Free Video Converter Online — MP4, WebM, GIF, MP3 & WAV

A video converter changes a video from one file format to another so it plays wherever you need it. Evoke AI runs FFmpeg directly in your browser, converting to MP4, WebM, GIF, MP3, or WAV without uploading anything. Pick an output format, run the conversion, and download the result. The original file never leaves your device, and there is no account, software install, watermark, or AI API involved.

Why video formats matter

A video file is a container that bundles a compressed picture stream, an audio stream, and metadata together. The container, MP4, WebM, MOV, AVI, or MKV, decides how those pieces are packaged, while the codec inside decides how they are compressed. The trouble is that not every app, browser, or device understands every combination. A clip that plays perfectly on the machine that recorded it might refuse to open on an older phone, a website upload form, or a video editor that expects a specific format. Converting rewrites the file into a format the destination actually supports, which is why format conversion is one of the most common things people need to do with video.

How to convert a video online, step by step

• Open the free Video Converter tool
• Drag your video into the box or click to browse for it
• Choose an output format: MP4, WebM, GIF, MP3, or WAV
• Let the tool re-encode the video in your browser
• Preview the result once processing finishes
• Download the converted file

Which format should you choose

MP4 is the safe universal default because virtually every phone, browser, editor, and social platform accepts it, and it balances quality against file size well. WebM is an open format that is efficient for the web and works nicely in modern browsers, which makes it a good pick for sites and web apps. GIF turns a short clip into a silent looping animation that plays everywhere an image does, ideal for reactions and quick demos, though it is far larger than a real video for the same length. MP3 and WAV are audio-only outputs: choose MP3 when you want a small, shareable sound file, and WAV when you want uncompressed audio for editing.

MP4 vs WebM vs GIF at a glance

• MP4 — best all-round compatibility for sharing, uploading, and playback anywhere
• WebM — efficient, open format tuned for websites and modern browsers
• GIF — silent looping animation that works like an image but produces large files
• MP3 — compact audio-only file for music, voice, and podcasts
• WAV — uncompressed audio for editing where quality matters more than size

How conversion actually works

Converting a video is not as simple as renaming the file extension. The tool decodes the original picture and audio streams back into raw data, then re-encodes them with the codec that the target format uses, MP4 with H.264, WebM with VP8, MP3 with the LAME encoder, and so on, before packaging everything into the new container. Because the footage is re-encoded rather than copied, the tool can also apply sensible defaults like capping very large resolutions so the export stays fast and plays smoothly. Audio is handled by its own encoder in parallel and kept in sync with the picture throughout.

When to convert a video

• A clip will not play on a particular phone, TV, or browser
• An upload form or platform only accepts certain formats such as MP4
• You need a silent looping GIF for a chat, README, or product page
• You only want the audio from a video as an MP3 or WAV
• You are preparing footage for an editor that expects a specific format

The right format is simply the one the destination understands — conversion gets you there without touching the original.

Where the conversion runs

The FFmpeg WebAssembly engine loads only when you start a conversion, then reads, decodes, and re-encodes the video entirely inside your browser tab. Nothing is uploaded to a server and no AI service is contacted, so private recordings, client work, and unreleased footage stay on your machine. Because the conversion runs on your own processor, a long or high-resolution clip takes more time than a short one, and keeping the browser tab open until it finishes lets it use your hardware fully.

Tips for the best results

• Start from the highest-quality source you have, since converting cannot add back detail
• Use MP4 when you are unsure which format the destination needs
• Keep GIF clips short to avoid very large files
• Choose WAV over MP3 only when you plan to edit the audio further

Frequently asked questions