VLC for iPhone and iPad
The VLC app for iOS is nothing new to most of you. The reason I wanted to link to it is that I discovered a feature that has made it a home-screen worthy app for me. It has variable speed playback! This feature is similar to a 2x playback in a podcast app.
Why would you want to speed up playback in a video? Let's say that you have watching WWDC videos, and you want to speed through it. VLC is the perfect app to do that. You can set up your default playback speed in the app settings.
Download it for free on The App Store.