Using AWS Polly requires SSML files for a better optimised text to speech experience with the ability to add pauses in speech and time speech output properly.

npm install srttossml

yarn add srttossml

This library receives srt file input and converts to AWS Polly compatible ssml :

import srttossml from "srttosmsl"

// takes in two parameters
srttossml(srtInputPath, ssmlOutputPath)

// srtInputPath is the file path to the srt file with the contents
// ssmlOutputPath is the file path where generated ssml file will be stored on disc