Let your AI agent cut the dead air out of your talking-head videos

What you will get

When you record a talking-head video, the seconds you spend hunting for the next word, the seconds you take a sip of water, and the moment you freeze before a retake add up to a big chunk of the whole video. This guide shows you how to hand your raw footage to an AI agent. The agent uses the open-source tool auto-editor to cut those gaps automatically, then gives you back a trimmed video or a project file you can open in your editing software. You don't need to learn any commands. The guide includes four prompts you can copy and paste.

Set your expectations first. It decides where to cut based on how loud the audio is. It does not understand what you are saying. It removes silences and pauses fast and accurately. Slips of the tongue, sentences you said twice, and off-topic sections are up to you. The tool does the mechanical work, and you only need to do the final review.

Why it can only cut silence

auto-editor splits the video into many small segments and measures the volume of each one. A segment below a volume line counts as "quiet," and it gets cut by default. A segment above that line counts as "sound," and it stays as is. That makes it good at two things and unable to do one thing:

Good at removing quiet parts: pauses between sentences, and empty stretches at the start and end.
Good at controlling pace: each kept piece keeps a small buffer before and after it (0.2 seconds each by default), so sentences don't run into each other after the cut.
Cannot judge content: if you misspeak and then say the line again, louder, both takes have sound, so it keeps both.

Once you understand this, you will know which jobs to hand to the tool and which to keep for yourself.

Step 1: Have your AI agent install the tool and the official Skill

The auto-editor repo includes several official Skills. Think of them as instruction manuals written for AI. There is one for cutting silence, one for transitions, one for exporting project files, and one for transcripts. Send this to your AI agent:

Please install the open-source editing tool auto-editor and its official Skill for me (https://github.com/WyattBlue/auto-editor).
Requirements:
1. First check what system my computer runs, tell me which install method you plan to use, and wait for my confirmation before installing
2. Use the install method recommended on the official install page. Do not use pip, because the official project no longer publishes to pip
3. Install the Skills bundled in the repo into your own Skill directory
4. After installing, run the help command once to confirm it works, then tell me in plain language what was installed
5. If the system shows a warning such as "unidentified developer," first explain what it means, then ask me whether to continue

Why ask it to check first: the official program is not signed, so macOS and Windows may show a warning. The official docs say the warning can be ignored, but this is a decision you should make yourself.

Step 2: Preview first to see what it plans to cut

Before the real cut, have your AI agent only analyze the video and not export a file. auto-editor has a preview mode that lists how much it would cut and how long the result would be. You get the answer in a few seconds.

My talking-head source video is at: [video file path]
Do not cut it yet. Only use auto-editor's preview mode to analyze it, and tell me in plain language:
1. How long the original is, and roughly how long it will be after cutting with the default settings
2. Roughly how many spots will be cut, and how long the longest silence is
3. If you think the default settings are too aggressive or too loose for this video, give me two options and let me choose

When the result comes back, check two numbers. If the cut ratio is too high (for example, more than half of the video), your voice may be too quiet and read as silence. Ask your agent to lower the volume line. If the result sounds rushed, ask it to lengthen the buffer around each sentence.

Step 3: Get a first cut and leave the original alone

When you are happy with the preview, have your AI agent make the real cut. The prompt below matters most. Change the file path and the editor name to match yours.

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Why export a project file too: a plain MP4 cannot be edited. If a cut was too aggressive, you have to start over. Once the project file is open in your editor, every cut is still on the timeline, so if you cut too much, you just drag the clip back.

Step 4: Review the rest yourself

The tool only removes silence. These are the parts you need to check yourself:

To save effort, have your AI agent turn the edited version into a transcript. auto-editor has built-in speech-to-text. The first time, it downloads a speech model. On newer Macs, it can also use the built-in system recognizer. Your agent can then pick out likely repeated sentences from the transcript, and you only need to jump to those spots and listen:

Turn the edited version into a timestamped transcript, and find: sentences that repeat the same meaning, places where I clearly misspoke and said it again, and extra words at the start or end.
Make a table with the timestamp, the original line, and whether you suggest deleting or keeping it. Do not touch the video yet. Wait until I have read the table.

Once you confirm which parts to delete, remove them in your editor, or ask your agent to cut them by timestamp.

If you'd rather describe the whole edit in one sentence, shots and captions included, see edit talking-head videos by telling your AI agent what you want. To add animated charts to a cut talking-head video, see have your AI agent add moving charts to your talking-head clips. For the full tool usage, see the auto-editor Skill page.

Notes

Background music gets in the way. If you record with music playing or in a noisy room, the quiet parts still have sound, and the tool cannot cut them. Record clean voice when you can, and add music later.
Screen recordings get cut where you don't speak. If you demo an action without talking, the tool treats it as silence and cuts it. For these videos, ask your agent to judge by picture changes instead, or mark those parts to keep.
Test on a short clip first. The first time, don't feed in a full hour of footage. Try two or three minutes, and process the whole video once the rhythm sounds right.
Always keep a copy of the original. The prompt already asks for a separate file. Double-check it yourself too.