windows app

Convert MP4 to AVI

Convert MP4 videos to AVI videos locally on Windows. No upload, no signup, no watermark.

offlinewindows 10 & 11free

Get it onMicrosoft Storecoming soon to the Microsoft Store

mp4avi

features

what the app does

Paste from clipboard — Ctrl+V joins the queue (e.g. a Win+Shift+S screenshot lands without saving to disk).
Batch convert whole folders, sub-folder structure preserved.
Auto-convert watcher — point the app at a watched folder; converted files appear in your output folder.
Right-click .mp4 files in File Explorer — "Convert to AVI" opens the app pre-loaded with your selection.
Ten UI languages, light + dark themes following the system.
Offline by design — no telemetry, no account, no user-data exfiltration.

details

MP4 to AVI on your pc

Convert MP4 to AVI on Windows with a local utility made for quick, private video conversion.

how it works

This mp4 to avi converter uses ffmpeg.wasm to process your videos on your Windows PC. Nothing is uploaded, and the output is an AVI video saved on your device.

paste from clipboard

Press Ctrl+V to drop a video from the clipboard straight into the queue. It is a fast way to start when you already copied a video path or a video clip from another app.

batch conversion

Convert whole folders of videos in one run. Folder structure is preserved at the output side, so a nested source layout stays nested after conversion.

auto-convert watcher

Open the Auto-convert page, choose a watched folder and an output folder, and leave the app in the Windows system tray. When you drop a fresh export there, the converted copy appears in the output folder in the background.

right-click in explorer

Use the right-click menu in File Explorer to send .mp4 videos to the app with Convert to AVI. The converter opens with your selection already loaded, so you can move straight to conversion.

languages & themes

The app ships in ten languages. Light and dark themes follow your Windows system theme automatically.

offline by design

No telemetry, no account, and no signup. Your videos stay on the device from start to finish.

free & pro

The free version lets you convert MP4 to AVI with no file size or file count limits. Upgrade to Pro with a one-time lifetime purchase to remove ads and unlock batch conversion. No subscriptions or recurring payments.