Transcoding archival footage

Hi all,

I recently took over a project that is very archival footage heavy. Unfortunately, the previous editor used incorrect settings when converting the footage from the DVD screener to a quicktime file for import into FCP. The incorrect footage is currently at DVCPRO HD 720p60 960x720 (which are the actual project settings). I believe the footage should be DV DVCPRO/NTSC 720x480, so as to avoid distortion (I'm not concerned about pillarboxing). I've corrected some of the footage by going back to the screeners themselves, but does anybody know if there is a way to transcode the 720p60 960x720 quicktime files to DV DVCPRO/NTSC 720x480? If I can do this with the files that have already been created from the screeners, that might be helpful in saving me a step. I hope what I'm asking is clear.

Thanks,
Matt