some popular videos on youtube error

[bjgo]

as example — none of Cinemassacre videos works. Safari 10 and 9, clicktoplugin 3.2, last youtube killer from github

videos:
https://www.youtube.com/watch?v=Jiz2Hv9vlDs
https://www.youtube.com/watch?v=Bak9qqTCW-E

logs from my Console app:
2/22/17 11:35:25.271 PM com.apple.WebKit.WebContent[3565]: [23:35:25.270] figHttpRequestDidReceiveResponseCallback signalled err=-12660 (kFigHTTPError_Forbidden) (403 Forbidden) at /Library/Caches/com.apple.xbs/Sources/CoreMedia/CoreMedia-1731.15.20/Prototypes/FigHTTP/FigHTTPRequestCFURLConnection.c line 2110

2/22/17 11:35:25.271 PM com.apple.WebKit.WebContent[3565]: [23:35:25.271] HTTPRequest figHTTPRequestCreateErrorComment: encountered an error: HTTP 403: Forbidden

2/22/17 11:35:25.271 PM com.apple.WebKit.WebContent[3565]: [23:35:25.271] HTTPRequest figHttpRequestDidReceiveResponseCallback: received http response 403 (error -12660) for https://r1---sn-ug5onuxaxjvh-n8vs.googlevideo.com/videoplayback?pcm2cms=yes&source=youtube&dur=2032.535&id=o-AFB9psWDr8uWiz3pfvUHPAzkvwJ-yh0G4vP5ztNt-Zce&lmt=1487745356659604&itag=18&requiressl=yes&ip=81.26.90.176&expire=1487802912&initcwndbps=40000&ratebypass=yes&ipbits=0&mime=video%2Fmp4&upn=8efBesRzYPU&gir=yes&sparams=clen%2Cdur%2Cei%2Cgcr%2Cgir%2Cid%2Cinitcwndbps%2Cip%2Cipbits%2Citag%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cpcm2cms%2Cpl%2Cratebypass%2Crequiressl%2Csource%2Cupn%2Cexpire&gcr=ru&clen=172158182&mt=1487781034&pl=23&mv=m&ei=wL2tWIPJJoKyYOrkmdAI&ms=au&mm=31&mn=sn-ug5onuxaxjvh-n8vs&key=yt6&signature=6A66A63E2942F051751FD2FD46714315DAED0E96BD2.E3FDD2CC21D74D8FD8F30C7AEF6DBDFF0C27058E&title=Contra%3A%20Hard%20Corps%20(Sega%20Genesis)%20Full%20Playthrough%20%5B360p%5D

2/22/17 11:35:25.271 PM com.apple.WebKit.WebContent[3565]: [23:35:25.271] HTTPRequest figHTTPDumpFinalURLAndRemoteAddress: address 188.43.61.12 final url https://r1---sn-ug5onuxaxjvh-n8vs.googlevideo.com/videoplayback?pcm2cms=yes&source=youtube&dur=2032.535&id=o-AFB9psWDr8uWiz3pfvUHPAzkvwJ-yh0G4vP5ztNt-Zce&lmt=1487745356659604&itag=18&requiressl=yes&ip=81.26.90.176&expire=1487802912&initcwndbps=40000&ratebypass=yes&ipbits=0&mime=video%2Fmp4&upn=8efBesRzYPU&gir=yes&sparams=clen%2Cdur%2Cei%2Cgcr%2Cgir%2Cid%2Cinitcwndbps%2Cip%2Cipbits%2Citag%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cpcm2cms%2Cpl%2Cratebypass%2Crequiressl%2Csource%2Cupn%2Cexpire&gcr=ru&clen=172158182&mt=1487781034&pl=23&mv=m&ei=wL2tWIPJJoKyYOrkmdAI&ms=au&mm=31&mn=sn-ug5onuxaxjvh-n8vs&key=yt6&signature=6A66A63E2942F051751FD2FD46714315DAED0E96BD2.E3FDD2CC21D74D8FD8F30C7AEF6DBDFF0C27058E&title=Contra%3A%20Hard%20Corps%20(Sega%20Genesis)%20Full%20Playthrough%20%5B360p%5D

2/22/17 11:35:27.427 PM com.apple.WebKit.WebContent[3565]: [23:35:27.427] clientHandledCustomURLCancel signalled err=-12663 (kFigHTTPError_ParamErr) (No matching request found) at /Library/Caches/com.apple.xbs/Sources/CoreMedia/CoreMedia-1731.15.20/Prototypes/FigHTTP/FigClientHandledCustomURLProvider.c line 380

2/22/17 11:35:27.428 PM com.apple.WebKit.WebContent[3565]: [23:35:27.428] clientHandledCustomURLCancel signalled err=-12663 (kFigHTTPError_ParamErr) (No matching request found) at /Library/Caches/com.apple.xbs/Sources/CoreMedia/CoreMedia-1731.15.20/Prototypes/FigHTTP/FigClientHandledCustomURLProvider.c line 380

2/22/17 11:35:27.429 PM com.apple.WebKit.WebContent[3565]: *** -[AVAssetResourceLoadingRequest finishLoading] was sent to an instance of AVAssetResourceLoadingRequest that was already finished. Ignoring.