It functions correctly but there is one slight annoyance that I personally have with it.
When a thread automatically updates (using the 4chan x script), and extra block quotes are added, the script isn't dynamic enough to sense this and add another embed.
Are you able to make it add the embed after the thread is automatically updated using other scripts?
Sadly, "Comment too long. Click "here" to view the full text." is broken when used.
Out of the handful of scripts I use browsing 4chan, this is by far the most handy. No more annoying copy and paste, and best of all, no more stupid rickrolls.
It's very convenient to have videos embedded in the thread.