In the past, we've been able to get codecs for DivX/XviD/MPEG4 and support for containers like AVI, MKV in Mac OS X's Quick Look feature using Perian (as per this question). As noted on the Perian ...
Typing $ qlmanage -m plugins will give me a list of QuickLook plugins and their associated MIME type (at least I think it's a MIME type): plugins: org.openxmlformats.presentationml.slideshow -> ...
Trying to find reliable info on working quicklook plugins for Mountain Lion. I'd like to at least find working ones for colour code syntax highlight in source code previews, and preview plain text ...