nova-live/projects/live-app/src/pipes/secondsToTime.ts

// seconds-to-time.pipe.ts
import { Pipe, PipeTransform } from '@angular/core';

@Pipe({
  name: 'secondsToTime'
})
export class SecondsToTimePipe implements PipeTransform {

  transform(seconds: number): string {
    const hours = Math.floor(seconds / 3600);
    seconds %= 3600;
    const minutes = Math.floor(seconds / 60);
    seconds %= 60;

    return `${this.pad(hours)}:${this.pad(minutes)}:${this.pad(seconds)}`;
  }

  private pad(value: number): string {
    return value < 10 ? `0${value}` : `${value}`;
  }
}