audio", "document"],
-  },
+    /** 弹层是否展开 */
+    visible: {
+        type: Boolean,
+        default: false,
+    },
+    /** 可选文件类型（folder 不在此列也始终可进入） */
+    accept: {
+        type: Array as PropType<FileKind[]>,
+        default: () => ["image", "audio", "document"],
+    },
 });
 
 const emit = defineEmits<{
-  /** 关闭弹层（遮罩/关闭按钮/根目录点返回） */
-  (e: "close"): void;
-  /** 选中一个文件，回传完整记录（FileName 是提交值，Url 可直接预览） */
-  (e: "select", record: DmsFileUploadViewDisplayData): void;
+    /** 关闭弹层（遮罩/关闭按钮/根目录点返回） */
+    (e: "close"): void;
+    /** 选中一个文件，回传完整记录（FileName 是提交值，Url 可直接预览） */
+    (e: "select", record: DmsFileUploadViewDisplayData): void;
 }>();
 
 const { t } = useLocale();
@@ -39,278 +39,279 @@ const keyword = ref("");
 
 /** 类型过滤：文件夹保留用于下钻，文件只留 accept 内的类型 */
 const rows = computed<FileItem[]>(() =>
-  files.files.value.filter(
-    file => file.kind === "folder" || props.accept.includes(file.kind),
-  ),
+    files.files.value.filter(
+        file => file.kind === "folder" || props.accept.includes(file.kind),
+    ),
 );
 
 const loading = files.loading;
 
 /** 当前目录名（面包屑末项），用于顶部路径展示 */
 const currName = computed(
-  () => files.pathStack.value[files.pathStack.value.length - 1]?.displayName || t("FilePage.myCloud"),
+    () => files.pathStack.value[files.pathStack.value.length - 1]?.displayName || t("FilePage.myCloud"),
 );
 
 // 每次打开都从「我的网盘」根目录重新加载：目录可能被别的操作改过，也避免停在上一轮的下钻位置
 watch(
-  () => props.visible,
-  (open) => {
-    if (!open) {
-      return;
-    }
-    keyword.value = "";
-    void files.init();
-  },
-  { immediate: true },
+    () => props.visible,
+    (open) => {
+        if (!open) {
+            return;
+        }
+        keyword.value = "";
+        void files.init();
+    },
+    { immediate: true },
 );
 
 /** 点文件夹下钻，点文件回传并关闭 */
 async function onTap(row: FileItem): Promise<void> {
-  if (row.kind === "folder") {
-    await files.openFolder(row);
-    return;
-  }
-  const record = files.records.value.get(row.id);
-  if (!record) {
-    return;
-  }
-  emit("select", record);
-  emit("close");
+    if (row.kind === "folder") {
+        await files.openFolder(row);
+        return;
+    }
+    const record = files.records.value.get(row.id);
+    if (!record) {
+        return;
+    }
+    emit("select", record);
+    emit("close");
 }
 
 /** 返回上级；已在根目录则关闭弹层 */
 async function onBack(): Promise<void> {
-  const stayed = await files.back();
-  if (!stayed) {
-    emit("close");
-  }
+    const stayed = await files.back();
+    if (!stayed) {
+        emit("close");
+    }
 }
 
 async function onSearch(): Promise<void> {
-  await files.search(keyword.value);
+    await files.search(keyword.value);
 }
 
 /** 文件类型 -> 图标与配色（与 file-grid-list 同套；文件夹用 CSS 造型，图标库没有 folder） */
 const kindVisual: Record<Exclude<FileKind, "folder">, { icon: string; color: string }> = {
-  image: { icon: "photo-fill", color: "#0ea5e9" },
-  video: { icon: "play-right-fill", color: "#8b5cf6" },
-  document: { icon: "file-text-fill", color: "#3b82f6" },
-  audio: { icon: "volume-up", color: "#f59e0b" },
+    image: { icon: "photo-fill", color: "#0ea5e9" },
+    video: { icon: "play-right-fill", color: "#8b5cf6" },
+    document: { icon: "file-text-fill", color: "#3b82f6" },
+    audio: { icon: "volume-up", color: "#f59e0b" },
 };
 
 function visualOf(kind: FileKind): { icon: string; color: string } {
-  return kind === "folder" ? { icon: "file-text-fill", color: "#8f959e" } : kindVisual[kind];
+    return kind === "folder" ? { icon: "file-text-fill", color: "#8f959e" } : kindVisual[kind];
 }
 
