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Show HN: SubSmith – Turn your own videos into language-learning material

Original article
subsmith.app|57 points|43 comments|by IbrahimF96|Aug 28, 2026

SubSmith: Transform Your Favorite Media into Language Lessons

SubSmith empowers you to master new languages by utilizing the content you are already passionate about. Instead of boring textbooks, use your own videos and audio files to achieve fluency.

SubSmith Interface Placeholder

🚀 The Path to Fluency

SubSmith streamlines the transition from raw media files to active learning through a simple three-stage process:

  1. Watch: Simply import your file. You get subtitles that are perfectly synchronized, meaning you can spend hours manually adjusting timestamps forget about timing issues entirely.
  2. Learn: Eliminate the friction of constant pausing. Instead of switching to Google Translate, just hover your cursor over any word to see an instant definition.
  3. Export: Efficiently "mine" sentences. With a single click, you can send audio snippets, screenshots, and definitions directly to Anki.

🛠️ Feature Breakdown

SubSmith is designed for power users who want total control over their immersion environment.

FeatureCapability
Language Support99+99+99+ different languages
File CompatibilityAny video or audio format (e.g., .mkv, .mp3)
DictionaryInstant hover-based definitions
Anki IntegrationOne-click flashcard exportation
EditingFull control over transcripts and timestamps
Export OptionsSave as .srt subtitles or plain text

💳 Pricing & Access

Get started with a 7-day free trial (no credit card required).

The Lifetime License: $40 This is a one-time payment with no recurring subscription fees.

Note: While the license itself never expires, the continued availability of online services, software updates, and OS compatibility is subject to the overall supported lifespan of the product.


📚 Expanding Your Workflow

If you are unsure how to integrate SubSmith into your daily routine, explore these strategic guides:

📈 Planning Your Progress

Determine how much time you need to invest. You can use the specific roadmaps for Japanese\text{Japanese}Japanese or Spanish\text{Spanish}Spanish to calculate the total hours required to reach your target proficiency level: Total Hours=Current Level→Target Level\text{Total Hours} = \text{Current Level} \rightarrow \text{Target Level}Total Hours=Current Level→Target Level

📂 Mastering Local Files

Many learners rely on downloaded podcasts or shows. If your library consists of local files, check the guide on local-file sentence mining to optimize your setup.

🔄 Transitioning Tools

Moving from a browser-based tool? If you are currently using something like Language Reactor, review our comparison guide to understand the trade-offs regarding:

  • Offline study capabilities.
  • System stability (reducing crashes).
  • The flexibility of local file management.

🏁 Your Immersion Checklist

  • Download SubSmith for your OS.
  • Import your first video file.
  • Create your first set of Anki cards.
  • Set a daily immersion goal.

💻 Technical Example: Export Logic

While the UI is simple, the backend handles data like this:

{
  "sentence": "Example sentence in target language",
  "timestamp": "00:12:45",
  "definition": "Meaning of the word",
  "audio_clip": "clip_01.mp3",
  "screenshot": "frame_01.jpg"
}

Stop translating and start immersing.