[Broken] Youtube output folder title problems

[snvoid]

Checklist

• [x] I'm reporting a broken site support
• [x] I've verified that I'm running youtube-dlc version 2020.10.31
• [x ] I've checked that all provided URLs are alive and playable in a browser
• [x ] I've checked that all URLs and arguments with special characters are properly quoted or escaped
• [x ] I've searched the bugtracker for similar issues including closed ones

Verbose log

!youtube-dlc --download-archive '/content/archive/archive.txt' -v --force-ipv4 --playlist-start 1 --playlist-end 33  -f best -icw -o  "/content/download/%(playlist)s/%(upload_date)s - %(title)s.%(ext)s" https://www.youtube.com/user/RSDMaximilian/videos
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--download-archive', '/content/archive/archive.txt', '-v', '--force-ipv4', '--playlist-start', '1', '--playlist-end', '33', '-f', 'best', '-icw', '-o', '/content/download/%(playlist)s/%(upload_date)s - %(title)s.%(ext)s', 'https://www.youtube.com/user/RSDMaximilian/videos']
[debug] Loading archive file '/content/archive/archive.txt'
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dlc version 2020.11.11-3
[debug] Python version 3.6.9 (CPython) - Linux-4.19.112+-x86_64-with-Ubuntu-18.04-bionic
[debug] exe versions: ffmpeg 3.4.8, ffprobe 3.4.8
[debug] Proxy map: {}
[youtube:user] RSDMaximilian: Downloading channel page
[youtube:playlist] UUmIq20BSpfq7Y5qS-dQudog: Downloading webpage
[download] Downloading playlist: UUmIq20BSpfq7Y5qS-dQudog```

## Description

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Comparing this functionality with youtube-dl (original) which works fine. 

When using yt-dlc, when selecting output as (playlist) the name of the folder ends up being the string "UUmIq20BSpfq7Y5qS-dQudog" instead of the title of the playlist or in this case channel. I tried changing the output to (channel), (playlist_title) and (playlist) and all result in the same url string. 

In youtube-dl (original) the folder is titled correctly with the playlist or channel name regardless of if you use (channel) or (playlist). 

playlist (string): Name or id of the playlist that contains the video
channel (string): Full name of the channel the video is uploaded on

[pukkandan]

channel is not currently working for either ytdl or dlc. playlist is fixed in #280