Did exactly the same thing for a project couple of weeks ago.
I opened the HDV Mpeg2 files with Qicktime (wich took about 5min to open) and then exported it to DVCPROHD, altered the with to 1920 instead of 1440, and let QT do it
Thanks for your help, sounds easy 🙂
Now when we capture some of the content with the 720p60 capture setting to disk and import that into a 720p25 project would that give us slomo, since the cam records always 60p.