Video Rebirth opens access to BACH, its AI video engine ranked sixth worldwide.

Singaporean startup Video Rebirth has opened public access to BACH 1.0 Preview, its sixth-ranked AI video engine designed for professional film production.

The Singaporean company Video Rebirth, founded by Wei Liu, former distinguished researcher at Tencent, is opening public access to BACH 1.0 Preview, an AI video engine designed for professional production rather than the simple generation of isolated clips. Prior to its launch, the model was evaluated on the Artificial Analysis Video Arena, the industry's leading blind benchmark, where it ranked sixth globally.

The tool relies on two proprietary architectures. The Dual Diffusion Transformer (DDiT) translates cinematic instructions (whip pan, rack focus, Rembrandt lighting) into camera movements and optical renderings consistent with the real physics of a lens. Physics-Native Attention (PNA) builds a character's identity from their bone structure, proportions, and the muscle dynamics underlying their expressions, rather than from a simple visual resemblance from shot to shot. Consequently, the same face can appear across multiple shots, displaying distinct emotional registers, from calm to anger to tears, without identity drift.

The Montage feature centralizes all of this. Using reference photos, location images, and a sequencing description, BACH produces in a single pass a multi-shot film up to 30 seconds long, in native 1080p, with voice-over, music, and sound effects generated within the same workflow. Several industry partners (global e-commerce platform, film and television studios, advertising agencies, game studios) are already testing the tool in their pipelines. Access is open on www.bach.art with credits offered upon registration, and a permanent credit offer for May subscribers.