Post format

Post Formats are a taxonomy, so you’ll want to use the Custom Taxonomies box in the widget settings.

post_format=##

To get the ID can be a little tricky. Here are two options:

Run this bit of WordPress code (Debug Bar Console is handy for this):

echo get_term_by( 'slug', 'post-format-video', 'post_format')->term_id;

Or if you have access to your database (possibly via phpMyAdmin), here’s an SQL query:

SELECT term_id from wp_terms WHERE slug = 'post-format-video';

Hello,
i have upwork wordpress test a few days ago, there is this question:
“What includes to default post format slug?”

after test, i have googling, but i haven’t found answer yet.
please help me.