When i said manually, I'm referring to a function to input URLs and have it played with SVP. Otherwise, SVPTube automatically plays any video from links you copy to your clipboard (and sometimes you don't want the video to be played eg: copying the link to send a friend)
Currently, apart from Autoplay from SVPTube, there is no other way to play videos. In order to play a video, you would have to turn on Autoplay first, then copy the link. If you already have the link copied to your clipboard, you would have to copy something else to overwrite it, then copy the link again. It seems really awkward that we have a great application for playing videos with your browser but still lack a function to input links manually.