Videos from URL are videos where you can watch directly in browser or download, for example:
{
"in": 0,
"out": 149,
"duration": 149,
"source": "https://example.org/big_buck_bunny.webm"
}This should work in general, because most time it have a duration information and it is faster playable then a real live stream source. Avoid seeking because it can take to much time.
Live streams as input in playlist, like rtmp is not supported.
Be careful with it, better test it multiple times!