What metadata can be stored in a .dv file?
you can check http://www.videohelp.com/tools/DV_Datecode and http://www.avpreserve.com/dvanalyzer/dv-metadata/
the rest is on google :)

i was using an automated software developed in house to extract the info, later on we moved to FinalCutServer so we get to manage everything in there...

edit: this link could help you. http://premierepro.wikia.com/wiki/DVMP