Where can I check the youtube api?

[HanHoRang]

I have a question during the streaming test. Streaming numbers don't go up. It is judged that this problem is not recognized because the api arg is different. I would like to get information related to this.

var args = new Dictionary<string, string>
                        {
                            ["ns"] = "yt",
                            ["el"] = "detailpage",
                            ["cpn"] = cpn,
                            ["docid"] = id,
                            ["ver"] = "2",
                            ["cmt"] = et.ToString(),
                            ["ei"] = ei,
                            ["fmt"] = "243",
                            ["fs"] = "0",
                            ["rt"] = rt.ToString(),
                            ["of"] = of,
                            ["euri"] = "",
                            ["lact"] = lact.ToString(),
                            ["live"] = "dvr",
                            ["cl"] = cl,
                            ["state"] = "playing",
                            ["vm"] = vm,
                            ["volume"] = "100",
                            ["cbr"] = "Firefox",
                            ["cbrver"] = "83.0",
                            ["c"] = "WEB",
                            ["cplayer"] = "UNIPLAYER",
                            ["cver"] = "2.20201210.01.00",
                            ["cos"] = "Windows",
                            ["cosver"] = "10.0",
                            ["cplatform"] = "DESKTOP",
                            ["delay"] = "5",
                            ["hl"] = "en_US",
                            ["rtn"] = rtn.ToString(),
                            ["aftm"] = "140",
                            ["rti"] = rt.ToString(),
                            ["muted"] = "0",
                            ["st"] = st.ToString(),
                            ["et"] = et.ToString(),
                            ["lio"] = lio.ToString()
                        };

Can you please explain the youtube api arg used in your code?

[Airkek]

it's non-public api and it not documented