Youtube video download error access denied 403

Question

i am using this Athlon1600/youtube-downloader php script to download youtube videos. Some of the VEVO and other videos are not downloading giving the error 403 Not Authorized. I have tried many scripts but all them failed. But some of the websites are able to generate the links that can download those VEVO videos not sure how. Can any body help?

Here's the link from which the video is downloadable

https://r5---sn-qxoedn7d.c.doc-0-0-sj.sj.googleusercontent.com/videoplayback?itag=22&ratebypass=yes&ipbits=0&mime=video/mp4&pl=28&dur=234.242&expire=1536600787&c=WEB&ei=c1aWW4oMpIm1B4iZuagL&id=o-AAhuIcHUeeFJYKMi_T5TWB_hzVe9Qd1-1FjH4S6MTAE9&lmt=1532738669204703&ip=107.178.194.20&sparams=dur,ei,id,ip,ipbits,itag,lmt,mime,mm,mn,ms,mv,pl,ratebypass,requiressl,source,expire&mt=1536579051&mv=m&ms=au&source=youtube&key=yt6&requiressl=yes&mm=31&mn=sn-qxoedn7d&signature=90BF262E112E3C74C239040D5F90E2CBB4760FF6.D18603AD4220FCF4E4EE71D36CA5D0D926A596BD&downloadvideo=1&title=KatyPerry-Califor-Download-From-ytpak.com&filename=KatyPerry-Califor-Download-From&extension=mp4

And here's the link which is producing error

https://r5---sn-p5qlsndr.googlevideo.com/videoplayback?mv=m&dur=234.242&source=youtube&ms=au%2Conr&lmt=1532738669204703&requiressl=yes&ip=205.186.128.210&pl=19&mn=sn-p5qlsndr%2Csn-vgqsknee&pcm2=no&mm=31%2C26&key=yt6&id=o-ADP_WkeslC4LFx1Za7lU4VO9_fMRvl_6T_VExuCpxZ_A&itag=22&mt=1536591076&expire=1536612757&sparams=dur%2Cei%2Cid%2Cip%2Cipbits%2Citag%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cpcm2%2Cpl%2Cratebypass%2Crequiressl%2Csource%2Cexpire&ei=NYWWW9uRBJSEhwaVzIfYCQ&mime=video%2Fmp4&fvip=5&ratebypass=yes&c=WEB&ipbits=0&signature=FF5B396B5DB649116BCB00D5907EBAF5EB804B45A.2DFC0D69B1860EBE376A4D488747909CD9B674DDD1

Answer 1

I have ended up using youtube-dl python library. It works great and download almost every video.