How to transcode an HLS stream using Node?

Question

fmpeg

Hello, I would like to drive IPTV using DLNA to local TVs.
I use the edemTV service, unfortunately they provide a stream in HLS, my TV does not support HLS. I would like to receive standard mp4 stream (as an example).
What did I come up with?
on a node, use the API when accessing a URL, for example,
http://localhost:1337/index.m3u8
get a response from a file that Node.js generates using ffmpeg.
Actually questions
1) Is it done in general or is it a bicycle made of bicycles?
2) How to use ffmpeg in Node.js
3) Can all this be transferred to a router with ddwrt firmware?