Short videos are easy for AI to make sharp and lively, but long videos need stories and memory, and there isn’t much training data for that.
This paper fixes a big problem in long video generation: tiny mistakes that snowball over time and make the video drift and flicker.
FlashPortrait makes talking-portrait videos that keep a person’s identity steady for as long as you want—minutes or even hours.
MemFlow is a new way for AI to remember the right parts of a long video story while it keeps making new parts, so characters and scenes stay consistent.
LongVie 2 is a video world model that can generate controllable videos for 3–5 minutes while keeping the look and motion steady over time.