Either do as Dave suggests or you might want to check out
http://www.digital-heaven.co.uk/dh_dropout
which may be able to fix your faulty footage.
Cheers1
Dual 3 GHz Dual Core Intel, 4GB RAM, ATI Radeon X1900, Xserve RAID, AJA IO, 2 20" Cinema Display, FCP Studio 2 (6.0.6), OS X10.4.11