File Download on NodeJS with use opensubtitles API

Question

I'm a new NodeJS and JS user. For my Web API project, I'm utilising NodeJS. My project, which makes use of the opensubtitles API. The Opensubtitles API returns a URL for a.*gz file. I'd like to save this URL's file to a local folder. I tried a couple other approaches. I was not, however, successful. I saved the file locally, however some of the language characters were corrupted.

Sample file Url:

https://dl.opensubtitles.org/en/download/src-api/vrf-19ed0c61/filead/1954767944.gz

If I download it with a web browser, the characters are coming out properly.

My sample code:

const out = fs.createWriteStream('out.srt'); 
request(subtitle.getSubDownloadLink()).pipe(zlib.createGunzip()).pipe(out);

Answer 1

The problem is the charset output (default utf8)

So you need to convert the strreamed file from iso-8859-5 (charset of the file in gz) to utf8.

This works:

const fs = require('fs')
const request = require('request')
const zlib = require('zlib')
const iconv = require('iconv-lite');

var converterStream = iconv.decodeStream('iso-8859-5');

const out = fs.createWriteStream('out.srt');
request(`https://dl.opensubtitles.org/en/download/src-api/vrf-19ed0c61/filead/1954767944.gz`)
  .pipe(zlib.createGunzip())
  .pipe(converterStream)
  .pipe(out);