Youtube debug info field details

I am just doing a r&d on youtube video details. When we play a video in youtube and if we do right click, then we can see an option called copy debug info. If we copy that then there are lot of fields coming as below, I am just curious to know the details of these below fields.

{"ns": "yt","el": "detailpage","cpn": "TA1LSqRVROm9Q2rb","docid": "tPDj7FhbUso","ver": 2,"referrer": "https://www.youtube.com/feed/history","cmt": "208.944","ei": "Ups5X-iDO8ng4-EP7o6KwAg","fmt": "247","fs": "0","rt": "151.471","of": "yuFWq23SkzutVGx461bO4g","euri": "","lact": 7,"cl": "326301777","mos": 0,"state": "4","vm": "CAEQARgEKiBsUmpoTXRxc1czUTVHZ2RJbmktOXBNdnY3X3JnV3ItNjoyQUdiNlo4T3BuV0tmTXhwbW5wWDZjUDA3X3JPYU5PXzVSd1Bha2szZE9jNEhCY0ZQTkE","volume": 100,"subscribed": "1","cbr": "Chrome","cbrver": "84.0.4147.125","c": "WEB","cver": "2.20200814.00.00","cplayer": "UNIPLAYER","cos": "Macintosh","cosver": "10_15_6","hl": "en_US","cr": "IN","len": "268.121","fexp": "23744176,23804281,23839597,23856950,23857950,23858057,23859802,23862346,23868323,23880389,23882502,23883098,23884386,23890960,23895671,23900945,23907595,23911055,23915993,23916148,23918272,23918598,23927906,23928508,23930220,23931938,23934047,23934090,23934970,23936412,24631210,3300107,3300133,3300161,3313321,3316358,3316377,3317374,3317643,3318816,3318887,3318889,3319024,9405957,9449243","afmt": "251","inview": "NaN","vct": "208.944","vd": "268.121","vpl": "207.000-208.944","vbu": "204.000-268.121","vpa": "1","vsk": "0","ven": "0","vpr": "1","vrs": "4","vns": "2","vec": "null","vemsg": "","vvol": "1","vdom": "1","vsrc": "1","vw": 1159,"vh": 652,"creationTime": 158827.80500000808,"totalVideoFrames": 128,"droppedVideoFrames": 0,"corruptedVideoFrames": 0,"lct": "208.944","lsk": false,"lmf": false,"lbw": "993748.652","lhd": "0.057","lst": "0.000","laa": "itag=251,type=3,seg=26,range=3299085-3408885,time=260.0-268.1,off=0,len=109801,end=1,eos=1","lva": "itag=247,type=3,seg=53,range=17411843-17472031,time=264.0-268.1,off=0,len=60189,end=1,eos=1","lar": "itag=251,type=3,seg=26,range=3299085-3408885,time=260.0-268.1,off=0,len=109801,end=1,eos=1","lvr": "itag=247,type=3,seg=53,range=17411843-17472031,time=264.0-268.1,off=0,len=60189,end=1,eos=1","lab": "200.001-268.121","lvb": "204.000-268.080","ismb": 3000000,"relative_loudness": "-5.140","optimal_format": "720p","user_qual": "auto","debug_videoId": "tPDj7FhbUso","0sz": false,"op": "","yof": false,"dis": "","gpu": "Intel(R)_UHD_Graphics_630","cgr": true,"debug_playbackQuality": "hd720","debug_date": "Mon Aug 17 2020 02:19:46 GMT+0530 (India Standard Time)"}

For an example - docid filed is known for the video Id of youtube. Like that I wanna know other field details. If anyone can help me with, that would be great..