Send Response Header Based On MIME

[oleversion2]

I want to send a "Content-Disposition: attachment" response header if the file is a video; if it has a MIME of video/*. I can't see to find the appropriate Apache directive (using Apache 2.0.33) for this.

This directive:

Header set "Content-Disposition" "attachment"

Sends the header fine but what can I use for the conditionality? <FileMatch> would work but isn't particularly nice.