For anyone else here that makes webms, especially the anon that's been doing some of the fancams from that youtube account recently:
I don't know what you guys use to make them but if you were using webm for retards like me there's a newer version of it now that supports dynamic cropping (so the cropped window moves with the girl you're making a webm of) which would be especially useful for the fancams since that guy doesn't hold the camera steady.
And they added some other cool features like merging clips too.
https://argorar.github.io/WebMConverter/ 