https://github.com/oreparaz/rshift
Those living in California know that listening to the BBC Radio 4 live stream isn't the same thing --- when you're waking up, people in London are already eating supper. Fine disc jockeys won't play same music at 8am or 8pm; time zones messes this up.
This simple project allows you to listen to internet radio streams (HLS) with a configurable time delay. You end up listening to your favorite show at the proper (local) time: you listen at 8pm California time what was broadcasted at 8pm in London.
It works by serving a time shifted M3U file and caching the fragmented stream. Time shifting into the future isn't supported yet, unfortunately.
You need a server 24/7 to run this. You don't need a very powerful machine. A home server with a large disk will work, or any small cloud VM instance will work fine too.
Example usage:
curl -LO https://github.com/oreparaz/rshift/releases/latest/download/rshift
./rshift -download-m3u8-url https://radio/playlist.m3u8 -output-path=/path/to
Then you can visit http://host:8080/timeshift/1234.m3u8 if you want to listen to the stream with a time delay of 1234 seconds. (You'll probably need NAT to access from clients outside of your LAN).
Will this eventually eat all my disk space?
rshift keeps only 5 days of stream data and deletes any files older than that. So no, it won't end up filling all your disk.
Which client should I use? Works great with Safari on iOS/MacOS. On iOS the stream plays even when Safari is minimized or the screen is locked.
Which cloud provider should I use? If you don't want to keep your own server at home, I found Google Compute Platform is a cool environment to run rshift. You can run this on a micro instance that qualifies for the free forever tier. You pay for egress traffic (ingress is for free), so you just pay for what you listen.
No authentication?
You can set the following environment variables to turn basic HTTP auth on:
RSHIFT_USERNAME=foo RSHIFT_PASSWORD=bar ./rshift ...
This is "code complete" for my (very) specific use case.
rshift has been running solidly for more than one year.
Feature-wise it's pretty barebones.
There is a tons of items in the TODO if you want to tackle on those.