Youtube: Multifeed playlist video not recognized

[beta2k]

Please follow the guide below

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Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2018.12.09. If it's not, read this FAQ entry and update. Issues with outdated version will be rejected.

• I've verified and I assure that I'm running youtube-dl 2018.12.09

Before submitting an issue make sure you have:

• At least skimmed through the README, most notably the FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones
• Checked that provided video/audio/playlist URLs (if any) are alive and playable in a browser

What is the purpose of your issue?

• Bug report (encountered problems with youtube-dl)
• Site support request (request for adding support for a new site)
• Feature request (request for a new functionality)
• Question
• Other

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The following sections concretize particular purposed issues, you can erase any section (the contents between triple ---) not applicable to your issue

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If the purpose of this issue is a bug report, site support request or you are not completely sure provide the full verbose output as follows:

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

D:\>youtube-dl.exe -v -f best https://www.youtube.com/watch?v=K1c4iTBYUN8
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', '-f', 'best', 'https://www.youtube.com/watch?v=K1c4iTBYUN8']
[debug] Encodings: locale cp1252, fs mbcs, out cp850, pref cp1252
[debug] youtube-dl version 2018.12.09
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.17134
[debug] exe versions: ffmpeg N-89951-g3caecf7ce8, ffprobe N-89951-g3caecf7ce8
[debug] Proxy map: {}
[youtube] K1c4iTBYUN8: Downloading webpage
[youtube] K1c4iTBYUN8: Downloading video info webpage
[youtube] K1c4iTBYUN8: Downloading MPD manifest
[youtube] K1c4iTBYUN8: Downloading MPD manifest
[debug] Invoking downloader on 'https://r1---sn-4g5e6nz7.googlevideo.com/videoplayback?itag=22&c=WEB&txp=7201222&key=yt6&mime=video%2Fmp4&id=o-ACzCvY8tLQ3QMppJW71I4QOT4wpqe9Qr3VwIMM2Pd5Ea&signature=2A629D800FC34DB8F1954FE425F5861AFB5A3A78.2D79995D0FA4ABD4BC7D7B8684E4F399D82B8EF5&ms=au%2Conr&mt=1544865317&mv=m&pl=32&expire=1544886974&mm=31%2C26&ip=2a02%3A8388%3A1683%3A1b00%3Ae583%3Ac06a%3Ae299%3A7a9a&mn=sn-4g5e6nz7%2Csn-h0jeenl7&requiressl=yes&ei=XcYUXJyFLYTS1gKp4piQDQ&source=youtube&initcwndbps=1641250&ipbits=0&sparams=dur%2Cei%2Cgcr%2Cid%2Cinitcwndbps%2Cip%2Cipbits%2Citag%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Cratebypass%2Crequiressl%2Csource%2Cexpire&lmt=1544837826661774&beids=9466586&gcr=at&fvip=1&dur=42900.491&ratebypass=yes'
[download] Destination: Yonex Italian International 2018 Main Draw-K1c4iTBYUN8.mp4

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Description of your issue, suggested solution and other information

For me it was always possible to download multifeed videos, that is, videos that contain multiple cameras or camera angles. One example is this video which contains 6 different cameras, each about 11h long: https://www.youtube.com/watch?v=K1c4iTBYUN8

However, when I use the command youtube-dl -f best https://www.youtube.com/watch?v=K1c4iTBYUN8 I get only the first camera/feed. What am I doing wrong?