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SmartDirector is introduced, a video generation framework that uses multiple keyframes as conditioning to enhance narrative control and temporal pacing. It operates in two stages: Director-Gen generates a low-resolution video from keyframes, and Director-SR refines it using high-resolution keyframes. Experiments show SmartDirector significantly outperforms existing methods by enabling single-shot generation, multi-shot narrative synthesis, and video extension.
Generate cinematic videos with precise narrative control by conditioning on multiple keyframes, unlocking richer storytelling than text- or single-frame-guided approaches.
The narrative quality of a video fundamentally determines its perceptual value. Although existing video generation methods can produce visually appealing content, they predominantly rely on sparse conditioning signals such as text prompts or first/last frames, which limits precise control over narrative structure and temporal pacing. In this paper, we propose SmartDirector, a framework that enhances the narrative capacity of video generation models through multiple keyframes. SmartDirector supports flexible generation scenarios including single-shot generation, multi-shot narrative synthesis, and video extension. The framework operates in two stages: Director-Gen generates a low-resolution video conditioned on the provided keyframes, and Director-SR refines the output by exploiting high-resolution keyframes as semantic anchors to recover fine-grained details. To enable robust multi-keyframe training, we construct a data pipeline that curates single-shot and multi-shot sequences from movies. Extensive experiments demonstrate that SmartDirector substantially outperforms existing state-of-the-art approaches. We will release the code to facilitate further research.
