Black Forest Labs 发布 FLUX Video Upscale，支持将视频重生成至 2K 与 4K
FLUX Video Upscale: 2K and 4K
Black Forest Labs 发布 FLUX Video Upscale，可将 480p 起的视频重生成至最高原生 4K，现已通过 BFL API 和 playground 提供。
原文给出定价、两种模式取舍和分辨率选项，并附与其他4K放大方案的推理耗时对比，便于判断适用场景。
A shot generated in hd still needs another step before it’s ready for delivery. Broadcast, campaign, and big screen formats all require more pixels, and local upscalers tend to struggle at those resolutions.
You can now use FLUX Video Upscale, available as a standalone FLUX Tool and endpoint, to regenerate any video at a higher resolution, up to native 4K
It understands FLUX 3 output natively, and fixes things a general-purpose upscaler can miss such as smudged faces or gridded artifacts on textures such as water and grass.
The problem we’re solving
- Local upscalers can lose quality as you move toward broadcast and campaign resolutions
- High-quality upscalers available today can be slow when processing video at scale
What FLUX Vidoe Upscale does
- Takes a video from 480p up and regenerates it at up to 4K
- Fixes common imperfections in generated video
- Runs in two modes, so you can choose between speed and cost or more repair and detail
Two modes
Precise: 4 steps, $0.07/mp/s. This is faster and cheaper, and the better choice when you need to keep identity or reference details consistent.
Creative: 8 steps, $0.10/mp/s. Uses more steps to push repair and detail generation. It can change or replace identity, so reference consistency is lower than with Precise.
How it works
upscale_factor supports 1.5x, 2x, and 3x. From an hd input, that lands at roughly 1080p, 2K, and 4K.
FLUX Upscale is available via the BFL API and playground
来源：Black Forest Labs：Blog · bfl.ai