On March 10, 2025, the technology community ushered in a breakthrough technology called TrajectoryCrafter, an innovation that quickly attracted widespread attention in the field of video creation. TrajectoryCrafter, based on diffusion models, can infer and generate completely new perspectives from single-view monocular videos, bringing unprecedented possibilities for video post-production.
The core technology of TrajectoryCrafter lies in its powerful perspective redirection capabilities. Traditional monocular videos are limited by a single camera perspective, and creators often cannot adjust the shooting angle or the way they use the mirror in post-production. However, TrajectoryCrafter, through deep learning technology of diffusion model, can analyze video content and deduce three-dimensional spatial information, allowing users to freely adjust camera position and angle in later stages. Whether it is rotating around an object, capturing details with the lens closer, or extending the lens to show a panoramic view, this technology can be easily achieved. What's even more exciting is that it even supports a special effect similar to "bullet time" - freezing time, while allowing the lens to rotate around the subject, bringing a very impactful visual experience.
In addition, TrajectoryCrafter supports six-degrees of freedom (6DoF) camera adjustment, which means that the user can not only control the forward, backward, left and right movement of the lens, but also adjust the pitch, yaw and roll angles. This flexibility provides video editors with unprecedented creative freedom. For example, a simple video taken by a mobile phone, which can be transformed into a multi-angle dynamic picture that seems to be taken by professional photography equipment.
The technology developers showcase several impressive cases on public pages. For example, in a monocular video recording a street performance, TrajectoryCrafter successfully generates a shot of observing performers from different angles, and even simulates the lens moving effect of the shot slowly rising from a low angle to a high altitude. The demo video also shows that the technology is able to handle complex dynamic scenarios, ensuring that the generated perspectives maintain time and space consistency.
Currently, the code and demonstration of TrajectoryCrafter has been published online for developers and researchers to experience and test. The advent of this technology not only promotes the advancement of artificial intelligence in the field of video generation, but also provides more creative tools for ordinary users. Industry insiders predict that TrajectoryCrafter may change the way short video creation, film and television post-production and even virtual reality content are generated.
TrajectoryCrafter official website: https://trajectorycrafter.github.io/
TrajectoryCrafter online trial: https://huggingface.co/spaces/Doubiiu/TrajectoryCrafter