My man, there are many tools that you can download to capture imbedded videos on porn websites which you have described.

I personally use Mozilla Firefox and they have a utility called download helper which is excellent and easy to use.

All you have to do is start playing the video, go to download helper tool, and you'll see the link to the file and then you download the file to your computer. I use it a lot for sites like [edited] and I download the .FLV files and play them on my computer.

I also recently had a membership to [edited] and all of her videos are embedded and you can't download anything because there are no links. If you get download helper, you can download all of the video on the site.

I hope this helps.