[API] Return non-relative paths for HLS streams

[Cynosphere]

Describe the feature

HLS streams currently return relative paths, which not all players (and sadly ffmpeg) handle this well

Why would this be useful to add?

ffmpeg does not properly understand relative paths from HLS streams

Concept(s)

No response

Additional context

I am in a context (Discord bot) where the library I'm using for streaming audio (Dysnomia, maintained fork of Eris) relies heavily on ffmpeg. I cannot use normal audio stream URLs because of their short expiry time, which cannot be worked around (thanks Google!). I've dealt with this issue for years and the only solution was to use InnerTube (youtubei.js) but I want to move away from using YouTube's API directly.

I would've tried to report this to ffmpeg, but that's a headache in it of itself that I do not want to deal with to most likely be told "this is a duplicate".

Acknowledgements

• [X] I have searched the existing issues and this is NOT a duplicate or related to another open issue.
• [X] I have written a short but informative title.
• [X] I filled out all of the requested information in this form.

[FireMasterK]

Hi, I'm unable to reproduce this with the following command:

ffmpeg -i $(curl -s "https://pipedapi.kavin.rocks/streams/jNQXAC9IVRw" | jq -r .hls) -c copy test.mkv