Merge Subtitles
Combine two subtitle files into one: two languages on screen at once, or two parts joined end to end.
File A· Top line
File B· Bottom line
How to merge
Match lines
Layout
Dual-language subtitles
Each line of file B goes under the line of file A it overlaps most in time. A line that matches nothing is kept as its own line, so no text is lost.
Join two parts
File B's lines go after file A: its times count from the end of file A, or shift them by an exact amount, or keep them as they are.
Keep editing
Open the result in the editor to fix lines and timing. Already editing a file? Use File → Add subtitle.
Subtitle EditorFrequently Asked Questions (FAQ)
Choose your main subtitle as file A and the second language as file B, keep Bilingual selected and download. Each line of file B goes under the line of file A it overlaps in time.
Lines up to the allowed gap apart (0.5 seconds by default) are still paired. If the timings are completely different but both files have the same number of lines, choose By line order.
The result is a normal subtitle file with two lines per cue, so VLC, YouTube and other players that read SRT or VTT show both languages. Choose One line to keep each cue on a single line.
Choose CD1 as file A and CD2 as file B, then pick Append. File B's times count from the end of file A; if part two starts later in the video, choose Shift by and enter its exact start time.
No. The files are read and merged in your browser and never leave your device.