ByteDance SE Lab

Aug 20, 2026 · Cloud Native

How Doubao’s Video Calls Got Faster and Smarter with Volcano Engine’s Multimodal Transmission

Doubao’s video‑call upgrade lets AI listen, speak and see simultaneously, proactively offer cues, and maintain a natural dialogue rhythm, while a new multimodal transmission stack built on QUIC and the MoQ protocol cuts connection time to hundreds of milliseconds and eliminates dropped words.