fix: some links are embedded as videos but they are webpages or images

[plebeius-eth]

same as plebbit/seedit#385

[plebeius-eth]

e9280ac

[estebanabaroa]

doing new URL() isn't free, it wastes ms, which makes the feed lag when you scroll, you shouldnt do it over and over. you should do it the minimum amount of times per post possible, ideally only once

in this function you're doing it twice for no reason

[plebeius-eth]

fixed 0841405