When you preview your mashed video, only the snippets for the current year are selected by default.
To watch all of the snippets in a project:
iOS app
tap on the Play button at the bottom center of the project screen,
tap on "Choose Dates",
select "Customize",
tap on "Select (All)",
tap on "Add to Mash".
Android app
tap on the big "Mash" button at the center of your project's screen,
tap on "Choose Dates",
select "All".
