Merge two subtitle files into dual subtitles
Put two languages on screen at once. Choose the subtitle file in the language you are learning and one in your own language, and get a single SRT with both.
Language you are learning
Its timing is used for the merged file.
Your language
Shown as the second line.
- Nothing is uploaded
- No sign-up
- Free
How to use it
Choose the subtitle file in the language you are learning. Its timing is used for the merged file.
Choose the file in your own language. Lines that overlap in time are paired automatically.
Pick how the second language looks (italic or coloured, above or below), then download the merged SRT.
Good to know
- Files from different releases can be a few seconds apart. Use the time offset to line them up before downloading.
- Lines that only exist in the second file are kept on their own, so nothing goes missing.
- VLC, MPC-HC, Plex, Kodi and most TVs show italic and coloured SRT text.
What the merged file looks like
Each subtitle keeps the timing of the file in the language you are learning. The line in your own language is added underneath, in the colour you picked.
12 00:01:04,120 --> 00:01:06,480 ¿Dónde estabas anoche? <font color="#ffd60a">Where were you last night?</font> 13 00:01:06,900 --> 00:01:08,300 En casa, te lo juro. <font color="#ffd60a">At home, I swear.</font>
Watching with both lines teaches more than either alone: you hear the original, read it, and check the meaning in one glance without pausing.
Questions
Which video players show dual subtitles from one SRT?
Any player that reads SRT: VLC, MPV, MPC-HC, Plex, Kodi, Infuse, most smart TVs. Colour needs a player that supports font tags; VLC, MPC-HC and Kodi do.
The two files do not line up. What can I do?
Set the time offset for the second file until the preview pairs the right lines, then download. If the drift grows over the film, fix the frame rate first with the subtitle sync tool.
Can I get dual subtitles on Netflix without files?
Yes. The Fluent by Accident extension shows two subtitle lines on Netflix, YouTube, Prime Video, Disney+ and HBO Max, and lets you click any word to translate and save it.
Is my file uploaded anywhere?
No. The file is read by your browser on your own device and never sent to a server. Once the page has loaded it even works offline.