A set of 15 animated speech bubbles, each separate clip contains an alpha channel. Clips are all 2000×2000 pixels Apple PNG.
Each clip is 4 seconds long including the bubble animating in and out. These are motion graphics footage elements, not editable After Effects files.
The music used in the preview video can be purchased here :http://audiojungle.net/item/bright-and-early/3894935?WT.ac=search_thumb&WT.seg_1=search_thumb&WT.z_author=GroovingGecko
After Effects Tip – Apply a Fill or Ramp effect to quickly change the color of your speech bubble
Make sure you check the documentation of the program you are using on how to implement files with embedded alpha channels.