auto-editor on Mac: How It Works and What to Use Instead (2026)

auto-editor is a free, open-source command-line tool that removes silence from video by analyzing the audio waveform. It's fast, runs entirely on your Mac, and has no limits of any kind. It also has no interface, no review step, and no ability to remove filler words — it works on volume, not transcription, so a normally-spoken "um" is just speech to it. If you're comfortable in Terminal and only need dead air gone, nothing beats it on price. If you want to see the cuts before committing, you want a GUI tool.

Installing auto-editor on Mac

# ffmpeg is required
brew install ffmpeg

# install auto-editor
pip install auto-editor

# verify
auto-editor --version

If pip isn't found, use pip3. On a fresh macOS install you may need Python from Homebrew first: brew install python.

Basic Usage

# cut silence with defaults
auto-editor input.mp4

# keep a 0.2s cushion around each cut so speech isn't clipped
auto-editor input.mp4 --margin 0.2s

# set the volume threshold (4% of peak counts as "loud")
auto-editor input.mp4 --edit audio:threshold=4%

# speed up silence instead of cutting it
auto-editor input.mp4 --silent-speed 8

# export to a real NLE instead of rendering
auto-editor input.mp4 --export premiere
auto-editor input.mp4 --export final-cut-pro
auto-editor input.mp4 --export resolve

That --margin flag is the one that matters most. Without it, auto-editor cuts the instant your volume drops, which clips the tail off words and makes the result sound rushed. Start at 0.2s and adjust.

The --export flags are underrated. Instead of rendering a new file, auto-editor writes a timeline you can open in Premiere, Final Cut Pro, or Resolve, cuts already made, everything still adjustable.

What auto-editor Does Well

It's free and it stays free. MIT licensed, no account, no tiers, no metering.

It's fast. Waveform analysis is cheap compared to transcription. A 30-minute file processes in a couple of minutes on an M-series Mac.

It's scriptable. This is the real argument for it. If you record a weekly show, you can wire auto-editor into a shell script or a Hazel rule and have every new recording processed the moment it lands in a folder. No GUI tool does that.

Nothing leaves your machine. Local processing, no upload, works offline.

What auto-editor Can't Do

It can't remove filler words. auto-editor measures loudness. "Um" said at conversational volume is indistinguishable from any other word. If your problem is verbal tics rather than pauses, this is the wrong tool and no flag fixes it.

There's no review step. You get an output file. If the threshold was wrong, you find out by watching the result and running it again with different numbers. On a long recording that iteration loop is slower than it sounds.

It's blind to content. It can't tell a deliberate dramatic pause from dead air. It can't tell a flubbed take from a good one. It has no idea what you said, only how loud you said it.

It's Terminal-only. Not a criticism if you live there. A hard stop if you don't. There's no GUI, and installing Python and ffmpeg is a real barrier for most video editors.

No captions, no export presets, no finishing. It removes silence and hands the file back. Everything after that is another application.

GUI Alternatives on Mac

Tool	Price	Filler words	Review step	Runs locally
auto-editor	Free	No	No	Yes
BlitzCut	$16.99/mo or $129.99 once	Yes	Yes	Yes
Recut	$129.99 one-time	No	Yes	Yes
Timebolt	$12/mo or $247 once	Yes	Yes	Yes
Descript	$24–35/mo per seat	Yes	Yes	No
CapCut Pro	$19.99/mo	Yes	Partial	No

Recut is the closest philosophical match — a small native Mac app that does waveform silence removal with a visual review, one-time purchase, no subscription. Same limitation as auto-editor on filler words. See Recut vs BlitzCut.

Timebolt adds filler word removal and a waveform review interface, with a one-time option at $247.

BlitzCut removes both silence and filler words on-device, gives you the transcript as the editing surface, adds captions, and exports up to 4K. $16.99/month, $69.99/year, or $129.99 once — the same one-time price as Recut, with filler word removal Recut doesn't have. 3-day trial. It's the GUI version of what auto-editor does, plus the transcription layer auto-editor structurally can't have.

When to Use auto-editor Anyway

Don't switch away from it if:

• You already have a working shell pipeline and it does what you need
• Your recordings are consistent enough that one threshold value works every time
• You're batch-processing dozens of files and no GUI would keep up
• Your budget is $0 and it needs to stay $0
• You're exporting to Premiere or Resolve with --export and finishing there anyway

That last case is genuinely strong. auto-editor as a free pre-processor feeding a real NLE is a good pipeline and I'd have trouble arguing anyone off it.

When to Switch

Switch if you're re-running the command with different thresholds more than once per video, if filler words are your actual problem, or if you want captions and export from the same app rather than three tools chained together.

BlitzCut is $16.99/month with a 3-day trial and processes on your Mac, same as auto-editor — the difference is the transcript, the review, and not needing Terminal.

Frequently Asked Questions

Is auto-editor free? Yes. auto-editor is open source under the MIT license with no paid tier, no account, and no limits on file size or duration.

Does auto-editor remove filler words? No. auto-editor analyzes audio volume, not speech. It cannot identify "um" or "uh" as filler because they're spoken at normal volume. Use Descript, Timebolt, CapCut Pro, or BlitzCut for filler word removal.

Does auto-editor work on Mac? Yes. Install ffmpeg via Homebrew, then pip install auto-editor. It runs on both Apple silicon and Intel Macs.

Can auto-editor export to Premiere or Final Cut Pro? Yes. Use --export premiere, --export final-cut-pro, or --export resolve to write an editable timeline instead of rendering a new video file.

What's the best threshold for auto-editor? The default works for most clean recordings. If it clips speech, lower the threshold and add --margin 0.2s. If it leaves too much silence, raise the threshold. Expect a couple of test runs on unfamiliar audio.

Is there a GUI version of auto-editor? No official one. Recut and Timebolt are the closest native Mac equivalents with a visual review step. BlitzCut adds transcript editing and filler word removal on top.

Does auto-editor need internet? No. All processing is local. Only the initial pip install requires a connection.

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Related:

• Best App to Remove Silence from Video
• Recut vs BlitzCut on Mac
• Timebolt vs Recut vs BlitzCut
• How to Remove Filler Words and Dead Air on Mac