Merge Subtitles

.srt + .srt Client-side

The Problem

There are several situations where you need to combine two subtitle files into one:

Dual-language subtitles — you want both the original language and a translation visible simultaneously, but they exist as two separate files.
Multi-part content — a movie split into two parts with separate subtitle files, but you have a single combined video.
Two speakers or audio channels — an interview with two speakers transcribed in separate files that need to be merged into one chronological SRT.

How to Use It

Step 1 — Upload two files

Two upload zones appear side by side. Drop your File 1 (Primary) on the left and File 2 (Secondary) on the right.

Step 2 — Choose a merge mode

Mode 1: Interleave by timestamp

All cues from both files are sorted together by start time into a single chronological sequence. Use this for combining two speakers or two audio channels into one file.

1
00:00:02,100 --> 00:00:04,300
[File 1] Hello, welcome to the show.

2
00:00:04,800 --> 00:00:06,200
[File 2] Thank you for having me.

Mode 2: Stack text (dual subtitles)

For cues that overlap in time, both texts are shown in the same block — File 1 on top, File 2 below. Perfect for dual-language display: original language above, translation below.

1
00:00:02,000 --> 00:00:04,500
Vous êtes très courageux.
You are very brave.

Mode 3: Append sequentially

All cues from File 1 appear first, followed by all cues from File 2, with indices renumbered. Use this for combining subtitles for two separate parts of a video (e.g. a two-part film).

Step 3 — Download

Click Merge Subtitles, then Download Merged SRT.

Tips

Stack mode works best when both files have nearly identical timings — e.g. both generated from the same source but in different languages. Large timing differences mean cues may not pair correctly.
Before merging, clean each file with the SRT Cleaner to remove SDH cues and watermarks from both.
For dual-language files, try coloring each file a different color (white + yellow) before merging for instant visual separation.