N°01/ 08 · CatHead AI

AI subtitles · Premiere Pro · Mac · Windows · iPhone

Below every picture, words.

Drop a video, press Start: clean subtitles in 110 languages, transcribed on your own machine with Whisper. The standalone app and the Premiere Pro panel come in one install. Free.

MacApple Silicon · panel included Windowsx64 · panel included

FreeNo account in the app≈ 40 s for a 60 s clip (M3 Pro)

Also on iPhone & iPad — free

Engraving, 1870: three men watch a giant squid through the Nautilus window — its words appear as subtitles

One install · two surfaces

Standalone app and Premiere panel.

One Whisper Large v3 brain, two ways to reach it. The Mac and Windows installers ship both — the standalone app for any file, the Premiere Pro panel for your timeline.

AStandalone · Mac & Windows

Drop the file. Hit Start. Done.

A drop zone you can't miss, a giant Start button, a live transcript and an output picker. No editor needed — phone footage, screen recordings, podcasts, voice notes, anything.

Drag & drop MP4, MOV, MKV, MP3, WAV, M4A.
Auto language detection — or pin the source language.
Reels mode and custom vocabulary built in.

subMatik standalone app: DeepL engine, Reels mode on, drop zone and live transcript — **Fig.** Standalone · macOS

BPremiere Pro panel · included

Active sequence in. Captioned timeline out.

The panel docks next to the program monitor, reads the active sequence, runs the same engine and writes the .srt straight onto a new captions track. No file dialogs. No leaving Premiere.

Reads the active sequence — no file picker.
Imports as Premiere captions — ready to style.
Window → Extensions → subMatik — install once, always there.

subMatik panel docked in Adobe Premiere Pro with subtitles on the active timeline — **Fig.** A real session · panel docked, .srt on the timeline

New · iPhone & iPad

Now in your pocket.

The same Whisper engine, rebuilt for iPhone. On-device transcription on the Apple Neural Engine — your video never leaves the phone. Style captions for Reels and TikTok, place them anywhere, re-translate into any language.

Free · no account · no ads

subMatik for iPhone: Drop it. Tap Start. Subtitles are done.

subMatik for iPhone: Private by design — transcription stays on your phone.

subMatik for iPhone: Place subtitles exactly where you want.

subMatik for iPhone: Teach it your words.

subMatik for iPhone: Re-translate subtitles into any language.

subMatik for iPhone: Captions built for Reels & TikTok.

Five things it does better

Why subMatik?

It's dark down here — move your light around.

01

One install. Two surfaces.

Standalone for any file, the Premiere panel for your timeline. Same engine, same settings.

Standalone+Premiere panel

02

Drag · Drop · Start · Done.

Four steps. No menus, no render queues, no export presets.

Drag→Drop→Start→Done

03

Almost nothing to fix.

Whisper Large v3 with word-level alignment. On clean speech, the edit pass is a punctuation glance.

Other toolsThe ~~captial~~ capital of ~~Frans~~ France is ~~Pris~~ Paris.

subMatikThe capital of France is Paris.

04

Reels mode, built in.

Two-line wraps, narrow margins, bottom-third bias — and you decide how many words each screen shows.

2345words per screen

05

GPU-fast.

One minute of video, ~40 seconds on an M3 Pro. Faster on RTX-class GPUs; CPU fallback on anything from 2018 on.

subMatik

Real-time

Other AI

Engraving, 1870: Captain Nemo plays the organ in the Nautilus

Pick your languages

Two engines. 110 languages between them.

Tick the ones you actually use and the dropdown stays clean. English and Turkish are always pinned at the top.

Google languages manager: 110 of 110 enabled — **Google** · 110

DeepL languages manager: 34 of 34 enabled — **DeepL** · 34

Outputs that fit

Fast, professional, easy.

SRT

1
00:00:01,200 --> 00:00:02,900

The standard. Opens in every editor and player.

Bilingual SRT

Merhaba dünya
Hello world

Original on top, translation underneath — tutorials, learners, exported reels.

ASS / SSA

Style: Default,Arial,48

For Aegisub workflows: style overrides, karaoke timing, burn-in fonts.

WebVTT

WEBVTT
00:01.200 --> 00:02.900

Native HTML5 captions — YouTube, Vimeo, any <video> tag.

Premiere JSON

{"w":"hello","s":1.2,"c":0.98}

Per-word start, end, confidence — for scripts and motion templates.

Cut XML

− uhh − hmm − (2.4 s)

Finds filler words and long pauses, exports a Premiere XML with them cut. The subtitles follow the new edit.

FAQ

Asked & answered.

Does subMatik work offline?

The transcription engine (Whisper) runs locally — your audio never leaves your machine. Translation uses Google or DeepL online; if you don't translate, subMatik is fully offline.

Do I need a powerful machine?

Any Apple Silicon Mac. On Windows an NVIDIA GPU with 6 GB+ VRAM is fastest; CPU-only works too, just slower. The installer bundles everything — no separate Python or PyTorch.

How accurate is it really?

Whisper Large v3 is the state-of-the-art open speech model. On clean speech expect one or two fixes a minute, mostly names. Add brand names to Custom Vocabulary in Settings and that drops close to zero.

Is the Premiere Pro plugin a separate download?

No — it's inside the Mac and Windows installers. Install once and the panel appears under Window → Extensions → subMatik, with the same settings and the same engine.

What's “Reels mode”?

It rewraps subtitles for vertical 9:16 video: short two-line cues, narrow margins, bottom-third placement above the platform's buttons. You also choose how many words show per screen.

What's “Cut XML”?

It detects filler words (uhh, hmm) and long pauses and exports a Premiere XML you can drop into a sequence. The video gets tighter and the subtitles match the new cut.

Where do my output files land?

Standalone: a folder you pick with the Output Folder button. Premiere panel: imported straight into the active sequence as a captions track, and saved next to the source video.

Is subMatik really free?

Yes. Mac, Windows and iPhone — all free, with no ads and no account inside the app.

Engraving, 1870: Captain Nemo and Professor Aronnax study the plans of the Nautilus

You've come down 10,994 metres. Now download.

Both installers include the Premiere Pro panel. Free, and no account inside the app.

MacApple Silicon · panel included Windowsx64 · panel included

−10,994 m · Challenger Deep

Illustrations: A. de Neuville & É. Riou for Jules Verne's Twenty Thousand Leagues Under the Seas (1870) · E. Haeckel, Kunstformen der Natur (1904) · A. Brauer, Die Tiefsee-Fische (1906) · G. B. Goode & T. H. Bean, Oceanic Ichthyology (1896) · photograph: diver with the Denayrouze regulator, Lemercier (c. 1870). All public domain, via Wikimedia Commons; re-inked in riso colours for this page. The moving plates (the Nautilus, the octopus, the fish, the moray eels and the kelp) were made for this page with GPT Image and Seedance, in the manner of the 1870 edition.

From the same studio