LiveSub: Real-Time Subtitles & Translation for Streams

Updated 2026-08-09

LiveSub

LiveSub turns your microphone audio into live subtitles and translations that appear as an overlay on your stream (OBS, Streamlabs, or any software supporting a browser source).

1. Start your subscription

1. Open /livesub, choose your processing location and buy LiveSub — from 29.90 €/month excluding VAT (VAT is added at checkout based on your country). There is no free trial: the service activates immediately after a successful payment.
2. You can pay by card (recurring Stripe subscription) or with your GameHostCloud account balance (30 days per payment). Balance is workspace-specific, so pick the workspace the payment should come from.
3. You can buy as many subscriptions as you need — each one can be named and managed separately in the studio ("Buy another").
4. Card subscriptions can be managed or cancelled any time from /livesub/studio → Subscription → Manage billing.

2. Configure the studio

Go to /livesub/studio:

You also choose the English variant (American by default, British or Automatic), which tunes recognition for US accents, AAVE and gamer slang. Fast, slurred speech where words run together (for example "moimitäkuuluu") is split and understood automatically.

• Control — start/stop capture, tick any number of connected microphones, optionally add system audio, set the stream delay, monitor status and latency. LiveSub captures audio only; video is never shared.
• External stream links (audio only) — add one or more links (VDO.Ninja, Twitch, YouTube, Kick, Jitsi, Meet, Whereby, Discord or any page with audio) with the + button and remove them with the trash icon. LiveSub forces every link to audio only, so no video is requested, shown or stored, and mixes that audio into the same subtitle pipeline as your microphones.
• Appearance — font, size, colors, background and line count with a live preview. Drag the caption box anywhere on the 1920x1080 preview to set its exact place on screen (arrow keys nudge it, Shift takes bigger steps, Reset position restores the default lower third).
• Languages — source language, target languages and the translation mode:
• *Selected languages only* (default): only speech in the languages you picked is subtitled, translated back and forth between them.
• *Any language → one language*: whatever is spoken is always translated into your first selected language.
• *Any language → two languages*: whatever is spoken is always translated into your first two selected languages.
• OBS — your personal overlay URL, recommended browser-source settings and the full step-by-step guide.
• Subscription — payment method, paid period, processing location and subscription picker. Card subscriptions also have Stripe billing controls.

3. Add the overlay to OBS

1. In OBS add Sources → Browser.
2. Paste the overlay URL from the OBS tab. It is always on the https://gamehostcloud.com domain and contains your private overlay token.
3. Set width 1920, height 1080, FPS 30, and Shutdown source when not visible = off.
4. Position the browser source over your scene (bottom third is recommended for movie-style subtitles).

3b. Capture audio reliably

OBS Browser Source is an embedded display surface and cannot reliably show microphone or desktop-sharing permission dialogs. Use the overlay URL for caption display only.

Language pair, appearance and stream delay come from your studio settings. A transparent OBS source while nobody is speaking is normal.

1. Add the overlay URL as a Browser source (1920x1080, 30 fps).
2. Open LiveSub Studio in Chrome, Edge or Safari, tick the microphones you want captioned (and enable Capture system audio for game sound or guests), then press Start subtitles.
3. Keep Shutdown source when not visible off so captions remain visible for the whole stream.

4. During the stream

• Keep LiveSub Studio open in a normal browser while streaming; it captures audio and sends captions to the OBS display URL.
• Voice activity detection only sends speech, so silence does not consume usage.
• Audio is sent in short (~600 ms) chunks: interim captions appear almost instantly and are replaced by the final, corrected text.
• If your broadcast uses a delay, set the same delay in the Control tab so captions land in sync with the picture.
• The overlay updates in real time through the realtime channel; no page refresh needed.
• Background music, singing and game sound effects are filtered out — only human speech is subtitled.

5. Learning memory (fully automatic)

LiveSub keeps a private, AI-only glossary per subscription so your channel's slang, nicknames, clan tags and game terms are always translated the same way.

• Terms the AI does not understand are never guessed. They are logged and researched in the background against open web sources (Wiktionary, Wikipedia and slang dictionaries), then verified and added to the glossary by the AI itself, so the next time they are correct — including inflected forms and whole expressions.
• The memory is managed entirely by the AI. There is no memory tab and no manual editing — nothing to maintain.
• The memory is never wiped automatically — accuracy only improves the longer you stream.

Troubleshooting

• No text in OBS: verify the overlay URL matches the one in the OBS tab and that LiveSub Studio is open with Start subtitles pressed.
• A login page in OBS: you copied a preview URL — always use the gamehostcloud.com overlay URL shown in the OBS tab.
• No microphone: allow microphone permission in the browser, press Refresh devices and re-tick the device in the Control tab.
• Captions arrive late or early: adjust the stream delay in the Control tab to match your encoder/platform delay.
• Wrong language: set the correct source language in the Languages tab; auto-detect can be inaccurate on short phrases.
• Subscription inactive: the payment has not gone through or the paid period has ended — renew it in the Subscription tab.