How to upload a youtube video via REST api from url?

I am trying to upload a video to youtube via data api, but cannot figure out where to put the url where the file is located?

Is there any possibility without a library just via https request?

I can find this in the docs:

{"snippet": {"title": "Summer vacation in California","description": "Had fun surfing in Santa Cruz","tags": ["surfing", "Santa Cruz"],"categoryId": "22"  },

but no file or path url here. It says:

Call the script

The list below defines the script's command-line arguments:

file: This argument identifies the location of the video file that you are uploading.

Example: --file="/home/path/to/file.mov"

But I would like to implement it as mentioned without libraries.

I was also able to figure out the following mentioned in the docs:

This method supports media upload. Uploaded files must conform to these constraints:

Maximum file size: 256GBAccepted Media MIME types: video/*, application/octet-stream

Maybe someone has an example request how to do it, like this example to upload a FACEBOOK video:

POST https://graph.facebook.com/v15.0/[page-id]/videos

with the following parameters:

file_url = XY,description = XZ,access_token = EA

Maybe there is an easy solution like this example for youtube as well.

Thanks!

Reading the official docs.