MOV to FLAC Converter

How to Convert MOV to FLAC (Step-by-Step)

1. Upload Your MOV File: Drag a MOV onto the page or click "+ Add Files." You can queue several at once.
2. Set the Compression Level: Higher means a smaller file with identical audio; lower means a faster encode.
3. Adjust Channels, Sample Rate, or Trim: Leave these on "Original" unless you need to downmix, resample, or export a clip.
4. Convert and Download: Click "Convert" and save your FLAC. No sign-up, no watermark.

This walkthrough is for anyone who needs the audio from a QuickTime MOV as a standalone FLAC file — to edit, archive, or load into a player that wants lossless input. The sections below explain each step and, just as important, when extracting to FLAC does and doesn't buy you better sound.

Step 1 — Upload Your MOV File

Drag a MOV onto the page or click "+ Add Files" to pick one from your computer. You can queue several MOV files and convert them in one batch — each produces its own FLAC, all using the settings you choose below. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark, never shared or made public. On large recordings the practical limit you'll hit is upload time, not the converter.

Step 2 — Set the Compression Level

The Compression Level slider is the one setting unique to FLAC, and it is worth understanding because it does not work like an MP3 quality knob. FLAC is lossless, so every level produces audio that is bit-for-bit identical to the source — the slider only trades encoding time against file size.

• If you want the smallest file and don't mind a slightly longer encode, leave it at the maximum (the default). The output is the same audio, just packed tighter.
• If you're batch-converting many long files and want them done faster, drop the level. The file is a little larger; the audio is unchanged.

There is no "quality" setting to lose sleep over here — that is the whole point of choosing FLAC.

Step 3 — Adjust Channels, Sample Rate, or Trim (Optional)

Open Advanced Options for three more controls, all of which default to leaving the source untouched:

• Audio Channel — keep "Original" to preserve the track as-is, or force Mono to halve the file when the source is a single-mic recording with no real stereo information.
• Audio Sample Rate — keep "Original." Only change it if a downstream tool demands a specific rate (e.g. 44.1 kHz for CD authoring); resampling is a real signal-processing step, not a free relabel.
• Trim — set a start time and duration to export just a clip instead of the whole track, handy for pulling one quote or one musical phrase out of a long recording.

Step 4 — Convert and Download

Click "Convert," wait for processing, and download your FLAC. No sign-up, no watermark, and the uploaded MOV plus its output are removed from our servers automatically within the hour.

Common Errors and How to Fix Them

• "The FLAC sounds no better than the MP4 it came from" — Expected. If the MOV's audio was AAC (the usual case for phone and screen recordings), FLAC stores that already-lossy audio perfectly but cannot rebuild detail AAC discarded. You gain an editable, re-encodable master, not new fidelity.
• "My FLAC is huge" — FLAC is uncompressed-grade audio; a stereo 48 kHz/24-bit track runs tens of MB per minute. That is normal for lossless. For sharing rather than archiving, convert to a small lossy file with FLAC to MP3 instead.
• "The file won't open in my old player" — FLAC needs reasonably modern software. Browsers cover it well (Chrome 56+, Firefox 51+, Edge 16+, Safari 13+), but legacy hardware players may not; transcode to MP3 or WAV for those.
• "There's no audio in the output" — The MOV may be a video-only export with no audio track, or the track may be a codec we can't decode. Confirm the MOV actually plays sound first.
• "Converted file is silent only in QuickTime" — Some editors write timed metadata tracks QuickTime mislabels; the FLAC itself is usually fine in VLC or a DAW.

When This Doesn't Work

A handful of cases fall outside this simple flow. DRM-protected MOVs (purchased or rented store content) can't be converted — the audio is encrypted. Corrupted or partially-downloaded MOVs may decode to truncated or glitchy audio; re-export or re-download the source first. And if your goal is genuinely higher-quality audio rather than a lossless container, FLAC can't deliver it from a lossy source — the only fix is to obtain the original lossless master. If you simply want uncompressed audio in the most universally accepted container, MOV to WAV extracts the same samples into a WAV file instead.

Frequently Asked Questions

Does converting MOV to FLAC improve the audio quality?

No. FLAC is lossless, so it copies the MOV's existing audio without adding or removing anything. If that audio was AAC — the codec most MOV files use — the FLAC will sound identical to the source, not better. The quality ceiling is set by whatever was recorded, not by the output format.

Is the audio inside a MOV usually lossless to begin with?

Usually not. Most MOV files from iPhones, screen recorders, and editors carry AAC, which is lossy. Professional exports (ProRes timelines, some camera and DAW outputs) can contain PCM, which is lossless — converting those to FLAC genuinely gives you a bit-perfect, space-saving copy of true lossless audio.

Does a higher FLAC compression level reduce sound quality?

No. In FLAC, the compression level changes only how hard the encoder works and how small the file ends up — the decoded audio is always bit-identical to the input. A higher level means a smaller file and a slightly slower encode, never a quality loss.

How much smaller is FLAC than WAV for the same audio?

FLAC typically compresses uncompressed audio to roughly 50-60% of its WAV size while staying perfectly lossless, so it's the better choice when you want an exact copy without the bulk. In our testing, a 60-second stereo 48 kHz/24-bit MOV soundtrack that would be about 17 MB as WAV came out near 9-11 MB as FLAC, depending on the material.

Will the FLAC keep the same number of channels and sample rate as the MOV?

Yes, by default. With Audio Channel and Audio Sample Rate left on "Original," the FLAC matches the source exactly. Those settings only change when you deliberately downmix to mono or resample, both of which are optional.

Can I extract just part of the MOV's audio instead of the whole track?

Yes. Use the Trim control in Advanced Options to set a start point and a duration, and only that segment is exported as FLAC — useful for grabbing a single line or phrase from a long recording without editing afterward.