Subtitles on YouTube and Crunchyroll

YouTube

On a video, the buttons in the top-right corner of the player turn Lingaku subtitles on, open the subtitle list, and read the text in the video. The extension remembers your choice for each channel.

The subtitles come from YouTube, in the language spoken in the video when it is one you are learning. A video with no subtitles in your languages is not read.

In the subtitle list every word can be clicked, and each line has a button to play from it. When the video ends, Mark as watched records it the way Mark as read records a page.

Crunchyroll

On Crunchyroll you add the subtitle files yourself: open the subtitle list on an episode and click Choose subtitles. Files for a whole season (.srt, .vtt, .ass, or a .zip of them) can be added at once, and they are matched to their episodes by their names. The files are kept in this browser, not in your account. Use only subtitle files you have the right to use.

When the subtitles are early or late, shift them with the timing buttons under the list. The shift is remembered for the season.

Selecting words with the keyboard

Press ↓ during a video to select the word being spoken. Move with ← and →, open the word with Enter, and go back to the video with Esc. Past the first or last word, ← and → show the previous or next line in its place without moving the video, and the line being played comes back when you stop selecting. Shift+↑ and Shift+↓ jump to the previous or next line and move the video there.

In the popup, ← and → move to a level and Enter sets it. The keys for scrolling and switching tabs are in the popup’s shortcut list.