I didn't actually start making the video until Monday 25th, and I had to go camping from Wednesday to Friday, so I only had parts of four days to complete the project for April Fools. Mostly evenings, as I was also working on my next Instructable
on the weekend.
Starting with a quick search for source videos, I used DownloadHelper for Firefox
to get the videos from YouTube, then converted the .flv files to .mpeg format with FLV Converter
so that I could import them into my video editor.
I won't go into detail on the editing, since video software varies greatly; and if you make your own disguised Rickroll you will most likely use a different video to hide it in. I'll gladly attempt to answer any questions you may have via the comments.
The lower picture above shows my workspace with the timeline of the completed video. I have a second screen which I usually put the Video Preview window onto when I'm editing. If you look at the picture while listening to the video multiple times, it will help you to understand how I created it.
I made an initial render on Wendesday morning and watched it on my phone [mostly
with headphones] multiple times during the camping trip, and kept notes of any new ideas I had.
On Saturday, after some tweaking of transitions and adding more sound clips to the Voice track, I made the credits. I added varying levels of transparency to the white text elements - full for Headers, less for Single Items and minimal for Dual Items and the black background; this allows the rainbow image to show through from underneath.
I made a last minute decision on Sunday just before my final render; adding some Nyan Cat into the mix to mess with people's heads some more, plus it <censored> a few parts that my mother might not approve of if she ever watches the video :)