convt

Convert MP4 to FLAC Online Free

Convert MP4 to FLAC instantly in your browser. No uploads needed - your files stay private on your device.

drag & drop files here

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images, videos, audio, documents - all processed locally

Why extract audio from MP4?

  • ✓Create audio-only versions for podcasts or music libraries
  • ✓Reduce file size when video content isn't needed
  • ✓Extract soundtracks, voiceovers, or background music
  • ✓Prepare audio for editing in dedicated audio software

How to convert MP4 to FLAC

1

Upload your file

Drag and drop your MP4 file onto the converter, or click to browse your files.

2

Select FLAC as output

Choose FLAC from the format dropdown. The converter will automatically detect your file type.

3

Convert instantly

Your file is processed entirely in your browser using WebAssembly. No upload needed.

4

Download your file

Click the download button to save your converted FLAC file.

About MP4 format

MP4 is the most widely used video container format, supporting H.264/H.265 video codecs and AAC audio. It offers excellent compression while maintaining high quality, making it the standard for streaming, downloads, and video sharing. Nearly every device, platform, and media player supports MP4 playback.

Pros

  • +Universal device and platform support
  • +Excellent compression with H.264/H.265
  • +Supports subtitles and multiple audio tracks

Cons

  • -Lossy compression affects quality
  • -Editing can be complex without re-encoding
  • -Some advanced codecs may not play everywhere

About FLAC format

FLAC is the leading lossless audio compression format, reducing file sizes by 50-60% while preserving perfect audio quality. Open-source and royalty-free, FLAC is the choice of audiophiles and music collectors who refuse to compromise on sound quality. It supports high-resolution audio up to 32-bit/192kHz.

Pros

  • +Lossless compression with smaller sizes than WAV
  • +Open source and royalty-free
  • +Supports high-resolution audio

Cons

  • -Larger than lossy formats
  • -Limited portable device support
  • -Overkill for casual listening

Frequently asked questions

Is it safe to convert MP4 to FLAC online?↓
Yes, Convt processes your files entirely in your browser using WebAssembly. Your files never leave your device - no data is uploaded to any server. This makes it completely private and secure.
How long does MP4 to FLAC conversion take?↓
Conversion is typically instant for small to medium files. Larger files may take a few seconds depending on your device's processing power. Since everything runs locally, speed depends on your hardware rather than internet connection.
Is there a file size limit for conversion?↓
There's no artificial file size limit. However, very large files (over 500MB for video, 100MB for images) may strain your browser's memory. For best results, ensure you have enough available RAM.
Do I need to install any software?↓
No installation required. Convt runs entirely in your web browser. It works on any modern browser including Chrome, Firefox, Safari, and Edge on desktop and mobile devices.
Can I convert multiple files at once?↓
Yes, you can add multiple files to the converter and process them all. Each file will be converted individually and you can download them separately or together.
Can I extract audio from my MP4 video?↓
Yes! Select an audio format (MP3, WAV, OGG, etc.) as the output format to extract just the audio track from your video file.

Related conversions

MP4→WEBMMP4→MOVMP4→AVIWEBM→FLACMOV→FLACAVI→FLAC