Broken image and CSS links after moving to new host

I followed the instructions to migrate Channels to a new host, but after the move I am getting 404 errors for uploaded images and, oddly, a CSS file. The app is looking for /dvr/uploads/ but the directory does not appear to exist.

Is there a way to recover from this, or am I toast and need to manually re-add the images...?

Here is a snippet of the browser console showing the errors:

What steps did you take