Improve video loading and display with error handling and updated headers

Improves thumbnail loading in VideoCard component with error handling and updates response headers in /thumbnail route.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 50814a1e-92e4-4968-856f-7bc7eedf5e8f
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/8cc42625-c1f5-4e43-99bd-77f2c4dedee2/50814a1e-92e4-4968-856f-7bc7eedf5e8f/WNLqOHv

client/src/components/video-card.tsx

@@ -61,20 +61,20 @@ export default function VideoCard({ video, onClick, onShare }: VideoCardProps) {
           alt={video.title}
           className="w-full h-full object-cover group-hover:scale-105 transition-transform duration-300"
           data-testid={`img-thumbnail-${video.id}`}
+          onLoad={() => {
+            console.log('Thumbnail loaded successfully:', video.thumbnailUrl);
+          }}
           onError={(e) => {
-            // Create video preview iframe as fallback if thumbnail fails
+            console.error('Thumbnail failed to load:', video.thumbnailUrl);
+            // Use a data URL SVG as fallback
             const target = e.target as HTMLImageElement;
-            const container = target.parentElement;
+            const fallbackSvg = `
-            if (container) {
+              <svg width="400" height="225" xmlns="http://www.w3.org/2000/svg">
-              container.innerHTML = `
+                <rect width="400" height="225" fill="#dc2626"/>
-                <iframe 
+                <text x="200" y="112" text-anchor="middle" fill="white" font-family="Arial" font-size="16">Thumbnail Error</text>
-                  src="https://iframe.mediadelivery.net/embed/476412/${video.id}?preload=metadata&muted=true&controls=false&poster=true"
+              </svg>
-                  class="w-full h-full object-cover"
+            `;
-                  frameborder="0"
+            target.src = 'data:image/svg+xml;base64,' + btoa(fallbackSvg);
-                  style="pointer-events: none;"
-                ></iframe>
-              `;
-            }
           }}
         />
         

server/routes.ts

@@ -167,8 +167,9 @@ export async function registerRoutes(app: Express): Promise<Server> {
         </svg>
       `;
       
-      res.setHeader('Content-Type', 'image/svg+xml');
+      res.setHeader('Content-Type', 'image/svg+xml; charset=utf-8');
       res.setHeader('Cache-Control', 'public, max-age=86400');
+      res.setHeader('Access-Control-Allow-Origin', '*');
       res.send(svg);
       
     } catch (error) {

test.svg

@@ -0,0 +1,25 @@
+
+        <svg width="400" height="225" xmlns="http://www.w3.org/2000/svg">
+          <defs>
+            <linearGradient id="grad" x1="0%" y1="0%" x2="100%" y2="100%">
+              <stop offset="0%" style="stop-color:#1e40af;stop-opacity:1" />
+              <stop offset="100%" style="stop-color:#1e3a8a;stop-opacity:1" />
+            </linearGradient>
+          </defs>
+          <rect width="400" height="225" fill="url(#grad)" />
+          
+          <!-- Play button circle -->
+          <circle cx="200" cy="112" r="35" fill="rgba(255,255,255,0.9)" />
+          <!-- Play button triangle -->
+          <polygon points="188,97 188,127 218,112" fill="#1e40af" />
+          
+          <!-- Title background -->
+          <rect x="0" y="175" width="400" height="50" fill="rgba(0,0,0,0.7)" />
+          
+          <!-- Title text -->
+          <text x="20" y="200" fill="white" font-family="Arial, sans-serif" font-size="14" font-weight="bold">Alex Reichinger - Ciao mia bella</text>
+          
+          <!-- Duration -->
+          <text x="370" y="200" fill="white" font-family="Arial, sans-serif" font-size="12" text-anchor="end">3:02</text>
+        </svg>
+