NASA JPL releases onboard video of Mars Descent and Landing (youtube.com)

Love it!

If they did, this isn't that video.

This is a panoramic video recorded by the already-landed Perseverance rover, not video of its descent and landing.

The descent and landing can be seen here: https://www.youtube.com/watch?v=4czjS9h4Fpg

Better to look here: https://news.ycombinator.com/item?id=26229358