I am trying to pull a video from any website. Then cut some things out. Then be able to put it back into websites like ST. So far I have downloaded it using Jdownloader and cut things out using OpenShot. Now if I actually figure out how to use Openshot, will I still be able to put it online since I had to reformat it out of flash and into another format. Is there a more streamlined way of doing this? I am doing this right?

I'm looking to do this with free programs and am using Ubuntu mostly but can go back to WIndows if need be.

I am also wondering what kind of tags I can use like how [youtube] works for st. what kind of language is that?