Google has updated the YouTube Capture app for iOS to support video editing features that will strongly benefit video editors and vloggers. Now you can record videos using the tap and hold gesture that was popularized by Vine. There is also an option to press the record button for longer videos.
The finished clips bounced into a bubble in the corner to display the duration of your combined videos. Tapping on the bubble shows an editing mode where you can rearrange your videos.
You can import new clips stored from your Camera Roll by tapping on the plus symbol. You can trim the video by dragging the sliders on either side of the screen.