can't download private videos / series

[uvulpos]

Checklist

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2019.11.28
• I've checked that all provided URLs are alive and playable in a browser (logged in)
• I've checked that all URLs and arguments with special characters are properly quoted or escaped
• I've searched the bugtracker for similar issues including closed ones

Description

I tried to download a series from google play but after the feature is missing to download these, I saw they're uploaded to youtube. My problem is I think I'm not able to log in to my account. Do I need to log in by username? By email? Or did I miss something? (url is a private video from me)

command

youtube-dl --username xxx@t-online.de --password pw123 -v https://www.youtube.com/watch?v=7W4tg02zDbQ

output

youtube-dl --username xxx@t-online.de --password pw123 -v https://www.youtube.com/watch?v=7W4tg02zDbQ
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--username', 'PRIVATE', '--password', 'PRIVATE', '-v', 'https://www.youtube.com/watch?v=7W4tg02zDbQ']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2019.11.28
[debug] Python version 3.6.9 (CPython) - Linux-4.15.0-70-generic-x86_64-with-LinuxMint-19.2-tina
[debug] exe versions: ffmpeg 3.4.6, ffprobe 3.4.6, rtmpdump 2.4
[debug] Proxy map: {}
[youtube] Downloading login page
[youtube] Looking up account info
[youtube] Logging in## Description

WRITE DESCRIPTION HERE
WARNING: Unable to extract result entry
[youtube] 7W4tg02zDbQ: Downloading webpage
[youtube] 7W4tg02zDbQ: Downloading embed webpage
[youtube] 7W4tg02zDbQ: Refetching age-gated info webpage
WARNING: Unable to extract video title
WARNING: unable to extract description; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
ERROR: Content Warning
If the owner of this video has granted you access, please sign in.
       This video is private.
Traceback (most recent call last):
  File "/home/vulpos/.local/lib/python3.6/site-packages/youtube_dl/YoutubeDL.py", line 796, in extract_info
    ie_result = ie.extract(url)
  File "/home/vulpos/.local/lib/python3.6/site-packages/youtube_dl/extractor/common.py", line 530, in extract
    ie_result = self._real_extract(url)
  File "/home/vulpos/.local/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 2148, in _real_extract
    raise ExtractorError(error_message, expected=True)
youtube_dl.utils.ExtractorError: Content Warning
If the owner of this video has granted you access, please sign in.
       This video is private.

version

youtube-dl --version
2019.11.28