Youtube-dl in Ubuntu 14.04 return redirect link, not original video link

[acorn421]

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Add -v flag to your command line you run youtube-dl with, copy the whole output and insert it here. It should look similar to one below (replace it with your log inserted between triple ```):

[Ubuntu 14.04]
$ youtube-dl -g https://www.youtube.com/watch?v=-Sl8zi1ISdw -v
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'-g', u'https://www.youtube.com/watch?v=-Sl8zi1ISdw', u'-v']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2017.01.18
[debug] Python version 2.7.6 - Linux-3.13.0-74-generic-x86_64-with-Ubuntu-14.04-trusty
[debug] exe versions: ffmpeg 3.2.2, ffprobe 3.2.2
[debug] Proxy map: {}
https://r5---sn-ogueln7k.googlevideo.com/videoplayback?id=f9297cce2d4849dc&itag=248&source=youtube&requiressl=yes&mv=u&mn=sn-ogueln7k&mm=31&pl=16&ms=au&nh=IgpwcjAzLm5ydDE5KgkxMjcuMC4wLjE&ratebypass=yes&mime=video/webm&gir=yes&clen=69865286&lmt=1476762069197443&dur=241.583&signature=46753D9BFEF1BD8B0233E30452A7EB352437DE06.0EBB7BF9F6643246B3783E175CC823069DD387D1&mt=1484812962&key=dg_yt0&upn=zWYblsaiNak&ip=52.78.47.81&ipbits=0&expire=1484834626&sparams=ip,ipbits,expire,id,itag,source,requiressl,mv,mn,mm,pl,ms,nh,ratebypass,mime,gir,clen,lmt,dur
https://r5---sn-ogueln7k.googlevideo.com/videoplayback?id=f9297cce2d4849dc&itag=251&source=youtube&requiressl=yes&mv=u&mn=sn-ogueln7k&mm=31&pl=16&ms=au&nh=IgpwcjAzLm5ydDE5KgkxMjcuMC4wLjE&ratebypass=yes&mime=audio/webm&gir=yes&clen=3904190&lmt=1476761860096521&dur=241.641&signature=0D14BD2832CC9F43E9DCBD7C47677B1AB59B089E.6BA858B819E15C3BC42B82CC63BC0949DE08FF31&mt=1484812962&key=dg_yt0&upn=zWYblsaiNak&ip=52.78.47.81&ipbits=0&expire=1484834626&sparams=ip,ipbits,expire,id,itag,source,requiressl,mv,mn,mm,pl,ms,nh,ratebypass,mime,gir,clen,lmt,dur

[Mac OS]

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I'm using youtube-dl with -g option to play original youtube video in my website.
I made simple server that return original video url.
It's all okay when I test in my local Mac.
However, when I deploy my youtube-dl server to Ubuntu 14.04, It's little bit strange.
I'm using same version of youtube-dl(2017.01.18) and same version of python(2.7.12) in both Mac and Ubuntu, but they give me different url.

The main problem is the url from Ubuntu is not real original video url. It redirects to another video url.(In above case, https://r2---sn-3u-bh2r.googlevideo.com/videoplayback?pl=16&ei=NXSAWLe3KIqJ4gK3l6SIBw&upn=Wgx7FL9FhmU&ipbits=0&requiressl=yes&itag=22&ratebypass=yes&dur=241.696&lmt=1476952144664504&source=youtube&sparams=dur,ei,expire,id,ip,ipbits,ipbypass,itag,lmt,mime,mm,mn,ms,mv,nh,pcm2cms,pl,ratebypass,requiressl,source,upn&key=cms1&mime=video%2Fmp4&expire=1484834965&id=o-AEo6sQA7hwMJULAegASwEhfi2ZdV2gpJELqOXnDuNIzS&signature=5EC2ACF647F1BCA174DD3A9B470B81C91349E363.29E250BFE6C3A7B09E7ACAFBFC4E1C4509D6529F&ip=175.209.23.156&redirect_counter=1&req_id=9deccb23abc7a3ee&cms_redirect=yes&ipbypass=yes&mm=31&mn=sn-3u-bh2r&ms=au&mt=1484813143&mv=m&pcm2cms=yes)
I need real video link because i have to load same video a lot of time. When i load the videos with wrong link, It's became really slow...(I think it's because of browser cache or something..)

Why is it different and can you fix it?
Thanks.

[yan12125]

URLs starting with https://r2---sn-3u-bh2r.googlevideo.com are original links.

When i load the videos with wrong link, It's became really slow...

Most likely that's due to incorrect CDNs. #9001 (comment) may help.

[acorn421]

@yan12125 Thanks for your comment.
However, your suggestion doesn't work in my case.

There is no problem when i use one video tag.
But, with many video tag with same src, it has a problem.

I found that the problem is chrome doesn't cache redirected video, so when I add new video dynamically, chrome unnecessarily requests the same video every time.
It makes my website extremely slow.
In Firefox and Safari, everything is fine.

Also, I found that chrome cache all videos well with direct video link.
I can't get redirect location because of CORS and w3c specification in browser.
So, is there any way to get direct video link for every user in any location from youtube-dl server?
I think it's impossible due to security reasons, but if you have any suggestion please help me.

[yan12125]

I don't quite understand your problems, but I guess that's a Chrome problem rather than YouTube or youtube-dl. In my experience Firefox usually follows w3c standards while Chrome often invent their own standards.