YouTubeScraper/YouTube.API/Models/VideoPlayback.cs

using System;
using System.Collections.Generic;

namespace YouTube.Models
{
    public class VideoPlayback
    {
        public string Id { get; set; }
        public PlaybackUrlsData PlaybackUrls { get; set; } = new PlaybackUrlsData();
        public IReadOnlyList<ClosedCaptionInfo> ClosedCaptions { get; set; }

        public class PlaybackUrlsData
        {
            public IReadOnlyList<VideoPlaybackUrl> Video { get; set; }
            public IReadOnlyList<AudioPlaybackUrl> Audio { get; set; }
            public string LiveStreamUrl { get; set; }
            public DateTime ValidUntil { get; set; }
        }
    }
}