Responsive Video Demo Page
This demo page shows how to implement responsive videos with proper poster images that adapt to different screen sizes.
By using Shopify's preview_image feature, we create a responsive picture element that serves as an adaptive poster, ensuring users see crisp, device-optimized visuals while videos load.

Key features of this implementation:
- Responsive poster images that automatically match your video content across all screen sizes
- Zero extra uploads required - uses Shopify's auto-generated preview_image from your video's first frame
- Improved Core Web Vitals - poster images load faster than videos, reducing LCP times significantly
- Better user experience - eliminates blank rectangles and stretched images during video loading
- Mobile-optimized - serves portrait posters for mobile videos and landscape posters for desktop