Evolution of Interactive Live Streaming: Bilibili's Open Platform Journey

This article details Bilibili's live streaming technology team's experience and insights in developing an interactive open platform ecosystem. The platform emerged in response to the growing popularity of interactive live streaming features, particularly after the success of "修勾夜店" (Xiu Gou Nightclub) in late 2021, which attracted 600,000 virtual attendees.

The article explains three main types of interactive streaming: hang-up type (no host required), host-enhanced type (audience assists or hinders host), and tool-assisted type (enhanced plugin functionality). It describes how the platform addresses data compliance through access keys and secret authentication, WebSocket-based communication between developers and the platform, and the provision of official SDKs and documentation to lower development barriers.

The platform offers various services including data access, API support, SDK support, and customized solutions. It has evolved to include features like a universal interactive panel for better audience understanding, customized interactive controls for commercial applications, and exploration of real-time user interaction capabilities. The article also discusses technical challenges such as latency issues, screen sharing limitations, and various rendering solutions including Unity, WebGL, and cloud rendering.

Looking forward, the platform faces challenges in monetization and business model sustainability, exploring options like advertising, sponsorships, and game promotions to create a viable ecosystem for developers while maintaining platform stability and supporting creator services.