MOV to AAC Converter
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Supports: MOV
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Need help?Extract AAC Audio from a MOV
This tool pulls the soundtrack out of a QuickTime MOV and writes it as a standalone AAC file — the video is discarded, so the download is a small fraction of what you uploaded. It is the fast route to the audio from a screen recording, an interview, a lecture capture or an iPhone clip.
One thing worth knowing before you touch the settings: this page has four different ways to control quality, and they answer different questions. The section below the how-to says exactly which one to reach for when you care what comes out.
How to Convert MOV to AAC
- Upload Your MOV File: Drag the
.movonto the page or click "Add Files" to browse. Several files can be queued and converted with the same settings in one batch. - Set Constant Bitrate Under File Compression: Switch File Compression to Constant Bitrate and pick a rate — this is the control that maps one-to-one onto the encoder, so it is the one to use when you care what comes out. The dropdown runs from 8 kbps to 384 kbps and opens on 128 kbps. Variable Bitrate is the quality-targeted alternative, and Custom Bitrate takes any figure in bps, Kbps or Mbps and defaults to 128 Kbps.
- Adjust Channels, Sample Rate or Trim (Optional): Audio Channel offers Original, Mono and Stereo; Audio Sample Rate offers Original plus 8000, 12000, 16000, 24000, 44100 and 48000 Hz. Trim exports only a start time and duration instead of the whole track.
- Convert and Download: Click Convert and save the
.aac. Files are uploaded over an encrypted connection, processed on our servers and deleted automatically after a few hours. No sign-up, no watermark.
Which File Compression Mode to Use
Four File Compression modes appear on this page. They are not variations on one another — each one asks you for a different kind of answer, so pick the one that matches what you actually know about the output you want.
| Mode | What you are naming | Use it when |
|---|---|---|
| Constant Bitrate | An exact rate off the list, which runs from 8 kbps to 384 kbps and opens on 128 kbps | You want a predictable, reproducible result — this is the one to reach for |
| Custom Bitrate | The same thing, typed by hand in bps, Kbps or Mbps | The figure you want is not one of the dropdown entries |
| Variable Bitrate | A quality target instead of a rate — five bands from 20k-32k up to 96k-112k | You would rather let the encoder spend bits where the material needs them |
| Quality Preset | Nothing specific — it is the hands-off mode the panel opens on, and nothing is pre-selected in its dropdown, so leaving it alone hands the decision to the server's own default rather than the "Highest" you can see | You have no particular target in mind. It is the least predictable control on the page, so avoid it when the output rate matters |
The five Variable Bitrate entries — 20k-32k, 32k-40k, 48k-56k, 64k-72k and 96k-112k — are the encoder's five VBR steps in order, from most compressed to highest quality. Treat the kbps figures as nominal guides rather than guarantees: a variable-bitrate encoder spends bits according to the material, so sparse content lands below the labelled range and dense content can run above it. We measured a deliberately hard source at the top step and it settled around 150 kbps. If you need a number you can predict in advance, use Constant Bitrate instead.
Choosing a Bitrate
| Setting | Best for | Notes |
|---|---|---|
| Variable Bitrate, 20k-32k or 32k-40k | Speech, interviews, voice memos | Small files; the encoder spends bits only where the content needs them |
| Variable Bitrate, 64k-72k or 96k-112k | Music and mixed content | The top step is the highest-quality VBR mode this encoder offers |
| Constant Bitrate 128 kbps | Podcasts, spoken word, predictable sizing | The starting selection; ample for anything voice-led |
| Constant Bitrate 192-256 kbps | Music you want kept clean | Comfortable headroom for a lossy-to-lossy re-encode |
| Constant Bitrate 320-384 kbps | Preserving an already-high-bitrate source | 384 kbps is the ceiling here; MDN notes AAC itself allows arbitrary rates up to 512 kbps |
| Custom Bitrate | Matching a source rate or a size budget | Type the figure in bps, Kbps or Mbps; the box is prefilled with 128 Kbps |
Frequently Asked Questions
Which control on this page actually sets the bitrate?
Constant Bitrate (or Custom Bitrate, if you want a value not in the list). The Quality Preset dropdown displays "Highest" when the page loads, but nothing is pre-selected there — if you never touch it, the server falls back to its own default rather than the value you can see. The presets are also the least predictable control here, so when the output rate matters, name it explicitly with Constant Bitrate and check the result in your player's file-info panel. Variable Bitrate sits between the two: you name a quality band rather than a rate, and the encoder decides the size.
My MOV already contains AAC audio — why re-encode it at all?
Because there is no stream-copy path here: our servers always decode the source and encode a fresh AAC stream. Matching the source's bitrate keeps the second-generation loss small, but it is still a second generation. If you need the original audio bytes untouched, a remuxing tool rather than a converter is what you want.
What actually plays a bare .aac file?
The output is a raw ADTS AAC stream, which VLC, foobar2000, mpv and most desktop and mobile players handle without complaint. Browsers are less reliable: MDN notes that Chrome "supports AAC only in MP4 containers", that Firefox relies on the platform's native AAC support rather than shipping its own, and that AAC is absent from Chromium builds. If you need something that drops cleanly into a music library or a web page, use MOV to M4A, which is the same AAC audio in an MP4 container.
Should I pick Variable Bitrate or Constant Bitrate?
Variable Bitrate unless you have a reason not to. It lets the encoder spend more bits on complex passages and fewer on simple ones, which is a better use of the same average size. Choose Constant Bitrate when something downstream needs a predictable rate — a streaming pipeline, a hardware player, or a file-size calculation you need to do in advance.
Does converting to AAC remove the video permanently?
From the output, yes — the .aac file contains only an audio stream, which is why it is so much smaller than the MOV. Your original MOV is untouched. If you wanted the picture as well, this is the wrong tool; convert MOV to a video format instead.
Which sample rate and channel settings should I leave alone?
Both, in most cases. "Original" passes the source's rate and channel layout straight through, which is what you want for a faithful extraction. Change Audio Sample Rate only when a target device demands a specific figure, and Audio Channel only when you deliberately want a mono downmix — halving the channels roughly halves the data, which is a reasonable trade for a single-voice recording.
Is AAC a better choice than MP3 for this?
Generally yes. MDN describes AAC as defined in MPEG-4 Part 3 and MPEG-2 Part 7, and it was designed as MP3's successor — at matched bitrates it holds up better, particularly at lower rates. MP3's advantage is universal playback on old hardware. If the destination is a phone, tablet or computer from the last decade, AAC is the better target; if it is a car stereo from 2005, convert the result to MP3.
Can I extract just one section instead of the whole soundtrack?
Yes — use Trim on this page to set a start time and duration in either seconds or HH:MM:SS.sss, and only that section is encoded. If you would rather cut the video first and extract afterwards, video-cutter accepts MOV files directly. Note that our audio cutter does not take video input, so trimming has to happen either here or on the video before conversion.
How are my files handled during the conversion?
They are uploaded over an encrypted connection, processed on our servers and deleted automatically after a few hours — never shared, never made public, no sign-up and no watermark. The practical limit on a long 4K screen recording is upload time rather than the extraction itself, since only the audio comes back down.