 // 缩略图加载失败的行记住失败态，回退类型图标（与网盘宫格同一套处理，图被清理时不致白块）
 const thumbFailed = ref(new Set<number>());
 
 function onThumbError(row: FileItem): void {
-  thumbFailed.value.add(row.id);
+    thumbFailed.value.add(row.id);
 }
 
-/** 可显缩略图的地址：仅图片类型且后端 Url（Scale 压缩图）有值、未报错 */
+/** 可显缩略图的地址：图片是 Scale 压缩图、视频是上传时抽的同名 jpg（两者都在 thumbUrl 里），有值且未报错才显 */
 function thumbSrcOf(row: FileItem): string {
-  return row.kind === "image" && row.thumbUrl && !thumbFailed.value.has(row.id) ? row.thumbUrl : "";
+    return row.thumbUrl && !thumbFailed.value.has(row.id) ? row.thumbUrl : "";
 }
 </script>
 
 <template>
-  <!-- u-popup 只认 modelValue（v-model），绑 :show 会静默弹不出 -->
-  <u-popup :model-value="visible" mode="bottom" round="24" @close="emit('close')">
-    <view class="file-pick">
-      <view class="file-pick__head">
-        <text class="file-pick__title">{{ t("FilePage.pickFile") }}</text>
-        <u-icon name="close" size="32" color="#8f959e" @click="emit('close')" />
-      </view>
+    <!-- u-popup 只认 modelValue（v-model），绑 :show 会静默弹不出 -->
+    <u-popup :model-value="visible" mode="bottom" round="24" @close="emit('close')">
+        <view class="file-pick">
+            <view class="file-pick__head">
+                <text class="file-pick__title">{{ t("FilePage.pickFile") }}</text>
+                <u-icon name="close" size="32" color="#8f959e" @click="emit('close')" />
+            </view>
 
-      <!-- 当前目录 + 返回上级 -->
-      <view class="file-pick__bar">
-        <view class="file-pick__back" @tap="onBack">
-          <u-icon name="arrow-left" size="28" color="#5c626b" />
-        </view>
-        <text class="file-pick__path">{{ currName }}</text>
-      </view>
+            <!-- 当前目录 + 返回上级 -->
+            <view class="file-pick__bar">
+                <view class="file-pick__back" @tap="onBack">
+                    <u-icon name="arrow-left" size="28" color="#5c626b" />
+                </view>
+                <text class="file-pick__path">{{ currName }}</text>
+            </view>
 
-      <!-- 按名称搜索当前目录（回车或点放大镜） -->
-      <view class="file-pick__search">
-        <input v-model="keyword" class="file-pick__search-input" :placeholder="t('FilePage.searchPlaceholder')"
-               confirm-type="search" @confirm="onSearch">
-        <view class="file-pick__search-btn" @tap="onSearch">
-          <u-icon name="search" size="32" color="#8f959e" />
-        </view>
-      </view>
+            <!-- 按名称搜索当前目录（回车或点放大镜） -->
+            <view class="file-pick__search">
+                <input v-model="keyword" class="file-pick__search-input" :placeholder="t('FilePage.searchPlaceholder')"
+                    confirm-type="search" @confirm="onSearch">
+                <view class="file-pick__search-btn" @tap="onSearch">
+                    <u-icon name="search" size="32" color="#8f959e" />
+                </view>
+            </view>
 
