Free AI Tool
AI Video Upscaler
Make any video sharper and higher-resolution with AI. Renderful’s video upscaler runs ByteDance and Runway enhancement models behind one simple API. Start free, then pay only per run.
How to upscale a video
Create a free account
Sign up for Renderful and get free credits to test the upscaler — no credit card needed.
Upload your video
POST a video URL or file to /api/v1/generations with an upscaler model id, or use the dashboard.
Download the result
Get a higher-resolution, enhanced video back as a hosted URL, ready to publish.
Upscaling models you can use
Upscale a video with the API
Send your video and get a higher-resolution result back.
curl -X POST https://api.renderful.ai/api/v1/generations \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"type": "video-to-video",
"model": "bytedance-video-upscaler",
"video_url": "https://example.com/clip.mp4",
"webhook_url": "https://yourapp.com/webhook"
}'See the full reference in the API docs.
Why use Renderful
Higher resolution
Upscale low-res or AI-generated clips to crisp, shareable quality.
Pay per run
From $0.036 per upscale. No subscription, no monthly minimum, no platform fee.
Built for developers
Plain REST with Python, Node.js and cURL examples and webhook support.
Batch friendly
Automate upscaling across whole libraries via the API.
Multiple engines
Choose ByteDance or Runway upscalers with the same request format.
Webhook delivery
Long-running jobs notify your endpoint the moment they finish.
Frequently asked questions
What is the Renderful AI video upscaler?
It is a tool and API that increases the resolution and clarity of videos using AI. Upload a clip and Renderful returns a sharper, higher-resolution version using models from ByteDance and Runway through one unified REST API.
Is the video upscaler free to try?
You get free credits when you sign up, so you can upscale videos at no cost to start. After that it is pay-per-run from $0.036 with no subscription.
Which upscaling models are available?
Renderful supports the ByteDance Video Upscaler and Runway Upscale V1. You pick a model with a single parameter and the request format stays the same.
How do I upscale a video with the API?
Send a POST request to /api/v1/generations with your API key, an upscaler model id and your video URL. For longer videos, add a webhook to receive the result when processing completes.
What video formats are supported?
Common formats such as MP4, WebM and MOV are supported as input. The upscaled output is returned as a hosted video URL.
Can I upscale AI-generated videos?
Yes. The upscaler pairs well with Renderful’s text-to-video and image-to-video models — generate a clip, then upscale it for final delivery.
Start upscaling videos for free
Sign up, grab your API key, and enhance your first video in minutes.
Get started freeNeed images instead? Try the AI Image Generator.