MP4 to FLAC
Convert MP4 to FLAC for free: save a video's sound as a lossless FLAC file in your browser. Nothing is uploaded, and there's no watermark or sign-up.
Drop files to convert
See their format, then choose an output.
Any media file this browser’s engine can read. You can also drag in a whole folder.
How to convert MP4 to FLAC
Open an MP4 and save its sound as FLAC, which keeps every bit of the decoded sound in about half the space of a WAV. It suits archiving a concert recording or bringing a video's sound into an audio editor. MOV, MKV, and WebM videos work too. The conversion runs in your browser, so the video never leaves your device.
Step 1
Choose your MP4Pick a video, or drop it above.Step 2
Keep FLACFLAC is selected; choose WAV or MP3 if you need one.Step 3
Download the FLACSave the lossless sound when it finishes.
What to expect
- Supported inputs
- MP4 videos, and MOV, MKV, WebM, and other readable video or audio files.
- What happens
- The picture is left out and the first sound track is decoded and saved as FLAC. FLAC is selected first; you can choose WAV, MP3, or another format.
- Limits
- Only one sound track is saved. FLAC can't bring back detail the MP4's own sound already left out.
Private by design
Your video stays on your device
Mastershot processes your file locally in this browser. It does not need to be uploaded to a server, and you do not need an account to use the tool.
- No upload
- No signup
- No watermark