How can I segment large audio files for OpenAI Speech-To-Text in Node.js?

Below is one approach you can take using NodeJS: leverage ffmpeg with a Node wrapper such as fluent-ffmpeg. This lets you split audio files into smaller segments programmatically.

Steps:

1. Install ffmpeg:
   Ensure you have ffmpeg installed on your system. You can download it from ffmpeg.org.

2. Install fluent-ffmpeg:
   In your Node project directory, run:

   BASHCopied
   npm install fluent-ffmpeg

3. Code to split audio:
   Here’s an example that extracts the first 10 minutes of an audio file (adjust the duration as needed):

   JSCopied
   const ffmpeg = require('fluent-ffmpeg');
   
   const inputFile = 'good_morning.mp3';
   const outputFile = 'good_morning_10.mp3';
   
   // Duration in seconds (10 minutes)
   const segmentDuration = 10 * 60;
   
   ffmpeg(inputFile)
     // Extract a segment starting at time 0 with the specified duration
     .setStartTime(0)
     .setDuration(segmentDuration)
     .output(outputFile)
     .on('end', () => {
       console.log('Audio segment successfully created.');
     })
     .on('error', (err) => {
       console.error('Error processing audio:', err);
     })
     .run();

This script uses ffmpeg via fluent-ffmpeg to split the audio file, similar to the Python example from OpenAI's documentation. You can adjust the segment duration or create multiple chunks if needed.

Using ffmpeg in your NodeJS projects is a common approach to audio processing, and it should fit seamlessly into your overall OpenAI integration.