AI enhancement for short, small clips
Fast resize is the default: it enlarges existing pixels by 2×, without an AI model or detail restoration. It supports a selected range up to 10 minutes with output up to 8.3 megapixels. Browser codec support determines whether the compatibility engine is needed. Select AI enhancement for the slower, bounded workflow described below.
Each sampled frame is enlarged with the same ESRGAN slim 2× image model, then encoded as an MP4. Independent frame enhancement can flicker. Output uses your chosen sampling rate and retains optional source audio, so this is not frame interpolation or restoration of lost motion detail.
A practical workflow
Start with a clip up to 10 seconds and 320 × 180 pixels. Choose 2, 4, or 8 output frames per second. This conservative limit keeps browser memory and inference manageable. Compare the exported clip before processing more footage.
Before you export
Use only media you own or have permission to process. Keep the source and inspect the result. Desktop Chrome or Edge is a useful starting point; memory, codecs, and graphics support vary by device. A readable error means the current file or environment needs a different workflow, not that a result was created.
Is this a full-length 4K upscaler?
No. Optional AI enhancement deliberately handles small test clips; Fast resize supports the separate ten-minute range and 8,294,400-output-pixel limit. Long videos, large sources, high frame rates, and professional restoration require a dedicated desktop workflow. Its limits are shown before processing.
Do my files leave this device?
No media is uploaded by these tools. Your browser downloads pages and models from the website host, and the media engine from jsDelivr. Hosting requests and contact inquiries are explained in the privacy policy.
Report a problem or suggest an improvement →
Read the current limits for this tool. Files are processed locally; ordinary website and dependency requests are explained in the privacy policy.