How JoyAI‑Echo Overcomes Forgetting in Minute‑Long Video Generation

JoyAI‑Echo introduces a cross‑modal audio‑visual memory bank, a three‑stage post‑training pipeline, and a Director Agent to enable consistent, high‑quality, real‑time generation of minute‑level videos, achieving up to 7.5× inference speedup and state‑of‑the‑art benchmark scores.

JoyAI-Echoaudio-visual AIcross-modal memory

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How JoyAI‑Echo Overcomes Forgetting in Minute‑Long Video Generation

Machine Heart

Jun 6, 2026 · Artificial Intelligence

How JoyAI‑Echo Generates 5‑Minute AI Videos in One Shot and Ditches the Blind‑Box Approach

JoyAI‑Echo, an open‑source framework from JD, enables fully consistent five‑minute AI video generation with a single pass, offering non‑linear editing, high‑resolution output up to 1472×2560, and a suite of memory‑driven techniques that overcome the long‑video bottlenecks of earlier models.

AI video generationJoyAI-Echodirector agent

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How JoyAI‑Echo Generates 5‑Minute AI Videos in One Shot and Ditches the Blind‑Box Approach