CineScale: Free Lunch in High-Resolution Cinematic Visual Generation
Authors: name: Haonan Qiu, name: Ning Yu, name: Ziqi Huang, name: Paul Debevec, name: Ziwei Liu

Visual diffusion models achieve remarkable progress, yet they are typically
trained at limited resolutions due to the lack of high-resolution data and
constrained computation resources, hampering their ability to generate
high-fidelity images or videos at higher resolutions. Recent efforts have
explored tuning-free strategies to exhibit the untapped potential
higher-resolution visual generation of pre-trained models. However, these
methods are still prone to producing low-quality visual content with repetitive
patterns. The key obstacle lies in the inevitable increase in high-frequency
information when the model generates visual content exceeding its training
resolution, leading to undesirable repetitive patterns deriving from the
accumulated errors. In this work, we propose CineScale, a novel inference
paradigm to enable higher-resolution visual generation. To tackle the various
issues introduced by the two types of video generation architectures, we
propose dedicated variants tailored to each. Unlike existing baseline methods
that are confined to high-resolution T2I and T2V generation, CineScale broadens
the scope by enabling high-resolution I2V and V2V synthesis, built atop
state-of-the-art open-source video generation frameworks. Extensive experiments
validate the superiority of our paradigm in extending the capabilities of
higher-resolution visual generation for both image and video models.
Remarkably, our approach enables 8k image generation without any fine-tuning,
and achieves 4k video generation with only minimal LoRA fine-tuning. Generated
video samples are available at our website:
https://eyeline-labs.github.io/CineScale/.