youtube itag

youtube_itag.cs

// code from https://tyrrrz.me/Blog/Reverse-engineering-YouTube
private static readonly Dictionary<int, ItagDescriptor> ItagMap = new Dictionary<int, ItagDescriptor>
{
    // Muxed
    {5, new ItagDescriptor(Container.Flv, AudioEncoding.Mp3, VideoEncoding.H263, VideoQuality.Low144)},
    {6, new ItagDescriptor(Container.Flv, AudioEncoding.Mp3, VideoEncoding.H263, VideoQuality.Low240)},
    {13, new ItagDescriptor(Container.Tgpp, AudioEncoding.Aac, VideoEncoding.Mp4V, VideoQuality.Low144)},
    {17, new ItagDescriptor(Container.Tgpp, AudioEncoding.Aac, VideoEncoding.Mp4V, VideoQuality.Low144)},
    {18, new ItagDescriptor(Container.Mp4, AudioEncoding.Aac, VideoEncoding.H264, VideoQuality.Medium360)},
    {22, new ItagDescriptor(Container.Mp4, AudioEncoding.Aac, VideoEncoding.H264, VideoQuality.High720)},
    {34, new ItagDescriptor(Container.Flv, AudioEncoding.Aac, VideoEncoding.H264, VideoQuality.Medium360)},
    {35, new ItagDescriptor(Container.Flv, AudioEncoding.Aac, VideoEncoding.H264, VideoQuality.Medium480)},
    {36, new ItagDescriptor(Container.Tgpp, AudioEncoding.Aac, VideoEncoding.Mp4V, VideoQuality.Low240)},
    {37, new ItagDescriptor(Container.Mp4, AudioEncoding.Aac, VideoEncoding.H264, VideoQuality.High1080)},
    {38, new ItagDescriptor(Container.Mp4, AudioEncoding.Aac, VideoEncoding.H264, VideoQuality.High3072)},
    {43, new ItagDescriptor(Container.WebM, AudioEncoding.Vorbis, VideoEncoding.Vp8, VideoQuality.Medium360)},
    {44, new ItagDescriptor(Container.WebM, AudioEncoding.Vorbis, VideoEncoding.Vp8, VideoQuality.Medium480)},
    {45, new ItagDescriptor(Container.WebM, AudioEncoding.Vorbis, VideoEncoding.Vp8, VideoQuality.High720)},
    {46, new ItagDescriptor(Container.WebM, AudioEncoding.Vorbis, VideoEncoding.Vp8, VideoQuality.High1080)},
    {59, new ItagDescriptor(Container.Mp4, AudioEncoding.Aac, VideoEncoding.H264, VideoQuality.Medium480)},
    {78, new ItagDescriptor(Container.Mp4, AudioEncoding.Aac, VideoEncoding.H264, VideoQuality.Medium480)},
    {82, new ItagDescriptor(Container.Mp4, AudioEncoding.Aac, VideoEncoding.H264, VideoQuality.Medium360)},
    {83, new ItagDescriptor(Container.Mp4, AudioEncoding.Aac, VideoEncoding.H264, VideoQuality.Medium480)},
    {84, new ItagDescriptor(Container.Mp4, AudioEncoding.Aac, VideoEncoding.H264, VideoQuality.High720)},
    {85, new ItagDescriptor(Container.Mp4, AudioEncoding.Aac, VideoEncoding.H264, VideoQuality.High1080)},
    {91, new ItagDescriptor(Container.Mp4, AudioEncoding.Aac, VideoEncoding.H264, VideoQuality.Low144)},
    {92, new ItagDescriptor(Container.Mp4, AudioEncoding.Aac, VideoEncoding.H264, VideoQuality.Low240)},
    {93, new ItagDescriptor(Container.Mp4, AudioEncoding.Aac, VideoEncoding.H264, VideoQuality.Medium360)},
    {94, new ItagDescriptor(Container.Mp4, AudioEncoding.Aac, VideoEncoding.H264, VideoQuality.Medium480)},
    {95, new ItagDescriptor(Container.Mp4, AudioEncoding.Aac, VideoEncoding.H264, VideoQuality.High720)},
    {96, new ItagDescriptor(Container.Mp4, AudioEncoding.Aac, VideoEncoding.H264, VideoQuality.High1080)},
    {100, new ItagDescriptor(Container.WebM, AudioEncoding.Vorbis, VideoEncoding.Vp8, VideoQuality.Medium360)},
    {101, new ItagDescriptor(Container.WebM, AudioEncoding.Vorbis, VideoEncoding.Vp8, VideoQuality.Medium480)},
    {102, new ItagDescriptor(Container.WebM, AudioEncoding.Vorbis, VideoEncoding.Vp8, VideoQuality.High720)},
    {132, new ItagDescriptor(Container.Mp4, AudioEncoding.Aac, VideoEncoding.H264, VideoQuality.Low240)},
    {151, new ItagDescriptor(Container.Mp4, AudioEncoding.Aac, VideoEncoding.H264, VideoQuality.Low144)},

