# Test thread — to test things out. Do not lock! **URL:** \ **Category:** About This Message Board\ **Created:** [December 27, 2021, 6:05pm UTC](https://boards.straightdope.com/t/test-thread-to-test-things-out-do-not-lock/956736 "2021-12-27T18:05:07Z")\ **Posts on this page:** 1\ **Showing post:** 502
**Author:** ![engineer\_comp\_geek](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/engineer_comp_geek/32/504_2.png) [@engineer\_comp\_geek](https://boards.straightdope.com/u/engineer_comp_geek)\ **Post date:** [February 10, 2024, 5:08am UTC](https://boards.straightdope.com/t/test-thread-to-test-things-out-do-not-lock/956736/502 "2024-02-10T05:08:46Z")
> [@EllisDee](#): > > Discourse won’t let you, but it only knows if you’re posting a video if it has time to generate a preview of the post It’s actually a bug in Discourse. It used to work properly, until it didn’t. We are not a hosting site, so we don’t allow you to embed pictures, videos, etc. in threads. You have to host the pictures, videos, etc. elsewhere and link to them. At some point, Discourse managed to futz itself up and started treating the OneBox preview THAT DISCOURSE ITSELF MAKES as a user-posted image or video. So that’s why there’s a race. If you can post before it makes the preview, then it won’t block you. But if you are too slow, then it does block you. There is a lengthy discussion in Site Feedback here: > [@Have links to YouTube been disabled?](https://boards.straightdope.com/t/have-links-to-youtube-been-disabled/981958): > > I just tried posting a couple of YouTube links in and got the message An error occurred: Sorry, you can’t embed media items in a post. What’s going on? We have asked the Discourse folks to fix it. So far, they haven’t. --- _[View the full topic](https://boards.straightdope.com/t/test-thread-to-test-things-out-do-not-lock/956736)._