https://greasyfork.org/en/scripts/595501-xtractor
You can install it using a userscript browser extension such as violent monkey.
video link fixed in 1.1 just need to click update on greasy fork
I didn't make images embed automatically because it's not always wanted (size or image is unrelated). Also people tend to to rehost images which is a good idea for resilience considering nitter is under direct attack atm.