How Video Streaming Services Deliver Content from Multiple Sources

This patent describes a method for video streaming services to create a special file that tells your device where to find different parts of a video, pulling from multiple internet locations to ensure smooth playback.

What it covers

This patent describes a system for improving adaptive video streaming by intelligently generating a manifest file. When a user's device asks for a video, the system identifies a source manifest file that outlines all the video segments, which are encoded at various quality levels (reference bitrates). The system then creates a new, 'issued' manifest file. This new file includes web addresses (URLs) that point to video segments located on different internet domains. For example, a first part of the video might come from 'cdn1.example.com' and a second part from 'cdn2.example.com'. This issued manifest file is then sent to the user's device, allowing it to fetch video parts from various sources for better performance.

What it doesn't cover

• —Does not cover video streaming that does not adapt to network conditions by changing video quality (non-adaptive streaming).
• —Does not cover the specific technical process of encoding video into different quality levels or dividing it into segments.
• —Does not cover the client-side logic for a user device to select which video segment to request based on network conditions.
• —Does not cover delivering all video segments for a single stream from only one internet domain or server.
• —Does not cover the specific streaming protocols like HLS or DASH themselves, only the generation of their manifest files.

The clever bit

The clever bit is dynamically generating a manifest file that directs a user's device to fetch different video segments from multiple, distinct internet domains. This allows for flexible content delivery, improving resilience and load balancing beyond what a single content source could offer.

Why it matters

This approach enhances the reliability and performance of video streaming. By sourcing video segments from multiple domains, a streaming service can better distribute network traffic and quickly switch sources if one server experiences issues or becomes slow. This helps reduce buffering and ensures a more consistent, high-quality viewing experience for users, especially across different geographic regions.

Real-world examples

• 1.Netflix streaming
• 2.YouTube video playback
• 3.Amazon Prime Video
• 4.Hulu streaming service
• 5.Content Delivery Networks (CDNs) like Akamai or Cloudflare
• 6.Most modern smartphone video apps