-<div myInfiniteScroller [autoInit]="true" (nearOfBottom)="onNearOfBottom()" class="videos">
- <div class="video" *ngFor="let video of videos; let i = index">
+<div myInfiniteScroller [autoInit]="true" (nearOfBottom)="onNearOfBottom()" [dataObservable]="onDataSubject.asObservable()" class="videos">
+ <div class="video" *ngFor="let video of videos; let i = index; trackBy: videoById">
+