Hi JBezug.
I was having a very similar issue as well. Hundreds of photos and videos from an accidentally-formatted microSD card that I hadn't touched in several years were recovered by Recuva albeit in an unopenable state.
The response to the OP in this thread by one of the CCleaner devs explains why they might not be recoverable. Basically, he says that while the entries/filenames still exist on the device's file table, the actual data that it points to might have been wiped and Recuva would not have knowledge of this beforehand. I have done some research of my own and it looks like there are tools such as the ones linked to here that might be worth a shot at repairing these files. I have found that 99 times out of 100, VLC cannot play these files either but occasionally there is the odd broken file that works. I haven't tried IrfanView. Note however that the documentation for Recuva is quite old (as evident by the references to Windows 8) so there might be even better alternatives for repairing these broken files out there.
