Game voice lines vs. on-screen text: what live translation can and cannot do

Two different problems: sound and pixels

A game communicates through two channels. Voice lines are audio: cutscene dialogue, NPC comments, radio chatter, boss taunts and your teammates in voice chat. On-screen text is image data: menus, item descriptions, quest logs, unvoiced dialogue boxes, signs and tutorials.

A live voice translator listens to sound, recognizes the speech and translates it. It never looks at the picture. Text-reading tools do the opposite: they capture the screen and try to recognize characters, but they can't hear anything. No single approach covers both, so it helps to know which channel carries the information you need.

What live audio translation handles well

• Fully voiced cutscenes and story scenes - often the part of a game where you need context most.
• Ambient and combat dialogue that has no subtitles at all, such as NPC remarks or enemy callouts.
• Voice chat and multiplayer with players who speak another language.
• Streams, trailers and developer videos that are only available in the original language.

Limits to expect: loud music or effects over speech, several characters talking at once, heavy slang, invented fantasy terms and character names can all reduce accuracy. Translations are AI-generated and may contain mistakes, so treat them as a strong hint rather than an official localization.

What it cannot do

• Translate menus, skill trees, inventory and settings.
• Read unvoiced dialogue boxes, which are common in RPGs and visual novels where only key scenes are voiced.
• Read signs, notes, letters and puzzle clues shown as images.
• Translate foreign subtitles that appear without matching speech.

Many Japanese games mix both: a voiced opening scene, then long stretches of text-only conversation. Expect live audio translation to help in some parts of such a game and stay silent in others.

Options for on-screen text

• Check the game's language settings first. Some titles include an English text option, sometimes only in certain store regions or after an update.
• Community translations. Fan patches exist for some games. They can be excellent, but check that they come from a trusted source and are allowed by the game's terms.
• Screen text recognition (OCR) tools. They capture part of the screen and translate the text. Pros: they work on menus and dialogue boxes. Cons: stylized fonts, vertical text, small UI and moving backgrounds cause errors, and you often have to trigger a capture manually.
• Phone camera translation. Clumsy for constant use, but handy for a single menu or sign.
• Wikis and guides. For menus and items that don't change, a translated reference is often faster than any tool.

How Trannel covers the voice side

Trannel is a Windows 10/11 app that translates whatever your PC plays into live subtitles in an overlay that stays on top of the game. You can move it freely and adjust the font. F8 shows the overlay and F9 makes it click-through, so it doesn't block your mouse.

• It can listen to only the game instead of all sound, so music players or Discord don't mix into the subtitles.
• Speech recognition and translation work in 20 languages, including Japanese, Chinese, Korean and English, with automatic language detection.
• Everything runs offline on your PC; no audio or text is uploaded. It goes online only for the license check, updates and the first model download.
• It runs without a graphics card; an NVIDIA or AMD GPU makes it faster and allows the larger model. Choose Fast, Balanced or Best quality.
• For talking back, the Voice feature (beta) speaks your translated microphone into a virtual microphone for Discord and game voice chats where you can choose the mic.

Be clear about the limit: Trannel translates only what is spoken. Text that only appears on screen is not read, so pair it with one of the text options above for menus and unvoiced dialogue. You can try it free for 30 minutes every week with all features and no account.

Tips for a setup that covers both

1. Raise the in-game voice volume and lower music and effects to improve recognition.
2. Set Trannel to listen to the game app only, and keep voice chat separate if you don't need it translated.
3. Place the overlay away from the game's own text box and HUD, then press F9 to make it click-through.
4. Use a text tool or wiki for menus, and live audio translation for scenes and chat.
5. If the game offers original audio with a translated text option, you may not need any tool for text at all.

Note on “Voice for Discord”: this feature is in beta. It may contain errors and its scope and behaviour may differ from a later version. It is only included in the version from trannelapp.com. Please test it with the free 30 minutes per week before you buy. Your statutory rights remain unaffected.

→ Game translator

Frequently asked questions

Can Trannel translate the text boxes in a visual novel?

Only if the lines are voiced. Trannel translates spoken audio; text that only appears on screen is not read. For unvoiced text you need a screen text recognition tool, a community translation or a guide.

The game has Japanese voices and Japanese subtitles. What does Trannel translate?

It translates the spoken Japanese. The on-screen subtitles are not read, but when they match the voice line you still get the meaning through the translated audio.

Does live game translation need an internet connection?

With Trannel, recognition and translation run offline on your PC. It only connects for the license check, updates and the first model download, and no audio or text is uploaded.