-      <scroll-view scroll-y class="file-pick__list">
-        <view v-if="loading" class="file-pick__empty">
-          <text>{{ t("FilePage.loading") }}</text>
-        </view>
-        <view v-else-if="!rows.length" class="file-pick__empty">
-          <text>{{ t("FilePage.emptyText") }}</text>
-        </view>
-        <view v-for="row in rows" :key="row.id" class="file-pick__row" @tap="onTap(row)">
-          <view v-if="row.kind === 'folder'" class="file-pick__folder" :style="{ background: accentGradient }">
-            <view class="file-pick__folder-tab" :style="{ background: accentGradient }" />
-          </view>
-          <!-- 图片行：后端 Url 指向 Scale 压缩缩略（网盘宫格同源），失败回退类型图标 -->
-          <image v-else-if="thumbSrcOf(row)" class="file-pick__thumb" :src="thumbSrcOf(row)"
-                 mode="aspectFill" @error="onThumbError(row)" />
-          <u-icon v-else :name="visualOf(row.kind).icon" size="36" :color="visualOf(row.kind).color" />
-          <view class="file-pick__row-main">
-            <text class="file-pick__row-name">{{ row.name }}</text>
-            <text v-if="row.sizeText" class="file-pick__row-meta">{{ row.sizeText }}</text>
-          </view>
-          <u-icon v-if="row.kind === 'folder'" name="arrow-right" size="24" color="#c0c4cc" />
-        </view>
-      </scroll-view>
+            <scroll-view scroll-y class="file-pick__list">
+                <view v-if="loading" class="file-pick__empty">
+                    <text>{{ t("FilePage.loading") }}</text>
+                </view>
+                <view v-else-if="!rows.length" class="file-pick__empty">
+                    <text>{{ t("FilePage.emptyText") }}</text>
+                </view>
+                <view v-for="row in rows" :key="row.id" class="file-pick__row" @tap="onTap(row)">
+                    <view v-if="row.kind === 'folder'" class="file-pick__folder"
+                        :style="{ background: accentGradient }">
+                        <view class="file-pick__folder-tab" :style="{ background: accentGradient }" />
+                    </view>
+                    <!-- 缩略图：图片走 Scale 压缩图，视频走后端抽的同名 jpg（网盘宫格同源），失败回退类型图标 -->
+                    <image v-else-if="thumbSrcOf(row)" class="file-pick__thumb" :src="thumbSrcOf(row)" mode="aspectFill"
+                        @error="onThumbError(row)" />
+                    <u-icon v-else :name="visualOf(row.kind).icon" size="36" :color="visualOf(row.kind).color" />
+                    <view class="file-pick__row-main">
+                        <text class="file-pick__row-name">{{ row.name }}</text>
+                        <text v-if="row.sizeText" class="file-pick__row-meta">{{ row.sizeText }}</text>
+                    </view>
+                    <u-icon v-if="row.kind === 'folder'" name="arrow-right" size="24" color="#c0c4cc" />
+                </view>
+            </scroll-view>
 
-      <view class="file-pick__safe" />
-    </view>
-  </u-popup>
+            <view class="file-pick__safe" />
+        </view>
+    </u-popup>
 </template>
 
 <style lang="scss" scoped>
 /* 底部抽屉统一风格：浅灰面板底 + 白色圆角行 */
 .file-pick {
-  padding: 32rpx 24rpx 0;
-  background-color: #f2f3f5;
+    padding: 32rpx 24rpx 0;
+    background-color: #f2f3f5;
 
-  &__head {
-    display: flex;
-    align-items: center;
-    justify-content: space-between;
-    padding: 0 8rpx 24rpx;
-  }
+    &__head {
+        display: flex;
+        align-items: center;
+        justify-content: space-between;
+        padding: 0 8rpx 24rpx;
+    }
 
-  &__title {
-    font-size: 30rpx;
-    font-weight: 600;
-    color: #1f2329;
-  }
+    &__title {
+        font-size: 30rpx;
+        font-weight: 600;
+        color: #1f2329;
+    }
 
-  &__bar {
-    display: flex;
-    align-items: center;
-    gap: 16rpx;
-    padding: 20rpx 24rpx;
-    border-radius: 16rpx;
-    background-color: #ffffff;
-  }
+    &__bar {
+        display: flex;
+        align-items: center;
+        gap: 16rpx;
+        padding: 20rpx 24rpx;
+        border-radius: 16rpx;
+        background-color: #ffffff;
+    }
 
-  &__back {
-    display: flex;
-    align-items: center;
-    justify-content: center;
-  }
+    &__back {
+        display: flex;
+        align-items: center;
+        justify-content: center;
+    }
 
