C#实现的优酷真实视频地址解析功能（2014新算法）

string getVid(string url)
{
    string strRegex = "(?<=id_)(\\w+)";
    Regex reg = new Regex(strRegex);
    Match match = reg.Match(url);
    return match.ToString();
}

{ "data": [ {
            "ip": 1991941296,
            "ep": "MwXRTAsbJLnb0PbJ8uJxAdSivUU11wnKXxc=",
            "segs": {
                "hd2": [
                    {
                        "no": "0",
                        "size": "34602810",
                        "seconds": 205,
                        "k": "248fe14b4c1b37302411f67a",
                        "k2": "1c8e113cecad924c5"
                    },
                    {
                        "no": "1",
                    },] }, } ],}

private static string myEncoder(string a, byte[] c, bool isToBase64)
        {
            string result = "";
            List<Byte> bytesR = new List<byte>();
            int f = 0, h = 0, q = 0;
            int[] b = new int[256];
            for (int i = 0; i < 256; i++)
                    b[i] = i;
            while (h < 256)
            {
                f = (f + b[h] + a[h % a.Length]) % 256;
                int temp = b[h];
                b[h] = b[f];
                b[f] = temp;
                h++;
            }
            f = 0; h = 0; q = 0;
            while (q < c.Length)
            {
                h = (h + 1) % 256;
                f = (f + b[h]) % 256;
                int temp = b[h];
                b[h] = b[f];
                b[f] = temp;
                byte[] bytes = new byte[] { (byte)(c[q] ^ b[(b[h] + b[f]) % 256]) };
                bytesR.Add(bytes[0]);
                result += System.Text.ASCIIEncoding.ASCII.GetString(bytes);
                q++;
            }
            if (isToBase64)
            {
                Byte[] byteR = bytesR.ToArray();
                result = Convert.ToBase64String(byteR);
            }
            return result;
        }
        public static void getEp(string vid, string ep, ref string pNew, ref string token, ref string sid)
        {
            string template1 = "becaf9be";
            string template2 = "bf7e5f01";
            byte[] bytes = Convert.FromBase64String(ep);
            ep = ystem.Text.ASCIIEncoding.ASCII.GetString(bytes);
            string temp = myEncoder(template1, bytes, false);
            string[] part = temp.Split('_');
            sid = part[0];
            token = part[1];
            string whole = string.Format("{0}_{1}_{2}", sid, vid, token);
            byte[] newbytes = System.Text.ASCIIEncoding.ASCII.GetBytes(whole);
            epNew = myEncoder(template2, newbytes, true);
        }

“segs”,”type”,”清晰度”
"hd3", "flv", "1080P"
"hd2", "flv", "超清"
"mp4", "mp4", "高清"
"flvhd", "flv", "高清"
"flv", "flv", "标清"
"3gphd", "3gp", "高清"

#EXTM3U
#EXT-X-TARGETDURATION:12
#EXT-X-VERSION:3
#EXTINF:6,
http://59.108.137.14/696CD107FE4D821FFBF173EB3/03000208005430B01849631468DEFEC61C5678-3A78-37BA-1971-21A0D4EEA0E7.flv?ts_start=0&ts_end=5.9&ts_seg_no=0&ts_keyframe=1
#EXTINF:5.533,
http://59.108.137.14/696CD107FE4D821FFBF173EB3/03000208005430B01849631468DEFEC61C5678-3A78-37BA-1971-21A0D4EEA0E7.flv?ts_start=5.9&ts_end=11.433&ts_seg_no=1&ts_keyframe=1
#EXTINF:5.467,
http://59.108.137.14/696CD107FE4D821FFBF173EB3/03000208005430B01849631468DEFEC61C5678-3A78-37BA-1971-21A0D4EEA0E7.flv?ts_start=11.433&ts_end=16.9&ts_seg_no=2&ts_keyframe=1
#EXTINF:9.267,