    // Video-only (mp4)
    {133, new ItagDescriptor(Container.Mp4, null, VideoEncoding.H264, VideoQuality.Low240)},
    {134, new ItagDescriptor(Container.Mp4, null, VideoEncoding.H264, VideoQuality.Medium360)},
    {135, new ItagDescriptor(Container.Mp4, null, VideoEncoding.H264, VideoQuality.Medium480)},
    {136, new ItagDescriptor(Container.Mp4, null, VideoEncoding.H264, VideoQuality.High720)},
    {137, new ItagDescriptor(Container.Mp4, null, VideoEncoding.H264, VideoQuality.High1080)},
    {138, new ItagDescriptor(Container.Mp4, null, VideoEncoding.H264, VideoQuality.High4320)},
    {160, new ItagDescriptor(Container.Mp4, null, VideoEncoding.H264, VideoQuality.Low144)},
    {212, new ItagDescriptor(Container.Mp4, null, VideoEncoding.H264, VideoQuality.Medium480)},
    {213, new ItagDescriptor(Container.Mp4, null, VideoEncoding.H264, VideoQuality.Medium480)},
    {214, new ItagDescriptor(Container.Mp4, null, VideoEncoding.H264, VideoQuality.High720)},
    {215, new ItagDescriptor(Container.Mp4, null, VideoEncoding.H264, VideoQuality.High720)},
    {216, new ItagDescriptor(Container.Mp4, null, VideoEncoding.H264, VideoQuality.High1080)},
    {217, new ItagDescriptor(Container.Mp4, null, VideoEncoding.H264, VideoQuality.High1080)},
    {264, new ItagDescriptor(Container.Mp4, null, VideoEncoding.H264, VideoQuality.High1440)},
    {266, new ItagDescriptor(Container.Mp4, null, VideoEncoding.H264, VideoQuality.High2160)},
    {298, new ItagDescriptor(Container.Mp4, null, VideoEncoding.H264, VideoQuality.High720)},
    {299, new ItagDescriptor(Container.Mp4, null, VideoEncoding.H264, VideoQuality.High1080)},

    // Video-only (webm)
    {167, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp8, VideoQuality.Medium360)},
    {168, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp8, VideoQuality.Medium480)},
    {169, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp8, VideoQuality.High720)},
    {170, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp8, VideoQuality.High1080)},
    {218, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp8, VideoQuality.Medium480)},
    {219, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp8, VideoQuality.Medium480)},
    {242, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.Low240)},
    {243, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.Medium360)},
    {244, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.Medium480)},
    {245, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.Medium480)},
    {246, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.Medium480)},
    {247, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.High720)},
    {248, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.High1080)},
    {271, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.High1440)},
    {272, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.High2160)},
    {278, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.Low144)},
    {302, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.High720)},
    {303, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.High1080)},
    {308, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.High1440)},
    {313, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.High2160)},
    {315, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.High2160)},
    {330, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.Low144)},
    {331, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.Low240)},
    {332, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.Medium360)},
    {333, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.Medium480)},
    {334, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.High720)},
    {335, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.High1080)},
    {336, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.High1440)},
    {337, new ItagDescriptor(Container.WebM, null, VideoEncoding.Vp9, VideoQuality.High2160)},

    // Audio-only (mp4)
    {139, new ItagDescriptor(Container.M4A, AudioEncoding.Aac, null, null)},
    {140, new ItagDescriptor(Container.M4A, AudioEncoding.Aac, null, null)},
    {141, new ItagDescriptor(Container.M4A, AudioEncoding.Aac, null, null)},
    {256, new ItagDescriptor(Container.M4A, AudioEncoding.Aac, null, null)},
    {258, new ItagDescriptor(Container.M4A, AudioEncoding.Aac, null, null)},
    {325, new ItagDescriptor(Container.M4A, AudioEncoding.Aac, null, null)},
    {328, new ItagDescriptor(Container.M4A, AudioEncoding.Aac, null, null)},

    // Audio-only (webm)
    {171, new ItagDescriptor(Container.WebM, AudioEncoding.Vorbis, null, null)},
    {172, new ItagDescriptor(Container.WebM, AudioEncoding.Vorbis, null, null)},
    {249, new ItagDescriptor(Container.WebM, AudioEncoding.Opus, null, null)},
    {250, new ItagDescriptor(Container.WebM, AudioEncoding.Opus, null, null)},
    {251, new ItagDescriptor(Container.WebM, AudioEncoding.Opus, null, null)}
};