-  &__path {
-    flex: 1;
-    min-width: 0;
-    overflow: hidden;
-    font-size: 26rpx;
-    color: #5c626b;
-    text-overflow: ellipsis;
-    white-space: nowrap;
-  }
+    &__path {
+        flex: 1;
+        min-width: 0;
+        overflow: hidden;
+        font-size: 26rpx;
+        color: #5c626b;
+        text-overflow: ellipsis;
+        white-space: nowrap;
+    }
 
-  &__search {
-    display: flex;
-    align-items: center;
-    gap: 12rpx;
-    height: 76rpx;
-    margin-top: 16rpx;
-    padding: 0 24rpx;
-    border-radius: 16rpx;
-    background-color: #ffffff;
-  }
+    &__search {
+        display: flex;
+        align-items: center;
+        gap: 12rpx;
+        height: 76rpx;
+        margin-top: 16rpx;
+        padding: 0 24rpx;
+        border-radius: 16rpx;
+        background-color: #ffffff;
+    }
 
-  &__search-input {
-    flex: 1;
-    min-width: 0;
-    font-size: 28rpx;
-    color: #1f2329;
-  }
+    &__search-input {
+        flex: 1;
+        min-width: 0;
+        font-size: 28rpx;
+        color: #1f2329;
+    }
 
-  &__search-btn {
-    display: flex;
-    align-items: center;
-    justify-content: center;
-  }
+    &__search-btn {
+        display: flex;
+        align-items: center;
+        justify-content: center;
+    }
 
-  &__list {
-    height: 52vh;
-    margin-top: 16rpx;
-  }
+    &__list {
+        height: 52vh;
+        margin-top: 16rpx;
+    }
 
-  &__row {
-    display: flex;
-    align-items: center;
-    gap: 20rpx;
-    margin-bottom: 16rpx;
-    padding: 24rpx 28rpx;
-    border-radius: 16rpx;
-    background-color: #ffffff;
-  }
+    &__row {
+        display: flex;
+        align-items: center;
+        gap: 20rpx;
+        margin-bottom: 16rpx;
+        padding: 24rpx 28rpx;
+        border-radius: 16rpx;
+        background-color: #ffffff;
+    }
 
-  &__row-main {
-    display: flex;
-    flex: 1;
-    flex-direction: column;
-    min-width: 0;
-  }
+    &__row-main {
+        display: flex;
+        flex: 1;
+        flex-direction: column;
+        min-width: 0;
+    }
 
-  /* 图片预览缩略：尺寸与网盘宫格缩略一致 */
-  &__thumb {
-    flex-shrink: 0;
-    width: 96rpx;
-    height: 96rpx;
-    border-radius: 14rpx;
-    background-color: rgba(31, 35, 41, 0.04);
-  }
+    /* 图片预览缩略：尺寸与网盘宫格缩略一致 */
+    &__thumb {
+        flex-shrink: 0;
+        width: 96rpx;
+        height: 96rpx;
+        border-radius: 14rpx;
+        background-color: rgba(31, 35, 41, 0.04);
+    }
 
-  &__row-name {
-    overflow: hidden;
-    font-size: 28rpx;
-    color: #1f2329;
-    text-overflow: ellipsis;
-    white-space: nowrap;
-  }
+    &__row-name {
+        overflow: hidden;
+        font-size: 28rpx;
+        color: #1f2329;
+        text-overflow: ellipsis;
+        white-space: nowrap;
+    }
 
-  &__row-meta {
-    margin-top: 6rpx;
-    font-size: 22rpx;
-    color: #a8adb5;
-  }
+    &__row-meta {
+        margin-top: 6rpx;
+        font-size: 22rpx;
+        color: #a8adb5;
+    }
 
-  /* 文件夹：纯 CSS 造型（主体 + 左上页签） */
-  &__folder {
-    position: relative;
-    width: 44rpx;
-    height: 32rpx;
-    border-radius: 6rpx;
-  }
+    /* 文件夹：纯 CSS 造型（主体 + 左上页签） */
+    &__folder {
+        position: relative;
+        width: 44rpx;
+        height: 32rpx;
+        border-radius: 6rpx;
+    }
 
