Merge SRT Files

How to merge two SRT files into one

Joining subtitles by hand is trickier than it looks. Pasting one file after another is not enough: the sequence numbers restart at 1 and, more importantly, the second file's timings start over from zero — so half the subtitles would appear at the very beginning of the video. This tool handles both.

Add the files, put them in the order they should play, and download a single track. Everything is processed in your browser: the files are never uploaded.

What happens to the timings

Cues are chained in list order. From the second file onwards every timecode is shifted past the end of the previous one, with a one-second gap between parts so the last cue of one part does not land on the first cue of the next. Numbering is rebuilt from start to finish, so the result is a valid, continuous SubRip file.

That chaining assumes the parts play back to back, which is the case when you split a long video into pieces. If your files are parallel tracks — two languages of the same video, say — merging is not what you want: load each one separately in the player.

When you need it

The usual cases are a long video subtitled in parts, a recording that was cut into several files, a course split into lessons that ships as one piece, or a conference transcribed block by block by several people. In all of them the work is already done and only the single file is missing.

If the merged track runs early or late against the video, fix it with the subtitle time shift tool, which moves every timecode at once. And to confirm the final file has no overlapping cues or invalid times, run it through the SRT validator.