[Windows] output template: unsupported format character '/'

[bato3]

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Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2018.02.08. 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 Issues with outdated version will be rejected.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 2018.02.08

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• Searched the bugtracker for similar issues including closed ones
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C:\Users\jontek>youtube-dl -o "%(extractor)s/%(id).3/%(id)s-%(height)s.%(ext)s" http://openload.co/embed/f_rLF3gB15A/ --verbose
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-o', '%(extractor)s/%(id).3/%(id)s-%(height)s.%(ext)s', 'http://openload.co/embed/f_rLF3gB15A/', '--verbose']
[debug] Encodings: locale cp1250, fs mbcs, out cp852, pref cp1250
[debug] youtube-dl version 2018.02.08
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.16299
[debug] exe versions: phantomjs 2.1.1
[debug] Proxy map: {}
[Openload] f_rLF3gB15A: Downloading embed webpage
[Openload] f_rLF3gB15A: Executing JS on webpage
[debug] Default format spec: best/bestvideo+bestaudio
ERROR: Error in output template: unsupported format character '/' (0x2f) at index 21 (encoding: 'cp1250')
Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpn4uo9muj\build\youtube_dl\YoutubeDL.py", line 699, in prepare_filename
ValueError: unsupported format character '/' (0x2f) at index 21

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I want to organize files in directories by the structure: extractor / part-of-id / id.

Of course, catalogs are not created before.

Command youtube-dl -o "%(id).3s%(extractor)s-%(id)s-%(height)s.%(ext)s" http://openload.co/embed/f_rLF3gB15A/ generate correct name, but save file in current directory.

encoding: 'cp1250' - this is for Polish.

[dstftw]

%(id).3

Incorrect.

[bato3]

Correct

C:\Users\jontek\tmp>youtube-dl -o "%(id).3s%(extractor)s-%(id)s-%(height)s.%(ext)s" http://openload.co/embed/f_rLF3gB15A/
[Openload] f_rLF3gB15A: Downloading embed webpage
[Openload] f_rLF3gB15A: Executing JS on webpage
[download] Destination: f_rOpenload-f_rLF3gB15A-NA.mp4
[download]   0.4% of 267.09MiB at  1.26MiB/s ETA 03:30
ERROR: Interrupted by user

C:\Users\jontek\tmp>dir
10.02.2018  22:25         1 047 552 f_rOpenload-f_rLF3gB15A-NA.mp4.part

[bato3]

eh... should be %(id).3s