srtedit

A command-line tool for quickly editing subtitle (.srt) files.

Installation

pip install srtedit

Basic Usage

Offset subtitles in milliseconds

srtedit subtitles.srt --offset 1000

Will add exactly 1 second to all subtitle elements. Conversely:

srtedit subtitles.srt --offset -1000

Will subtract 1 second from all subtitle elements.

The modified subtitles will be printed to stdout. Use -o to specify an output file:

srtedit subtitles.srt --offset 500 -o new.srt

Selecting

The -s/--select option allows you to select a single or range of subtitle elements to modify. This can work alongside other options such as --remove, --edit, and --offset.

On its own, it can be used to select a portion of the subtitles:

srtedit subtitles.srt -s 1:10   # Grab the first 10 elements 

Single element:

srtedit subtitles.srt -s 4  # Grab the 4th element

Remove subtitle element

Use the -r/--remove option to remove a selected element.

srtedit subtitles.srt -s 1 --remove

Edit subtitle element

srtedit subtitles.srt -s 1 --edit "New text"

Count number of elements

srtedit subtitles.srt --count

Multiple options

You can use multiple options together like this:

srtedit subtitles.srt -s 1 --edit "New text" --offset 1000 --view -o modified.srt

Will set the text of the first element to "New text" then add 1 second to the start and end times and then display the new values to the terminal and then finally write it to modified.srt