diff --git a/backend/apps/generation/views.py b/backend/apps/generation/views.py
index 5b890f0..984053a 100644
--- a/backend/apps/generation/views.py
+++ b/backend/apps/generation/views.py
@@ -1819,6 +1819,7 @@ def admin_records_view(request):
             'seed': r.seed,
             'ark_task_id': r.ark_task_id or '',
             'result_url': r.result_url or '',
+            'thumbnail_url': r.thumbnail_url or '',
         })
 
     return Response({
@@ -1884,6 +1885,7 @@ def team_records_view(request):
             'seed': r.seed,
             'ark_task_id': r.ark_task_id or '',
             'result_url': r.result_url or '',
+            'thumbnail_url': r.thumbnail_url or '',
         })
 
     return Response({
@@ -2770,6 +2772,8 @@ def profile_records_view(request):
             'resolution': r.resolution,
             'status': r.status,
             'error_message': r.error_message or '',
+            'result_url': r.result_url or '',
+            'thumbnail_url': r.thumbnail_url or '',
         })
 
     return Response({
diff --git a/web/src/components/GenerationCard.tsx b/web/src/components/GenerationCard.tsx
index 95b2e20..37b5113 100644
--- a/web/src/components/GenerationCard.tsx
+++ b/web/src/components/GenerationCard.tsx
@@ -476,6 +476,7 @@ export function GenerationCard({ task, onOpenDetail }: Props) {
             <video
               ref={videoRef}
               src={rewriteTosUrl(task.resultUrl)}
+              poster={task.thumbnailUrl ? rewriteTosUrl(task.thumbnailUrl) : undefined}
               className={styles.resultMedia}
               loop
               preload="metadata"
diff --git a/web/src/components/RecordDetailModal.tsx b/web/src/components/RecordDetailModal.tsx
index f68cee9..a8deeae 100644
--- a/web/src/components/RecordDetailModal.tsx
+++ b/web/src/components/RecordDetailModal.tsx
@@ -121,6 +121,7 @@ function MediaArea({ record: r }: { record: AdminRecord }) {
       {r.status === 'completed' && r.result_url ? (
         <video
           src={rewriteTosUrl(r.result_url)}
+          poster={r.thumbnail_url ? rewriteTosUrl(r.thumbnail_url) : undefined}
           style={mediaVideo}
           controls
           preload="metadata"
diff --git a/web/src/components/VideoDetailModal.tsx b/web/src/components/VideoDetailModal.tsx
index 0e3b3f1..52d1358 100644
--- a/web/src/components/VideoDetailModal.tsx
+++ b/web/src/components/VideoDetailModal.tsx
@@ -303,6 +303,7 @@ export function VideoDetailModal({ task, onClose, onReEdit, onRegenerate, onDele
             <video
               ref={videoRef}
               src={rewriteTosUrl(task.resultUrl)}
+              poster={task.thumbnailUrl ? rewriteTosUrl(task.thumbnailUrl) : undefined}
               className={styles.video}
               onTimeUpdate={handleTimeUpdate}
               onLoadedMetadata={handleLoadedMetadata}
diff --git a/web/src/types/index.ts b/web/src/types/index.ts
index 06ec2f4..c9b1ee1 100644
--- a/web/src/types/index.ts
+++ b/web/src/types/index.ts
@@ -218,6 +218,7 @@ export interface AdminRecord {
   seed?: number;
   ark_task_id?: string;
   result_url?: string;
+  thumbnail_url?: string;
 }
 
 export interface SystemSettings {