Have you ever spent hours sweating over every last detail of a screencast video, only to discover that when it plays on YouTube, it appears with ugly black bars on either side of the video? Annoying!
Well, this is easy to fix, but it requires some knowledge about the aspect ratio of your video and how it relates to the player on YouTube. If you want more information about screen resolution and aspect ratios, I wrote a rather popular post on this very topic awhile back.
For information specific to making your videos fit well on YouTube, take a look at this 4 minute video with information and instructions on how to size, crop and scale your ScreenFlow video so that when you upload it to YouTube, it will fill the screen perfectly – no ugly black bars.