-  &__folder-tab {
-    position: absolute;
-    top: -8rpx;
-    left: 0;
-    width: 20rpx;
-    height: 10rpx;
-    border-radius: 4rpx 4rpx 0 0;
-  }
+    &__folder-tab {
+        position: absolute;
+        top: -8rpx;
+        left: 0;
+        width: 20rpx;
+        height: 10rpx;
+        border-radius: 4rpx 4rpx 0 0;
+    }
 
-  &__empty {
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    padding: 80rpx 0;
-    font-size: 26rpx;
-    color: #a8adb5;
-  }
+    &__empty {
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        padding: 80rpx 0;
+        font-size: 26rpx;
+        color: #a8adb5;
+    }
 
-  /* 底部留白：贴屏安全区 */
-  &__safe {
-    height: calc(32rpx + env(safe-area-inset-bottom));
-  }
+    /* 底部留白：贴屏安全区 */
+    &__safe {
+        height: calc(32rpx + env(safe-area-inset-bottom));
+    }
 }
 </style>
diff --git a/uniapp/youjiala/src/composables/useDmsFiles.ts b/uniapp/youjiala/src/composables/useDmsFiles.ts
index 2b0c678..ebc6ce4 100644
--- a/uniapp/youjiala/src/composables/useDmsFiles.ts
+++ b/uniapp/youjiala/src/composables/useDmsFiles.ts
@@ -20,6 +20,7 @@ import { computed, ref } from "vue";
 import { DmsFileSearchCriteria } from "@/data/auto/dmsFileSearchCriteria";
 import { DmsFileUploadViewDisplayData as UploadView } from "@/data/auto/dmsFileUploadViewDisplayData";
 import { SearchFilter } from "@/data/auto/searchFilter";
+import { pickThumbUrl } from "@/data/custom/fileBrowser";
 import fileTypePolicy, { FileTypePolicy } from "@/policy/custom/fileTypePolicy";
 import dmsFileService from "@/service/master/dmsFileService";
 
