diff --git a/server.py b/server.py
index 350d0ee..74ff53c 100644
--- a/server.py
+++ b/server.py
@@ -1426,7 +1426,8 @@ async def ui_runs(request: Request):
                     <div class="flex justify-center">
                 ''')
                 if input_media_type == "video":
-                    html_parts.append(f'<video src="/cache/{input_hash}" controls muted loop playsinline class="max-h-32 rounded"></video>')
+                    input_video_src = video_src_for_request(input_hash, request)
+                    html_parts.append(f'<video src="{input_video_src}" controls muted loop playsinline class="max-h-32 rounded"></video>')
                 elif input_media_type == "image":
                     html_parts.append(f'<img src="/cache/{input_hash}" alt="input" class="max-h-32 rounded">')
                 html_parts.append('</div></div>')
@@ -1441,7 +1442,8 @@ async def ui_runs(request: Request):
                     <div class="flex justify-center">
                 ''')
                 if output_media_type == "video":
-                    html_parts.append(f'<video src="/cache/{output_hash}" controls autoplay muted loop playsinline class="max-h-32 rounded"></video>')
+                    output_video_src = video_src_for_request(output_hash, request)
+                    html_parts.append(f'<video src="{output_video_src}" controls autoplay muted loop playsinline class="max-h-32 rounded"></video>')
                 elif output_media_type == "image":
                     html_parts.append(f'<img src="/cache/{output_hash}" alt="output" class="max-h-32 rounded">')
                 html_parts.append('</div></div>')
@@ -1551,7 +1553,8 @@ async def ui_cache_list(
         ''')
 
         if media_type == "video":
-            html_parts.append(f'<video src="/cache/{content_hash}" controls muted loop playsinline class="max-h-32 rounded"></video>')
+            video_src = video_src_for_request(content_hash, request)
+            html_parts.append(f'<video src="{video_src}" controls muted loop playsinline class="max-h-32 rounded"></video>')
         elif media_type == "image":
             html_parts.append(f'<img src="/cache/{content_hash}" alt="{content_hash[:16]}" class="max-h-32 rounded object-contain">')
         else:
@@ -1871,7 +1874,7 @@ async def ui_detail_page(run_id: str, request: Request):
 
 
 @app.get("/ui/run/{run_id}", response_class=HTMLResponse)
-async def ui_run_partial(run_id: str):
+async def ui_run_partial(run_id: str, request: Request):
     """HTMX partial: single run (for polling updates)."""
     run = load_run(run_id)
     if not run:
@@ -1942,7 +1945,8 @@ async def ui_run_partial(run_id: str):
                 <div class="flex justify-center">
             '''
             if input_media_type == "video":
-                html += f'<video src="/cache/{input_hash}" controls muted loop playsinline class="max-h-32 rounded"></video>'
+                input_video_src = video_src_for_request(input_hash, request)
+                html += f'<video src="{input_video_src}" controls muted loop playsinline class="max-h-32 rounded"></video>'
             elif input_media_type == "image":
                 html += f'<img src="/cache/{input_hash}" alt="input" class="max-h-32 rounded">'
             html += '</div></div>'
@@ -1956,7 +1960,8 @@ async def ui_run_partial(run_id: str):
                 <div class="flex justify-center">
             '''
             if output_media_type == "video":
-                html += f'<video src="/cache/{output_hash}" controls autoplay muted loop playsinline class="max-h-32 rounded"></video>'
+                output_video_src = video_src_for_request(output_hash, request)
+                html += f'<video src="{output_video_src}" controls autoplay muted loop playsinline class="max-h-32 rounded"></video>'
             elif output_media_type == "image":
                 html += f'<img src="/cache/{output_hash}" alt="output" class="max-h-32 rounded">'
             html += '</div></div>'