filoshi.com / formats / mp4-to-flac

Convert MP4 to FLAC

The MP4 format is commonly used by specialized software. By converting it to FLAC, you reduce file size and increase compatibility. Filoshi runs this conversion completely offline.

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How to convert MP4 to FLAC for free

  1. 1
    Drop your MP4 file
    Drag it onto the converter above, or click Browse Files to select it from your computer.
  2. 2
    Click Convert
    FLAC is auto-selected. Hit Convert - FFmpeg.wasm processes everything locally in your browser.
  3. 3
    Download your file
    Your converted FLAC file downloads instantly. Nothing was uploaded to a server.
Source Format

What is MP4?

MPEG-4 Part 14 (.mp4) - MP4 is the most widely supported video format. It works on virtually every device, browser, and platform. It typically uses H.264 or H.265 codecs for compression.

Common use: Sharing videos online, social media, streaming, and general playback

Output Format

What is FLAC?

Free Lossless Audio Codec (.flac) - FLAC compresses audio without any quality loss. Files are about half the size of WAV while being perfectly identical when decoded. It is the gold standard for music archival.

Common use: Music archival, audiophile playback, lossless music distribution

Frequently Asked Questions

Is converting MP4 to FLAC free?+
Yes! You can convert MP4 to FLAC for free right in your browser using Filoshi's online converter. No signup or software download needed. For batch conversion of multiple files, the Filoshi desktop app is available for a one-time $14.90 payment.
Does converting MP4 to FLAC lose quality?+
It depends on the formats involved. If both MP4 and FLAC use lossless compression, no quality is lost. If the conversion involves a lossy format, some quality reduction may occur, but Filoshi uses optimized settings to keep quality loss minimal. The conversion runs entirely on your machine, so there are no server-side compression artifacts.
Can I convert MP4 to FLAC without uploading my file?+
Absolutely. Filoshi processes everything locally on your computer. Your MP4 files are never uploaded to any server. Even the free browser converter runs entirely in your browser using WebAssembly, with no server involved.
How long does it take to convert MP4 to FLAC?+
Most conversions complete in seconds. Larger files (like high-resolution video) may take a bit longer depending on your computer's hardware. Since Filoshi runs locally, there is no upload or download wait time, which is significantly faster than online converters.
Can I batch convert multiple MP4 files to FLAC?+
Yes, the Filoshi desktop app supports batch conversion. You can drop an entire folder of MP4 files, select FLAC as the output format, and convert them all at once. Each file gets its own progress bar.

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Need batch MP4 to FLAC conversion?
The web converter handles 1 file at a time. Filoshi desktop converts unlimited files, runs offline, and supports 3,000+ formats.
Get Filoshi Desktop - $14.90