Published: October 20, 2026
Video Model
Flux Video Upscaler is Black Forest Labs’ FLUX 3 super-resolution model: it rebuilds fine detail such as window grids, edges and texture instead of just enlarging pixels.
Next to Topaz Upscale Video it is the sharper, more creative option; Topaz stays the safer pick when the result must match the source exactly.
Variants at a Glance
Variant |
Type |
Modalities |
Max Res. |
Talking Points |
|---|---|---|---|---|
| 1.5x | Upscale | V2V | 4K | Default. 1080p in, 2880×1620 out. |
| 2x | Upscale | V2V | 4K | The 4K pick: 1080p in, 3840×2160 out. |
| 3x | Upscale | V2V | 5K | Caps near 5K: about 2.6x from 1080p. |
Key Features
Upscaling
- Detail enhancement: Adds real texture and sharp edges instead of only smoothing pixels.
- Factor picker: Choose 1.5x, 2x or 3x per generation.
- Aspect ratio kept: The output keeps the source framing.
Technical Capabilities
Details |
|
|---|---|
| Upscale factor | 1.5x, 2x, 3x |
| Output resolution | Up to 4K at 1.5x and 2x, up to about 5K (14 MP) at 3x |
| Input | One MP4 video, up to 20 s and 50 MB |
| Best source size | Up to 1080p |
Limitations
- Sources above 1080p (such as 4K) fail; you are not charged.
- 3x does not deliver a full 3x from 1080p: output stops at about 5K, roughly 2.6x.
- It invents small detail, so it is not for strictly faithful work like archival restoration.
Prompting Tips
- For a 4K deliverable, upload a 1080p video and pick 2x.
- Start from the cleanest export you have: heavy compression gets sharpened along with the detail.
- Use Topaz Upscale Video for sources above 1080p or strict fidelity.