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%(ext)s broken in recent versions? #11890

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opened 2026-02-21 05:08:10 -05:00 by deekerman · 3 comments

deekerman commented

2026-02-21 05:08:10 -05:00

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Originally created by @SebiderSushi on GitHub (Oct 1, 2017).

I've verified and I assure that I'm running youtube-dl 2017.10.01

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

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)
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Description of your issue, suggested solution and other information

I'm using -o '%(ext)s/%(upload_date)s-%(title)s-%(id)s.%(ext)s' to group all files by format but in recent versions this seems to be broken somehow - all files are written into the same directory.

Current Output:
youtube-dl -o '%(ext)s/%(upload_date)s-%(title)s-%(id)s.%(ext)s' --write-thumbnail https://www.youtube.com/watch?v=afvnzFEIz4s
[...]
[youtube] afvnzFEIz4s: Writing thumbnail to: mp4/ 20170929-StarStarSpace #21 - Relativistischer Dopplereffekt-afvnzFEIz4s .jpg
[...]
[download] Destination: mp4/20170929-StarStarSpace #21 - Relativistischer Dopplereffekt-afvnzFEIz4s.f137.mp4

What I'd expect and what was happening before:
[youtube] afvnzFEIz4s: Writing thumbnail to: jpg/ 20170929-StarStarSpace #21 - Relativistischer Dopplereffekt-afvnzFEIz4s .jpg

Originally created by @SebiderSushi on GitHub (Oct 1, 2017). - [x] I've **verified** and **I assure** that I'm running youtube-dl **2017.10.01** ### Before submitting an *issue* make sure you have: - [x] At least skimmed through the [README](https://github.com/rg3/youtube-dl/blob/master/README.md), **most notably** the [FAQ](https://github.com/rg3/youtube-dl#faq) and [BUGS](https://github.com/rg3/youtube-dl#bugs) sections - [x] [Searched](https://github.com/rg3/youtube-dl/search?type=Issues) the bugtracker for similar issues including closed ones ### What is the purpose of your *issue*? - [x] 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 --- ### Description of your *issue*, suggested solution and other information I'm using -o '%(ext)s/%(upload_date)s-%(title)s-%(id)s.%(ext)s' to group all files by format but in recent versions this seems to be broken somehow - all files are written into the same directory. **Current Output:** youtube-dl -o '%(ext)s/%(upload_date)s-%(title)s-%(id)s.%(ext)s' --write-thumbnail https://www.youtube.com/watch?v=afvnzFEIz4s [...] [youtube] afvnzFEIz4s: Writing thumbnail to: **mp4/** 20170929-StarStarSpace #21 - Relativistischer Dopplereffekt-afvnzFEIz4s **.jpg** [...] [download] Destination: mp4/20170929-StarStarSpace #21 - Relativistischer Dopplereffekt-afvnzFEIz4s.f137.mp4 **What I'd expect and what was happening before:** [youtube] afvnzFEIz4s: Writing thumbnail to: **jpg/** 20170929-StarStarSpace #21 - Relativistischer Dopplereffekt-afvnzFEIz4s **.jpg**

deekerman

2026-02-21 05:08:10 -05:00

closed this issue
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deekerman commented

2026-02-21 05:08:15 -05:00

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@dstftw commented on GitHub (Oct 1, 2017):

ext (string): Video filename extension
Video

@dstftw commented on GitHub (Oct 1, 2017): >`ext` (string): Video filename extension >Video

deekerman commented

2026-02-21 05:08:15 -05:00

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@dstftw commented on GitHub (Oct 2, 2017):

Again, ext is video extension and the behaviour was always the same. No such "old behavior" you are claiming ever existed.

Also if this was consistent it should do this:
[youtube] afvnzFEIz4s: Writing thumbnail to: mp4 /20170929-StarStarSpace #21 - Relativistischer Dopplereffekt-afvnzFEIz4s .mp4

No, it's not. Otherwise it will overwrite video with thumbnail under mp4 ext.

@dstftw commented on GitHub (Oct 2, 2017): Again, `ext` is **video extension** and the behaviour was always the same. No such "old behavior" you are claiming **ever existed**. >Also if this was consistent it should do this: [youtube] afvnzFEIz4s: Writing thumbnail to: mp4 /20170929-StarStarSpace #21 - Relativistischer Dopplereffekt-afvnzFEIz4s .mp4 No, it's not. Otherwise it will overwrite video with thumbnail under `mp4` ext.

deekerman commented

2026-02-21 05:08:15 -05:00

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@SebiderSushi commented on GitHub (Oct 2, 2017):

Sorry, I was very sure that it did behave this way but I must've gotten confused somehow with my shellscripts to believe that this behaviour has ever been part of youtube-dl. I guess I have to apologize for being so stubborn about it.

To correct myself:
I would find it very useful if there was some attribute with the extension of the current file, so I could group my files into folders without any hassle.

@SebiderSushi commented on GitHub (Oct 2, 2017): Sorry, I was very sure that it did behave this way but I must've gotten confused somehow with my shellscripts to believe that this behaviour has ever been part of youtube-dl. I guess I have to apologize for being so stubborn about it. To correct myself: I would find it very useful if there was some attribute with the extension of the current file, so I could group my files into folders without any hassle.

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