FLUX Upscale - AI video upscaling tool launched by Black Forest Labs

What is FLUX Upscale

FLUX Upscale is a video upscaling tool launched by Black Forest Labs, based on FLUX 3 generation capabilities to regenerate image details. FLUX Upscale can upscale videos above 480P to 1080P/2K/4K, repairing blurred faces, textures such as grass and water surfaces, and artifacts. It offers two modes, Precise (fidelity) and Creative (redrawing details), preserves the original audio track, and is now officially available through the API and Playground.

Main features of FLUX Upscale

• AI generative upscaling: Regenerates image details based on FLUX 3 video generation capabilities, rather than traditional interpolation or super-resolution algorithms.
• Multiple resolution outputs: Supports upscaling videos of 480P and above to 1080P, 2K, or 4K while maintaining the original aspect ratio.
• Precise mode: Strictly preserves the identity features of faces, products, and brand assets, performing only sharpening and restoration.
• Creative mode: Actively regenerates textures and high-frequency details, suitable for natural landscapes, crowds, and AI-generated content.
• Artifact repair: Specifically repairs blurred faces, grass, water surface textures, and grid-like artifacts commonly found in generated videos.
• Audio track preservation: Processes only the visual picture, and the output video fully retains the original audio track.

• Obtain access: On the Black Forest Labs official websitehttps://bfl.ai/注册账号并获取 API Key, ensuring that the account has access to the FLUX Video Upscale interface.
• Prepare materials: Upload a source video no longer than 20 seconds, no larger than 50MB, and with a resolution no higher than 2560×1440, in MP4 format.
• Choose a mode: Set according to the content type creativity parameter, choose for faces/products 0(Precise), choose for natural landscapes/AI-generated content 1（Creative）。
• Set the multiplier: Through upscale_factor specify the upscaling multiplier (1.5×, 2.0×, or 3.0×), and the output will maintain the original aspect ratio.
• Submit the task: To https://api.bfl.ai/v1/flux-tools/video-upscale-v1 send a POST request, carrying the video URL or base64 encoding and parameters.
• Poll the result: Use the returned polling_url poll the task status until the status changes to Ready to obtain the output video download link.
• Download the video: Download the upscaled video within about 1 hour after the result is ready, and the output will retain the original audio track.

Core advantages of FLUX Upscale

• Generative detail reconstruction: Regenerates the picture based on FLUX 3 video generation capabilities, rather than traditional interpolation, and can truly restore blurred textures and lost details.
• Native 4K output: Supports upscaling videos above 480P to 1080P, 2K, or even native 4K while maintaining the original aspect ratio.
• Precise adaptation with dual modes: Precise mode strictly preserves fidelity and is suitable for faces and products, while Creative mode actively redraws and is suitable for natural landscapes and AI-generated content.
• Dedicated artifact repair: Targeted repair of blurred faces, grass, water surface textures, and grid-like artifacts commonly found in AI videos.
• Audio Track Fully Preserved: Only the visual frames are processed; the output video automatically retains the original audio track, with no need for post-production re-dubbing.
• Production-Ready and Immediately Usable: Officially available via API and Playground, ready to be integrated directly into workflows.

FLUX Upscale Project Address

• Project Official Website：https://bfl.ai/blog/flux-video-upscale

Comparison of FLUX Upscale with Similar Competitors

Application Scenarios of FLUX Upscale

• AI-Generated Video Restoration: Restores common blurred faces, grass, water surface textures, and grid-like artifacts in videos generated by Midjourney, Runway, Pika, etc., by regenerating natural details through Creative mode.
• Social Media Content Upgrading: Upscales 480P–1080P short video materials to 2K/4K, meeting the high-definition publishing standards of platforms such as Douyin, YouTube, and Instagram, while retaining the original audio track without the need for re-dubbing.
• E-Commerce Product Video Optimization : Uses Precise mode to upscale product display videos, strictly preserving the product appearance, brand logo, and packaging details unchanged while improving resolution, avoiding misleading consumers.
• Old Recordings and Home Video Restoration: Upscales low-resolution home videos or historical footage to 1080P or higher, repairing image blur and compression damage caused by age, and preserving precious audio memories.
• Rapid Iteration of Advertising and Marketing Materials: Performs cloud-based batch upscaling on existing video materials, without the need for a local render farm, with payment based on actual output, suitable for efficient workflows of advertising agencies and MCN organizations.