Youtube VideoPreview with correct video duration formatting

VideoPreview.js

/*...*/
import {getVideoDurationString} from '../../services/date/date-format';

export class VideoPreview extends React.Component {
  render() {
    /* ... */
    const duration = video.contentDetails ? video.contentDetails.duration : null;
    const videoDuration = getVideoDurationString(duration);
    const viewAndTimeString = VideoPreview.getFormattedViewAndTime(video);
    const horizontal = this.props.horizontal ? 'horizontal' : null;
    return (
      {/*...*/}
        <div className='time-label'>
          <span>{videoDuration}</span>
        </div>
      {/*... */}    
    );
  }
}