For the record, I'm very new, I have no background in this and as green as the flash I'm about to describe. I recorded a video, uploaded it to video pad and edited it. My editing was simple, I trimmed some frames off the beginning and end then added a fade in image of my business card at the end. Everything looked and worked great, that is until I uploaded it to YouTube and Facebook The video started as I expected but was followed by a green screen flash and resumed perfectly.
I edited it out on both YouTube and Facebook but have no idea why the flash didn't show in Videopad.