@@ -132,8 +133,8 @@ export function useDmsFiles() {
       id: record.FileId,
       name: record.OrgFileName || record.FileName,
       kind,
-      // 图片卡显 Scale 缩略图（后端 Url 字段已拼好，旧系统宫格同款）
-      thumbUrl: kind === "image" ? record.Url || undefined : undefined,
+      // 图片卡显 Scale 缩略图（后端 Url），视频卡显上传时抽的同名 jpg（后端 FormattedPic，旧系统视频卡同款）
+      thumbUrl: pickThumbUrl(kind, record.Url, record.FormattedPic),
       // 卡片元数据不显示用户：文件夹 sizeText 为空只剩时间，文件显示大小+时间
       // FileSize 单位是 KB（旧系统 DmsFileEnquiry 下载缓冲 (FileSize+1)*1024 字节佐证），先换算成字节
       sizeText: formatSize(
diff --git a/uniapp/youjiala/src/composables/useShareHall.ts b/uniapp/youjiala/src/composables/useShareHall.ts
index 6831c46..6ba7e31 100644
--- a/uniapp/youjiala/src/composables/useShareHall.ts
+++ b/uniapp/youjiala/src/composables/useShareHall.ts
@@ -24,6 +24,7 @@ import { DmsFileSearchCriteria } from "@/data/auto/dmsFileSearchCriteria";
 import { FamilyDmsFileViewDisplayData as FamilyView } from "@/data/auto/familyDmsFileViewDisplayData";
 import { FamilyDmsFileViewEntity } from "@/data/auto/familyDmsFileViewEntity";
 import { SearchFilter } from "@/data/auto/searchFilter";
+import { pickThumbUrl } from "@/data/custom/fileBrowser";
 import dmsFileService from "@/service/master/dmsFileService";
 import familyGroupService from "@/service/master/familyGroupService";
 import {
@@ -88,8 +89,8 @@ export function useShareHall() {
       id: record.FileId,
       name: record.OrgFileName || record.FileName,
       kind,
-      // 图片卡显 Scale 缩略图（后端 Url 字段已拼好，旧系统宫格同款）
-      thumbUrl: kind === "image" ? record.Url || undefined : undefined,
+      // 图片卡显 Scale 缩略图（后端 Url），视频卡显上传时抽的同名 jpg（后端 FormattedPic，旧系统视频卡同款）
+      thumbUrl: pickThumbUrl(kind, record.Url, record.FormattedPic),
       // FileSize 单位是 KB（旧系统下载缓冲 (FileSize+1)*1024 字节佐证），先换算成字节
       sizeText: formatSize(
         record.FileSize ? record.FileSize * 1024 : undefined,
diff --git a/uniapp/youjiala/src/composables/useTrashFiles.ts b/uniapp/youjiala/src/composables/useTrashFiles.ts
index 123d1c1..c535be2 100644
--- a/uniapp/youjiala/src/composables/useTrashFiles.ts
+++ b/uniapp/youjiala/src/composables/useTrashFiles.ts
@@ -16,6 +16,7 @@ import { ref } from "vue";
 import { DmsFileSearchCriteria } from "@/data/auto/dmsFileSearchCriteria";
 import { DmsFileUploadDeleteLogViewDisplayData as DeleteLogView } from "@/data/auto/dmsFileUploadDeleteLogViewDisplayData";
 import { SearchFilter } from "@/data/auto/searchFilter";
+import { pickThumbUrl } from "@/data/custom/fileBrowser";
 import dmsFileService from "@/service/master/dmsFileService";
 import {
   formatModifiedLabel,
@@ -45,8 +46,8 @@ export function useTrashFiles() {
       id: record.FileId,
       name: record.OrgFileName || record.FileName,
       kind,
-      // 回收站也显缩略图（日志视图 Url 同口径拼的 Scale 图，文件删了图还在）
-      thumbUrl: kind === "image" ? record.Url || undefined : undefined,
+      // 回收站也显缩略图：图片是 Scale 压缩图、视频是同名 jpg 封面（日志视图同口径拼的，文件删了图还在）
+      thumbUrl: pickThumbUrl(kind, record.Url, record.FormattedPic),
       // FileSize 单位是 KB（旧系统下载缓冲 (FileSize+1)*1024 字节佐证），先换算成字节
       sizeText: formatSize(
         record.FileSize ? record.FileSize * 1024 : undefined,
diff --git a/uniapp/youjiala/src/data/custom/fileBrowser.ts b/uniapp/youjiala/src/data/custom/fileBrowser.ts
index b6c6be5..5f21aa3 100644
--- a/uniapp/youjiala/src/data/custom/fileBrowser.ts
+++ b/uniapp/youjiala/src/data/custom/fileBrowser.ts
@@ -28,10 +28,29 @@ export interface FileItem {
   permission?: "Y" | "N";
   /** 已被收藏共享（PermissionIndc=Y 且 FavoriteIndc=Y）：显示蓝色共享角标 */
   shared?: boolean;
-  /** 图片缩略图地址（后端 PackUrl 拼的 Scale 压缩图，旧系统宫格同款）；仅 image 类型且有值时卡片显图，否则显类型图标 */
+  /** 缩略图地址：图片是后端 PackUrl 拼的 Scale 压缩图，视频是后端 ffmpeg 截的同名 jpg（旧系统 MyComputer 同款）；
+   *  没值（如老视频从未截过图）时卡片回退类型图标 */
   thumbUrl?: string;
 }
 
