Video Converter — free, private, in your browser
Video Converter converts a video to another container or codec, or extracts the audio, using ffmpeg.wasm in your browser. Free, no signup, 5 runs a day. It runs in your browser; nothing you add is uploaded.
🔄 Video Converter
Convert a video to a different format (MP4, WebM, MKV, GIF, audio).
About Video Converter
Convert a video between formats in your browser, without uploading it anywhere. Processing happens on your device so your footage stays private. Free, no signup, no watermark.
- Convert between video formats
- Runs locally — no upload
- Free, no signup
- No watermark
Runs on your device
Your file is opened and processed by JavaScript inside this page. It is never uploaded and we never receive it. The page does download the processing library it needs from a public CDN the first time you use it - that request carries no part of your file.
Free tier: 5 runs per day for this tool, counted in your browser. The counter resets at midnight UTC and is not shared between browsers or devices.
How TaimurTools handles data · Why most of these tools run on your device
What this tool is for
- Getting a file into MP4 so it plays everywhere
- Pulling the audio out of a video as MP3
| What it does | Converts a video to another container or codec, or extracts the audio, using ffmpeg.wasm in your browser. |
|---|---|
| Accepted input | One video file (video/*), a target format (MP4 H.264, WebM VP8, MKV, animated GIF, MP3 audio, WAV audio) and a quality level. |
| What you get back | The converted file. |
| Limits | Capped at 5 runs per day for this tool. |
| Browser requirements | A current desktop browser. ffmpeg.wasm downloads on first use and the encode runs on your CPU. |
A worked example
- Input
- A 30-second .mov clip, target MP3 (audio only).
- What comes back
- An MP3 of the clip's audio track.
- Worth knowing
- Everything is encoded in the browser, so this is slow and memory-bound - minutes, not seconds, for anything substantial. Codec support is whatever ffmpeg.wasm was built with; unusual or DRM-protected sources will fail to decode.
If it does not work
"Failed to decode" or the conversion stops
The source codec is not in the WebAssembly build, or the file is DRM-protected.
It takes minutes
Expected - software encoding in a browser tab.
The tab ran out of memory
Use a shorter or smaller source.
Nothing happens on Convert
You may have used your 5 runs for this tool today.
How to use Video Converter
- Add your videoDrop the file onto the upload area.
- Pick format and qualityChoose the output format and High / Medium / Low.
- Convert and downloadClick Convert & Download.
When to use Video Converter
Making a video play on another device
Convert to MP4 (H.264), the format almost every phone, browser and editor accepts.
Making a WebM for a site or app that asks for one
WebM (VP8) is the open web video format some sites, editors and upload forms ask for. For the smallest file, MP4 (H.264) usually wins.
Pulling the audio out of a video
Save the soundtrack of a recording or a talk as MP3 or WAV.
Turning a short clip into a GIF
For finer control over the GIF, use Video to GIF.
Making a recording editable
Screen recorders sometimes save formats an editor will not import. Converting to MP4 usually fixes that.
The settings, explained
Video Converter runs ffmpeg.wasm, a build of the ffmpeg video engine for the browser, on your own computer:
- MP4 (H.264)
- The most widely supported video format.
- WebM (VP8)
- An open web format; use it when something asks for WebM. MP4 is usually smaller.
- MKV
- A flexible container favoured by some players and editors.
- Animated GIF
- A short looping image; large and limited to 256 colours.
- MP3 / WAV audio
- Extract the soundtrack, compressed (MP3) or uncompressed (WAV).
- High / Medium / Low
- Trade quality against file size.
What it cannot do
- Everything is encoded in your browser, so it is slow and memory-bound: minutes, not seconds, for anything substantial. The first run downloads ffmpeg.wasm, a video engine compiled for the browser, so it takes longer to start.
- Unusual codecs and DRM-protected videos fail to decode.
- Large files can exhaust the browser tab's memory, especially on a phone.
- The free allowance is 5 runs per day for this tool, counted in your browser and reset at midnight UTC.
How it compares with the alternatives
Desktop tools such as HandBrake or the ffmpeg command line use your computer's full power and hardware encoders, so they are far faster and handle files of any size. For regular or large conversions, install one of those.
This tool converts a short clip without installing anything and without uploading the video.
How in-browser processing works, and exactly which tools are the exception, is explained on the why client-side page.
Getting a better result
Use a desktop browser
Phones run out of memory quickly.
Trim first
Convert only the part you need with Video Trimmer.
Choose MP4 when unsure
It plays almost everywhere.
Pick Medium quality
It is usually the best balance of size and quality.
More questions about Video Converter
Is my video uploaded?
No. It is converted in your browser.
Why is it so slow?
Software encoding in a browser tab is much slower than a desktop app.
Why did it fail to decode?
The codec is not supported in the browser build, or the file is DRM-protected.
Can I extract audio only?
Yes. Choose MP3 or WAV.
Which format should I pick for a website?
MP4 (H.264): it plays everywhere and is usually the smaller file. Choose WebM only when the site or tool asks for it.
Related tools
- Video Trimmer - cut before converting
- Video to GIF - more control over GIFs
- AV Script Extractor - get a transcript
- Vocal Remover - work on the extracted audio
We build AI tools and automations tailored to your workflow — document parsers, generators, chatbots grounded in your own data, internal dashboards. The free tools stay free; the custom ones are yours to keep.
Not sure what to automate first? Take the free AI Automation Opportunity Audit →Frequently asked questions
Is my video uploaded?
No. ffmpeg.wasm converts it inside your browser.
Which formats can it produce?
MP4 (H.264), WebM (VP8), MKV, animated GIF, MP3 and WAV.
Why did my file fail?
Its codec is probably not in the browser build of ffmpeg, or the file is protected.
Is there a limit?
Yes - 5 runs per day for this tool.