[youtube] Add support for channel search URLs

[keybounce]

• Site support request (request for adding support for a new site)

keybounceMBP:SHO michael$ 
keybounceMBP:SHO michael$ youtube-dl -v "https://www.youtube.com/user/Vechz/search?query=building+super+hostil
e+online+episode" --playlist-end 17
[debug] System config: []
[debug] User config: [u'-o', u'%(title)s.%(ext)s', u'-f', u'\nbest[ext=mp4][height>431][height<=480]/\nbestvideo[ext=mp4][height=480]+bestaudio[ext=m4a]/\nbest[ext=mp4][height>340][height<=431]/\nbestvideo[ext=mp4][height>360][height<=576]+bestaudio/\nbest[height>340][height<=576]/\nbestvideo[height>360][height<=576]+bestaudio/\nbestvideo[height=360]+bestaudio/\nbest[ext=mp4][height>=280][height<=360]/\nbest[height<=576]/\nworst', u'--write-sub', u'--write-auto-sub', u'--sub-lang', u'en,enUS', u'--sub-format', u'srt/ass/best', u'--embed-subs', u'--recode-video', u'mp4', u'--mark-watched']
[debug] Command-line args: [u'-v', u'https://www.youtube.com/user/Vechz/search?query=building+super+hostile+online+episode', u'--playlist-end', u'17']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2016.08.24
[debug] Python version 2.7.5 - Darwin-13.4.0-x86_64-i386-64bit
[debug] exe versions: ffmpeg 3.1.1, ffprobe 3.1.1, rtmpdump 2.4
[debug] Proxy map: {}
[youtube:user] Vechz: Downloading channel page
[youtube:user] Vechz: Downloading page #1
[download] Downloading playlist: Vechz
[youtube:user] playlist Vechz: Downloading 17 videos
[download] Downloading video 1 of 17
[youtube] Qd3cISDrfkU: Downloading webpage
[youtube] Qd3cISDrfkU: Downloading video info webpage
[youtube] Qd3cISDrfkU: Extracting video information
WARNING: video doesn't have subtitles
[youtube] Qd3cISDrfkU: Looking for automatic captions
[youtube] Qd3cISDrfkU: Downloading MPD manifest
WARNING: enUS subtitles not available for Qd3cISDrfkU
[info] Writing video subtitles to: Building Super Hostile Online Episode 15 Compacting Valgarde.en.vtt
[debug] Invoking downloader on u'https://r13---sn-a5m7lnes.googlevideo.com/videoplayback?id=41dddc2120eb7e45&itag=135&source=youtube&requiressl=yes&mm=31&initcwndbps=7712500&mv=m&ms=au&pl=19&nh=IgpwcjAzLmxheDE2KgkxMjcuMC4wLjE&mn=sn-a5m7lnes&ratebypass=yes&mime=video/mp4&gir=yes&clen=118011154&lmt=1471858000541375&dur=851.817&mt=1472006203&sver=3&fexp=9405963,9407155,9419451,9422596,9426977,9428398,9431012,9433096,9433221,9433946,9435526,9435914,9438292,9438327,9438662,9439580,9439886,9440758,9440927,9441010,9441468,9442424,9442426,9442686,9442984,9443187,9443479,9443561,9443914,9444659,9445738&upn=bgJija8Pcg8&key=dg_yt0&signature=245E9A11EA8FA2AB8802D87F3CEDB2CF11A12CCF.606A54E2BDA89F211A17C4556122C24437C64FB1&ip=64.201.108.45&ipbits=0&expire=1472028285&sparams=ip,ipbits,expire,id,itag,source,requiressl,mm,initcwndbps,mv,ms,pl,nh,mn,ratebypass,mime,gir,clen,lmt,dur'
[download] Resuming download at byte 62879644
[download] Destination: Building Super Hostile Online Episode 15 Compacting Valgarde.f135.mp4
[download]  59.5% of 112.54MiB at  3.05MiB/s ETA 00:14^C
ERROR: Interrupted by user
keybounceMBP:SHO michael$ 

I am trying to download the results of a search on youtube. The first 17 videos from that search are what I'm interested in. Not the most recent 17 uploads from Vechs.

[dstftw]

This is not a search on youtube but on a particular channel.