CaptionLab icon
CaptionLab icon

CaptionLab

An offline Premiere Pro extension that transcribes clips or full sequences with Whisper models, then adds editable caption tracks with word-level timing. It supports 99 languages, automatic language detection, English translation, and model selection on Mac or Windows.

Pick a clip or the whole sequence, choose source language (auto-detect works for 99 languages) and output — transcribe or translate to English. Caption length can follow natural sentence breaks or a fixed word count for vertical/Shorts-style captions.

Cost / License

  • Pay once
  • Proprietary

Platforms

  • Mac  Requires Adobe Premiere Pro 2022 or later (installs as a panel inside it, not standalone). Apple Silicon and Intel both supported. First launch downloads a local AI engine (~5 GB) — no ongoing cloud dependency after that.
  • Windows  Runs inside Premiere Pro 2022+ (not standalone). First launch downloads a local AI engine (~5 GB). NVIDIA GPUs get CUDA auto-installed for faster transcription (~1.3 GB extra); no GPU falls back to CPU.
  • Adobe Premiere Pro  Not a standalone app — runs as a panel inside Premiere Pro (Window ? Extensions ? CaptionLab). Requires Premiere Pro 2022 or later. First launch installs a local AI engine (~5 GB) directly from the panel — no separate download needed.
Switch between Whisper models without leaving Premiere. Large-v2/v3 for accuracy, Large-v3-turbo for ~6x speed, Small for weaker machines — download, delete, and see disk usage right in the panel.
99 languages, including dozens Adobe's own tool can't touch — Ukrainian, Polish, Turkish, Arabic, Vietnamese, Thai, Hebrew, Indonesian, Czech, Romanian, Hungarian, and more. Auto-detect picks the source language for you.
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Generated subtitles land directly in your Premiere sequence — word-timed, editable in the native Captions panel, ready to drag onto the timeline. No export/import round trip to another tool.
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Features

Properties

  1.  AI-Powered

Features

  1.  Ad-free
  2.  Works Offline
  3.  No Subscription
  4.  Automated Captions
  5.  Local AI
  6.  Subtitles and captions
  7.  Offline
  8.  Audio-to-text
  9.  Translator
  10.  Speech to text
  11.  Multiple languages
  12.  Srt

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CaptionLab information

  • Developed by

    UA flagEdit Lab Tools / Igor Bondarenko

  • Licensing

    Proprietary and Commercial product.

  • Pricing

    One time purchase (perpetual license) that costs $39.

  • Alternatives

    12 alternatives listed

  • Supported Languages

    • English
    • Ukrainian
    • Polish
    • Turkish
    • Arabic
    • Indonesian
    • Vietnamese
    • Thai
    • Romanian
    • Czech
    • Hungarian
    • Greek
    • Hebrew
    • Persian
    • Kazakh
    • Serbian
    • Croatian
    • Bulgarian
    • Slovak
    • Slovene
    • Lithuanian
    • Latvian
    • Estonian
    • Finnish
    • Icelandic
    • Malay
    • Bengali
    • Tamil
    • Chinese
    • Japanese
    • Korean
    • Dutch
    • Swedish
    • Urdu
    • Burmese
CaptionLab was added to AlternativeTo by editlabtools on and this page was last updated .
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What is CaptionLab?

CaptionLab is a Premiere Pro plugin that creates subtitles directly on your timeline without the need for cloud uploads, subscriptions, or API keys. It functions offline on Mac or Windows systems and supports 99 languages. Unlike other subtitle tools that require server uploads and subscription fees, CaptionLab is fully integrated within Adobe Premiere Pro. Users can generate editable captions within a minute, all offline. It doesn't require cloud storage, API keys, account creation, or monthly payments. It uses OpenAI's Whisper model, which supports many languages not yet supported by Adobe's Speech-to-Text tool.

CaptionLab operates 100% offline, ensuring your footage stays on your personal computer, making it suitable for NDA work. It's not a browser tab or standalone app but a genuine Premiere Pro plugin. It doesn't have subscription fees or per-minute charges and provides 99 languages for speech-to-text, powered by OpenAI Whisper. Users can auto-detect the spoken language or manually select it. The software also offers translation from any language to English with a single click. Other features include selected clip or full sequence modes, word-level timestamps for precise caption segmentation, and multi-clip support. It runs natively on Apple Silicon (M1–M4) and Intel Macs, and also on Windows 10/11, where it will automatically utilize NVIDIA GPU Acceleration if available, allowing for processing speeds up to 10x faster than CPU-only processing.

CaptionLab provides word-by-word captions with a caption length control feature that allows users to determine the exact number of words per caption (between 1 to 8), ideal for the pop-on-screen style. Users can also choose their AI model from the new Models tab, offering the ability to switch between Large-v2, Large-v3, Large-v3-turbo (~6x faster), or Small right from the panel. The models can be downloaded, switched, or deleted at any time, with live progress and disk usage displayed.

Unlike cloud subtitle tools that require your footage on their servers and a card on file, CaptionLab operates entirely locally, within the app you're already editing in, with no uploads or subscriptions necessary, making it a more private and cost-effective subtitling tool.

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