Viki no longer has its native Learn Mode dual subtitles. On desktop Chrome, current third-party extensions still advertise Viki dual-subtitle overlays; TV and mobile apps use Viki’s normal subtitle-language controls; and if two languages are already visible, Viki says the extra one may simply be burned into the video.
Two lines on Viki can come from three very different places: native, burned in, or overlaid.
Quick answer by device
| Where you watch | What works now |
|---|---|
| Desktop Chrome | Viki’s normal one-language subtitle selection plus optional third-party browser overlays that currently claim Viki dual subtitles; test compatibility locally. |
| Mobile app | Use Viki’s normal subtitle-language menu. Desktop Chrome extensions do not run inside the native app. |
| Smart TV / Roku / Fire TV / Apple TV / Android TV | Use Viki’s native subtitle controls for the app/device. Do not expect a desktop Chrome extension inside the TV app. |
| Any device showing two languages already | The second language may be hardsubs burned into the video rather than a selectable second Viki track. |
What happened to Viki Learn Mode?
If you found an old tutorial telling you to turn on Learn Mode, the instructions are stale. Viki officially removed Learn Mode from both its website and app on July 31, 2023.
A feature can be dead and still haunt Google results for years. The useful question in 2026 is not “Where is Learn Mode?” but “Where is my second line actually coming from?”
Are those really dual subtitles—or burned-in hardsubs?
Viki has a current Help Center article specifically for people who see two languages. Its explanation: the extra language in the background can be hardsubs supplied by the content provider—text permanently burned into the video itself.
Those hardsubs cannot be switched off inside Viki because they are part of the picture.
Second-line identity check: turn Viki subtitles Off
If one subtitle language remains visible after Viki’s selectable subtitles are off, that remaining text is likely burned into the video. You are not looking at a normal selectable dual-subtitle mode.
Both lines disappear when an extension is disabled
That points toward a third-party browser overlay owning at least one of the subtitle layers.
I see only one line in Viki’s subtitle menu
That matches Viki’s current normal behavior: choose one available subtitle language from the player or your saved subtitle preference.
What works for Viki dual subtitles on desktop browser?
Desktop Chrome is where current dual-subtitle workarounds are most realistic, because browser extensions can add a separate overlay on top of Viki’s player.
Two current Chrome Web Store listings explicitly claim Viki support:
| Browser extension | Current evidence | What it does not prove |
|---|---|---|
| Sabi | Version 1.6.100, updated August 5, 2026; publisher claims dual subtitles on Rakuten Viki. | That it will work on every Viki title, account, region, browser version, or future player build. |
| DownSub | Current listing publisher-claims two stacked subtitle languages on Viki among supported sites. | That your exact Viki session is runtime-compatible today. |
That distinction matters. “Listed for Viki” is evidence of the publisher’s current claim; it is not a permanent compatibility certificate from Viki.
Run a one-scene compatibility test
Do not spend an episode maintaining an extension. Use one short scene to decide whether the workaround deserves to stay enabled.
Desktop browser check
PASS FOR THIS SESSION
The overlay works on this title/browser session and survives a simple replay. Use it when it helps, but do not assume future Viki updates or other titles will behave identically.
FAIL
No useful second line, obvious drift, duplicated text, broken controls, or too much UI friction? Disable the extension and continue with Viki’s native subtitles. A five-minute failure is much cheaper than a forty-minute troubleshooting hobby.
What works on TV?
Viki currently supports a wide range of connected-TV platforms, including Android TV, Google TV, Apple TV, Fire TV, Roku, LG TV, and Samsung TV on supported versions. Those apps expose Viki’s own subtitle controls and available language selection.
What they do not inherit is a desktop Chrome extension. Your TV is not hiding an “Add to Chrome” button behind the remote batteries.
If you need two selectable subtitle languages for a focused study session, desktop browser is the practical place to test a third-party overlay. On TV, use Viki’s native subtitle language and readability controls where available.
What works on mobile?
On iOS and Android Viki apps, the player lets you choose one available subtitle language. Viki also supports mobile web, but that remains separate from a desktop Chrome-extension workflow.
If dual subtitles are essential for one difficult scene, the cleanest option may be to do that scene on desktop and return to mobile for normal viewing rather than forcing a desktop-extension workflow into the wrong device class.
Use two lines as temporary support, not wallpaper
If you do get a working browser overlay, give the second language a job. Use it when meaning genuinely breaks, then remove it on replay.
- Watch 20–40 seconds with the target-language subtitle as your main line.
- Use the support-language line only where the sentence meaning collapses.
- Replay the same segment with the support line hidden.
- Say aloud what the line meant or repeat one useful phrase.
For the broader method, see media-based language learning.
If you want to explore a separate language-learning layer for supported video pages, you can open FunFluen. Platform support varies, and this does not create Viki dual subtitles or guarantee Viki compatibility.
Native, burned in, or overlaid?
That is the question to remember. Viki’s old Learn Mode is gone. A second visible language may be unremovable hardsubs. A selectable second line today is most realistically a desktop-browser overlay from a third party—and should be tested on your exact session before you build a study habit around it.