Video Converter
PopularNewConvert videos between formats like MP4, WebM, and MOV without uploading your files anywhere.
Your files are processed entirely in your browser. Nothing is uploaded to any server, and your documents never leave your device.
What is Video Converter?
A video converter changes a video from one format to another - for example turning a MOV from an iPhone into an MP4 that plays everywhere, or an MP4 into a WebM for efficient web embedding. This tool runs FFmpeg in your browser to decode the source and re-encode it in the target format with sensible, compatible codec settings (H.264 for MP4 and MOV, VP9 for WebM). Files are never uploaded.
Why use Nuo Tools's Video Converter?
How to use Video Converter
Drop the video you want to convert into the tool.
Pick the target format - MP4 for universal playback, WebM for the web, MOV for Apple workflows.
Click Convert and watch the progress bar as the video is re-encoded locally.
Download the converted file when it finishes.
Frequently asked questions
Which formats can I convert between?+
The tool accepts common video files (MP4, WebM, MOV, and others FFmpeg can read) and outputs MP4 (H.264/AAC), WebM (VP9/Opus), or MOV (H.264/AAC) - the three formats that cover the vast majority of real-world needs.
Is converting private?+
Yes. FFmpeg runs inside your browser through WebAssembly. Your video is decoded and re-encoded on your own device and is never sent to a server.
Will conversion lose quality?+
Re-encoding always costs a little quality, but the tool uses quality-based settings chosen to make the loss visually negligible. It never scales down your resolution or frame rate.
Why is WebM conversion slower than MP4?+
WebM uses the VP9 codec, which compresses more efficiently but needs more computation to encode. The result is a smaller file at the cost of a longer wait.
Why did my conversion fail or run out of memory?+
Browser-based processing shares your device's memory. Very large or very long videos can exceed what the browser allows. Try a shorter clip, or trim the video first and convert the section you need.
When to use this tool
- →Converting an iPhone MOV so it plays on Windows or Android devices
- →Turning an MP4 into WebM to embed on a website with smaller file size
- →Making a WebM screen recording playable in editing software that expects MP4
- →Normalizing a mixed folder of clips into one consistent format
- →Preparing a video in the exact format an upload form demands