> For the complete documentation index, see [llms.txt](https://manual.trancy.org/en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://manual.trancy.org/en/get-started/use-extension/bilingual-subtitles/theater-mode.md). # Theater mode

Trancy Theater Mode

Theater Mode is Trancy's distraction-free viewing layout for online video. It dims everything around the player so you can focus on the picture and the bilingual subtitles, and it works on supported video platforms. See all supported platforms on the [Bilingual subtitles page](/en/get-started/use-extension/bilingual-subtitles.md). While you watch, you can look up words, see grammar analysis, loop a line, and adjust the playback speed without leaving the video. ### How to turn on Theater Mode 1. Open a video on a supported site, such as YouTube or Netflix, and make sure Trancy bilingual subtitles are turned on. 2. Hover over the video to show the Trancy subtitle toolbar. 3. Click the Theater Mode icon in the toolbar to switch into the distraction-free layout. 4. To leave Theater Mode, click the icon again or press Esc. * Bilingual subtitles — read the original and translated subtitles together, line by line. * Word highlighting — saved and unfamiliar words are highlighted in the subtitles so they are easy to spot. * NLP word segmentation — NLP groups broken caption fragments into full sentences for more accurate translation and easier reading. * AI word lookup and grammar analysis — click a word for an OpenAI-powered definition, or analyze a full sentence to understand its structure. * Loop playback — repeat the current subtitle line as many times as you need to catch every word (shortcut: R). * Speed control — slow a video down or speed it up to match your listening level (shortcuts: S and D). ### Frequently asked questions **Which sites support Theater Mode?** Theater Mode works on Trancy's supported platforms (see the full list on the [Bilingual subtitles page](/en/get-started/use-extension/bilingual-subtitles.md)). Availability can change as platforms update, so check the live extension if a site is missing. **What is the difference between Theater Mode and Read Mode?** Theater Mode keeps the video large and centered for focused watching, while Read Mode shrinks the video to one side and shows the subtitles as scrollable text so you can read along. **Do I need a Premium plan to use Theater Mode?** Theater Mode itself is part of Trancy's bilingual subtitle viewing. Some tools you can open inside it, such as AI word lookup and grammar analysis, are Premium features per Trancy's pricing comparison; if the in-product experience differs, the in-product behavior is authoritative. Looking for the text-focused alternative? See [Read mode](/en/get-started/use-extension/bilingual-subtitles/read-mode.md), or go back to the [Bilingual subtitles ](/en/get-started/use-extension/bilingual-subtitles.md)overview. *Last updated: June 5, 2026* --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://manual.trancy.org/en/get-started/use-extension/bilingual-subtitles/theater-mode.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.