Cannot open m4v/mpeg4 video on a PNY thumb drive using Yosemite on new iMac desktop?
Video on PNY thumb drive does not open and gives message: QuickTime Player can't open "2014-01-09 08_25_32.m4v". How do I open this?
iMac (21.5-inch, Late 2012), OS X Mavericks (10.9.3), rck
