def fetch_video_info(video_url):
    # Function to fetch video information from YouTube API
    pass

def slice_video(video_path, start_time, end_time, quality='1080p', fps=60):
    # Function to slice the video based on user-defined time intervals
    pass

def download_video(video_url, start_time, end_time, quality='1080p', fps=60):
    # Function to download the video in the selected quality and frame rate
    pass