LottieSamplePage.xaml

<?xml version="1.0" encoding="utf-8"?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms" 
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" 
             xmlns:local="clr-namespace:LottieSample" 
             x:Class="LottieSample.LottieSamplePage"
             xmlns:forms="clr-namespace:Lottie.Forms;assembly=Lottie.Forms">
    <ContentPage.Content>
         <StackLayout VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand">
              <forms:AnimationView 
                x:Name="AnimationView" 
                Animation="video_cam.json" 
                AutoPlay="True" Loop="true"
                VerticalOptions="FillAndExpand"
                HorizontalOptions="FillAndExpand" />
      </StackLayout>
    </ContentPage.Content>
</ContentPage>