We're looking into this now and believe it to be a false-positive from ClamAV.
The virus described is a system level trojan which tricks you into manually downloading malware, which really isn't possible from plugin on a site (it would have to exist and run on your local PC), and the file has not been changed since 3.9.6 was released (at which time it was clean). Meanwhile, the file itself is simply a display fix for responsive videos on a few select themes.
In addition, responsive-videos.js (the source from which responsive-videos.min.js is minified) is not listed as infected.
The false-positive has been reported to ClamAV (the source of the majority of the reports we've received, VirusTotal doesn't disclose who they use), and we're hoping for a quick resolution.
From what we can tell so far, there is no cause for concern.