Now, I myself don't like .mp4 video files just because they new stuff and shit like that.
There comes a time when things move elsewhere from youtube.
Problem is that it's hard to download/convert due to the corporate wall.

However, it's not as bad as youtube's tamper policy.
Attempting a youtube download/conversion is such a hollow victory, you know?
It's tune in and hook your mouth on the fishing line, or you're outta here!
R.I.P.

These instructions are of some time, but maybe, it's still useful to you?
Here are the cited references!

VVV
that new vimeo video host eat a dick!
well, here's the workaround.
call it, the new page source searching for the new web object-page of the future!

+++
https://mpsocial.com/t/downloading-private-vimeo-videos/21450/3
bwbalazs
1
Jul '17
I prefer to do these things in Chrome but it works in every other browsers which have developer tools.

So navigate to the page where there is the video embedded.
***Open Developer tools (Ctrl + shift + i; or on Windows it’s F12)
***Choose Elements tab.
***Press the first button which contains a cursor (“Select an element in the page to inspect it”) and click on the video itself.
***This will select the video element or the thumbnail image from the HTML (DOM) code in the Developer tools.
Scroll down a little and just a few lines below the video parts you will find a script tag. Copy its content to a text editor.
You can easily find the mp4 video URL with text search in your text editor.
I hope it helps and understandable. I can use words which is not clear for non-programmer people. :smiley:

Edit: if it’s not clear, I will make a tutorial tomorrow with photos.
Edit 2: I will make then because it wasn’t totally clear and it can be useful for anyone.

+++
https://www.quora.com/How-can-I-download-an-embedded-private-Vimeo-video
pdate for 03/2020

Go to the Vimeo video page
Open Developer Tools
***Search for config_url
***Copy the entire value for config_url starting with https
***Paste the string in a text editor, and update all the double slashes that look like \/ and replace them with just a single /
Paste the updated string into your web browser
***Search for the text: mp4 and use that url to download the format of your choice
^^^

Here are the steps:
1. With Google Chrome, activate Developer Tools
2. Choose the Elements tab of the Developer Tools interface.
3. Select the Element Selector button, which is the button with the cursor icon (two buttons left from the Elements tab).
4. Select the vimeo video object.
5. If you got it right, your 'Ctrl + F' search keyboard command should activate a search form/bar function of the Developer Tools interface.
6. Within the search form, type in 'config'
7. With your 'Ctrl + G' search next text input keyboard command, you should find a result ending in "var config".
8. Select and 'Ctrl + C' copy keyboard command the script of the vimeo video object.
9. With a text editor, 'Ctrl + P' paste keyboard command the script.
10. 'Ctrl + F' and 'Ctrl + G' for "mp4"
11. You should be able to find the .mp4 url links, but the size dimension of the video screening is up to you to pick.
12. Good luck with whatevers, I dunno.