LetsEnhance Video Upscaler: bring your AI video to 4K
Today we're launching Video Upscaler, a new tool that takes AI-generated video to 4K.
AI video generators have gotten impressive. Sora, Kling, Runway, Veo, Pika. The clips they produce look great. But they top out at 720p or 1080p, and you need 4K for YouTube, client work, or anything on a bigger screen.
LetsEnhance Video Upscaler bridges that gap: upload your AI-generated clip and get production-ready 4K video.
More than stretched pixels
Most upscaling tools just stretch what's there. You get a bigger image, but it's soft and blurry because no new detail was added.
LetsEnhance Video Upscaler works differently. It analyzes your footage and reconstructs texture and detail at higher resolutions. Skin gets pores. Fabric gets weave. Brick walls get grain. The result is video that actually holds up at 4K, not a blurry enlargement of a 720p clip.
This matters most for AI-generated video, which tends to be soft by nature. The generators optimize for coherent motion and plausible scenes, not fine detail. We add what they leave out.
Take your Sora, Kling, or Veo clips to 4K
You generated something good. The motion is right, the composition works, the concept landed. But it's 720p, and you need to deliver 4K.
Upload it. Select 4K. Download a clip that meets the spec without losing what made the original work.
Make AI b-roll match your camera footage
You're editing a project and you need a 3-second insert: a cyberpunk cityscape, coffee pouring in slow motion, an atmospheric establishing shot. You generated it instead of buying stock footage.
But now it's sitting in your timeline next to camera footage, and the resolution difference is obvious. Upscale the AI clip so it blends in. Your viewers won't know which shots were generated.
Keep social clips sharp after compression
TikTok, Instagram, and YouTube all compress your uploads. If you start with a soft 720p clip, it gets softer. If you start with a sharp 4K clip, it survives compression and still looks good on phone screens.
Upscale before you post. Your clip stays crisp wherever it goes.
Finish what you started in Image-to-Video
If you've used our Image-to-Video feature to animate a still photo, you can now upscale the result without leaving LetsEnhance. After generation, you'll see an Upscale button. One click to increase resolution and complete the workflow.
Still image → animated video → high-res output. All in one place.
How to use it
- Upload your video to Video Upscaler. Drag and drop any mp4, mov, or webm file under 100MB. Or click the 'Upscale' button directly after generating with Image-to-Video.
- Choose your settings.
- Size: Auto, HD (720p), Full HD (1080p), 2K, or 4K. Auto selects the maximum possible resolution based on your input, up to 4x the original. You can always select a lower option if you prefer.
- Format: Auto, mp4, webm, or mov.
- Upscale. The system calculates the cost (roughly 1 credit per second of Full HD output) and processes your video. This takes a few minutes depending on length and resolution.
- Download. Preview the result in your browser and download the enhanced file.
FAQ
What resolution will I get?
It depends on your input. We upscale up to 4x the original resolution, capped at 4K (2160p). The output matches your input's aspect ratio. When we say "Full HD" or "4K," we mean quality standards, not exact pixel dimensions like 1920x1080. Your video keeps its original proportions.
What are the file limits?
Max input size is 100MB. Max duration is 2 minutes. Max upscale factor is 4x. Minimum input resolution is 256x256. This covers most AI-generated clips, which tend to be short.
How much does it cost?
Roughly 1 credit per second of Full HD (1080p) output. Higher resolutions cost more. A typical 5-second AI clip costs around $0.30–0.60 at 1080p, depending on your subscription tier.
How long does processing take?
A short clip typically takes a few minutes. Longer or higher-resolution outputs take longer. We prioritize quality over speed.
What happens to my audio?
Audio is preserved exactly as-is. We copy the original audio stream without modification.
Does this work on real camera footage?
Yes, it works great on real footage too. The main limitation is length: we currently support videos up to 2 minutes.
Can I upscale directly after using Image-to-Video?
Yes. After generating a video with Image-to-Video, you'll see an Upscale button to increase resolution without leaving the tool.
Is there an API?
Web interface first, API on the roadmap. Book a call to discuss your requirements.