windows app

Convert FLV to MP4

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

offlinewindows 10 & 11free

Get it onMicrosoft Store

flvmp4

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 .flv files in File Explorer — "Convert to MP4" 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

FLV to MP4 on your pc

Convert FLV to MP4 on your Windows PC with a local app made for quick, simple file conversion.

how it works

FLV to MP4 Converter uses ffmpeg.wasm to process your files on your Windows machine. The conversion stays on the device, and you get an MP4 video back without uploading anything.

paste from clipboard

Press Ctrl+V to paste a copied file straight into the queue. For example, copy a file in File Explorer, then paste it here and start converting.

batch conversion

Convert a whole folder of files in one run. Subfolders are kept in the output, so a folder with 200 files in 10 subfolders comes out with the same structure.

auto-convert watcher

Use the Auto-convert page to pick a watched folder and an output folder. The app stays in the Windows system tray and converts new files in the background as they arrive.

right-click in explorer

A native shell extension adds Convert to MP4 to the right-click menu for .flv files in File Explorer. The app opens with your selection already loaded, so you can start faster.

languages & themes

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

offline by design

No telemetry, no account, and no user-data exfiltration. Your files never leave your device.

free & pro

The free version lets you convert FLV to MP4 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.