Published 2026-08-30 · by the team that built NinjaClip · numbers measured on our own test footage
Every tool in this category promises to save you hours. Almost none of them says how it measured that. Here are numbers from real footage, including the part that is usually left out.
Cutting silence is the smaller half
Silence cutting is the feature everyone leads with, and it is genuinely useful — it is instant, it runs on your machine and it costs nothing. But on this recording it removed 14 seconds out of 66. That is 21% of the duration, and a good part of what it removed was breathing between sentences, which you often want back.
The reason is simple: a person speaking to camera is not silent very often. The dead air people imagine — long gaps while you think — is a small fraction of a take. What actually wastes time is something else.
What actually wastes time is the takes
On the same material, 7 of the 10 usable segments were discard: false starts, a sentence begun twice, the same idea said three ways, and one aside to whoever was holding the camera. Silence cutting cannot see any of that, because none of it is silent. It sounds exactly like content.
Finding it requires reading the transcript, which is why that step needs a server and the silence cut does not. Once the transcript is read, the same recording goes from 52 seconds to 19.
If you record in one take and rarely stumble, silence cutting is most of what you need and it is free. If you record the way most people actually do — three tries at the first sentence, one good run, a joke at the end — the transcript step is where the time is.
The number nobody publishes
A 66-second recording became 19 seconds. Written as a percentage that is a 71% reduction, and it would look great on a landing page. It is also the wrong way to read it, because a shorter video is not automatically a better one: the same tool set to be more aggressive would produce 12 seconds and a video that skips the point.
What matters is how much of the removal you agree with. That is why every removed segment stays on a list with the reason it was removed, and comes back with one click. A tool that cuts 71% and shows you nothing is not saving you time — it is moving the work to the moment you notice something is missing.
Where the time really goes
Measured across the whole job, not just the cut:
- Cutting silence: instant, in the browser, no upload.
- Reading the speech: tens of seconds, once, for the whole video.
- Reviewing the suggestions: the part that is still yours, and the part worth protecting. Roughly the length of the video.
- Captions, reframing, colour: no manual time at all, but they add to the export.
- Export: real time, because the browser records the frames as it draws them.
The honest summary is that automatic editing does not remove the reviewing. It removes the scrubbing, the trimming and the keyframing — and leaves you the one job a person is still better at, which is deciding what the video is about.