+/**
+ * 卡片缩略图取值：图片用 Url（Scale 压缩图）、视频用 FormattedPic（上传时抽帧的同名 .jpg），
+ * 其余类型不给图。三处列表（网盘 / 共享域 / 回收站）统一走这里，不再各自写判断。
+ */
+export function pickThumbUrl(
+  kind: FileKind,
+  url?: string | null,
+  formattedPic?: string | null,
+): string | undefined {
+  if (kind === "image") {
+    return url || undefined;
+  }
+  if (kind === "video") {
+    return formattedPic || undefined;
+  }
+  return undefined;
+}
+
 /** 快捷功能入口的单项：图标 + 渐变底色，页面给什么画什么 */
 export interface QuickEntryItem {
   key: string;
diff --git a/uniapp/youjiala/src/pages/tab/media.vue b/uniapp/youjiala/src/pages/tab/media.vue
index 3746e47..424045d 100644
--- a/uniapp/youjiala/src/pages/tab/media.vue
+++ b/uniapp/youjiala/src/pages/tab/media.vue
@@ -1013,7 +1013,8 @@ function onRemoveGroup(familyName: string): void {
             <u-icon name="close" size="32" color="#8f959e" @click="closeDetailEditor" />
           </view>
           <!-- 音轨 6 个字段超出小屏时表单内滚动，按钮固定在底部 -->
-          <scroll-view scroll-y class="detail-sheet__scroll" :class="{ 'detail-sheet__scroll--audio': kind === 'audio' }">
+          <scroll-view scroll-y class="detail-sheet__scroll"
+            :class="{ 'detail-sheet__scroll--audio': kind === 'audio' }">
             <view class="detail-sheet__form">
               <!-- 音轨：标题/歌手/封面/地址/歌词（对齐旧系统表单），文件字段走「我的网盘」选择 -->
               <template v-if="kind === 'audio'">
@@ -1031,10 +1032,9 @@ function onRemoveGroup(familyName: string): void {
                   <text class="detail-sheet-field__label">{{ t("MediaPage.detailCover") }}</text>
                   <view class="detail-sheet-field__file">
                     <view class="detail-sheet-field__static">
-                      <text
-                        class="detail-sheet-field__static-text"
-                        :class="{ 'detail-sheet-field__static-text--empty': !detailDraft.picName }"
-                      >{{ detailDraft.picName || t("MediaPage.detailCover") }}</text>
+                      <text class="detail-sheet-field__static-text"
+                        :class="{ 'detail-sheet-field__static-text--empty': !detailDraft.picName }">{{
+                          detailDraft.picName || t("MediaPage.detailCover") }}</text>
                     </view>
                     <view class="detail-sheet-field__pick" @tap="openFilePicker('pic')">
                       <u-icon name="search" size="32" color="#8f959e" />
@@ -1045,10 +1045,9 @@ function onRemoveGroup(familyName: string): void {
                   <text class="detail-sheet-field__label">{{ t("MediaPage.detailUrl") }}</text>
                   <view class="detail-sheet-field__file">
                     <view class="detail-sheet-field__static">
-                      <text
-                        class="detail-sheet-field__static-text"
-                        :class="{ 'detail-sheet-field__static-text--empty': !detailDraft.urlName }"
-                      >{{ detailDraft.urlName || t("MediaPage.detailUrl") }}</text>
+                      <text class="detail-sheet-field__static-text"
+                        :class="{ 'detail-sheet-field__static-text--empty': !detailDraft.urlName }">{{
+                          detailDraft.urlName || t("MediaPage.detailUrl") }}</text>
                     </view>
                     <view class="detail-sheet-field__pick" @tap="openFilePicker('url')">
                       <u-icon name="search" size="32" color="#8f959e" />
@@ -1059,10 +1058,9 @@ function onRemoveGroup(familyName: string): void {
                   <text class="detail-sheet-field__label">{{ t("MediaPage.detailLrc") }}</text>
                   <view class="detail-sheet-field__file">
                     <view class="detail-sheet-field__static">
-                      <text
-                        class="detail-sheet-field__static-text"
-                        :class="{ 'detail-sheet-field__static-text--empty': !detailDraft.lrcName }"
-                      >{{ detailDraft.lrcName || t("MediaPage.detailLrc") }}</text>
+                      <text class="detail-sheet-field__static-text"
+                        :class="{ 'detail-sheet-field__static-text--empty': !detailDraft.lrcName }">{{
+                          detailDraft.lrcName || t("MediaPage.detailLrc") }}</text>
                     </view>
                     <view class="detail-sheet-field__pick" @tap="openFilePicker('lrc')">
                       <u-icon name="search" size="32" color="#8f959e" />
@@ -1092,8 +1090,8 @@ function onRemoveGroup(familyName: string): void {
       </u-popup>
 
       <!-- 明细文件选择（封面/地址/歌词）：从我的网盘挑文件，回填 DMS 文件名 -->
-      <file-picker-sheet :visible="filePickerVisible" :accept="filePickerAccept"
-        @close="filePickerVisible = false" @select="onPickFile" />
+      <file-picker-sheet :visible="filePickerVisible" :accept="filePickerAccept" @close="filePickerVisible = false"
+        @select="onPickFile" />
     </view>
   </app-page>
 </template>