Template:YouTube CC-BY

This video, screenshot or audio excerpt was originally uploaded on YouTube under a CC license.

Their website states: "YouTube allows users to mark their videos with a Creative Commons CC BY license."

To the uploader: You must provide a link (URL) to the original file and the authorship information if available.

This file is licensed under the Creative Commons Attribution 3.0 Unported license.

You are free:

to share – to copy, distribute and transmit the work
to remix – to adapt the work

Under the following conditions:

attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.

Template documentation[ view · edit · history · purge ]

This documentation is transcluded from Template:YouTube CC-BY/doc.

For YouTube videos with licenses that state "Creative Commons Attribution license (reuse allowed)"

The template automatically sets the following categories: Media from YouTube

Usage

Click on "Show More" in the section beneath the video (near the date and the description). Only use this template with videos listed as "Creative Commons Attribution license (reuse allowed)".
See Commons:Where is the license on various sites? #YouTube for explanation how to find licensing information on YouTube pages.
In case the license status changes in the future, add {{YouTubeReview}} to call User:LicenseReviewerBot to the page, which will verify the linked video's license.

Template parameters

Parameter text is empty

TemplateData

TemplateData is a way to store information about template parameters (the description of those and of the whole template) for both humans and machines. It is used by VisualEditor and possibly other tools like Upload Wizard.

Existing template documentation
At Wikimedia Commons, it is recommended to use {{TemplateBox}} with either ‎useTemplateData=1 or ‎useTemplateData=only on the ‎/doc subpage and transcluding it with {{Documentation}} into the template. ‎<nowiki>-tags can be wrapped around the arguments, if required, to avoid templates being expanded.

Newly created template documentation and imports
Another option, especially for imported templates, or for users with JSON experience, is placing raw ‎<templatedata>-tags into the Wikitext of the template, as described in various Wikipediae.

Discussion
There is an ongoing discussion about that matter. Feel invited to comment if you are experienced in either way, your time permits and if you like to share your opinion or to make a suggestion.

Wikipedia's help about TemplateData • Commons-specific information

For YouTube videos with licenses that state "Creative Commons Attribution license (reuse allowed)"