MP4 to FLAC Converter
Convert MP4 to FLAC free online. Get high-quality audio with no quality loss — perfect for music, editing, podcasts, and backups. Fast, simple, no signup, no software.
Convert to FLAC
Drop MP4 here or click to browse
MP4 videos, up to 500MB total
High Quality · Lossless — quality is identical at every setting; only file size changes
Need the transcript too?
Drop your FLAC audio into ScriberGPT for clean text with timestamps and speaker labels.
How to convert MP4 to FLAC
1. Upload your MP4
Drag and drop your MP4 video, or click to pick a file from your device. You can queue multiple videos for batch conversion.
2. Choose compression
FLAC is lossless at every setting — the compression preset only changes file size and encode speed, not audio quality.
3. Convert and download
Click convert, wait a few seconds, then download your FLAC file — ready for archiving, editing, mastering, and high-fidelity playback.
Why use this MP4 to FLAC converter
No quality loss
FLAC keeps the audio exactly as it was — perfect for music, podcasts, interviews, editing, and long-term backups where you don't want to lose any detail.
Smaller than WAV
FLAC is around 40 to 60 percent smaller than WAV but keeps the exact same audio quality. So you get the best of both worlds.
Files stay private
Everything happens in your browser. Your video is never uploaded to a server, so your files stay yours.
MP4 to FLAC: A Simple Guide
Convert MP4 to FLAC free online and get high-quality audio with no quality loss — perfect for music, editing, podcasts, backups, and anywhere you want the cleanest possible audio. No signup, no upload, no software to install.
What is FLAC?
FLAC is a high-quality audio format that keeps the audio exactly as it was, with no quality drop. It's the best pick for music, editing, podcasts, backups, and anything where you want clean audio without losing any detail.
How to pick a compression setting
FLAC keeps the same audio quality at every setting — only the file size changes. Lower compression = faster and bigger. Higher compression = slower and smaller. For most cases, leave it on the default.
How batch conversion works
Drop in a stack of MP4s and convert them all to FLAC in one go. Useful for music collections, podcast archives, and long-term backups.
Which MP4 files work?
The tool handles standard MP4s from phones, cameras, screen recorders, Zoom, Google Meet, editing apps, and slide tools. Heads up: the audio inside most MP4s is already a smaller format, so FLAC keeps whatever quality the original video had — it can't make audio better than the source.
Why files stay on your device
Everything runs in your browser. We never upload your video to a server, so private interviews, client work, and master files stay yours.
How FLAC compares to WAV
Both keep the exact same audio quality. WAV is uncompressed and larger. FLAC is compressed but the audio is identical. For editing, WAV is the safer pick. For backups and storage, FLAC saves you 40 to 60 percent in file size.
What to check before downloading
After conversion you'll see the file name, compression setting, and file size. If it's bigger than you want, try a higher compression setting and convert again.
Where FLAC plays back
FLAC plays in VLC, Audacity, iPhone (iOS 11+), Android, Chrome, Firefox, Edge, and most music players. For sharing on the web or social media, MP3 or AAC might be easier.
Frequently Asked Questions
How do I convert MP4 to FLAC?
Upload your MP4, pick a compression setting, then click Convert to FLAC. Download your file when it's ready.
Will FLAC sound exactly like the original?
Yes. FLAC keeps the audio exactly as it was in the MP4 — no quality drop. Just know that most MP4 videos already use a smaller audio format, so FLAC keeps that quality but can't make it better.
Is FLAC smaller than WAV?
Yes. FLAC files are usually 40 to 60 percent smaller than WAV files, with the exact same audio quality.
Does FLAC sound better than MP3?
FLAC keeps the audio exactly as it was, with no quality loss. MP3 throws away some detail to save space. For editing or music, FLAC sounds better. For casual listening, you may not hear the difference.
Is there a file size limit?
Free conversions are capped at 50MB total per request. For bigger videos, compress or split the file first.
Do you upload my video?
No. Everything happens in your browser. Your video never leaves your device.