What's the best output format for archiving my projects?

I am using dpsVelocity 8.2 (no HD and no 3D card) for editing videos at my church. I output as MPEG2 with some standard compression to reduce the file size for display through our projectors. But for long term storage I would prefer a file that isn't any further compressed than the 5 MB/S that it drops down to during capturing.

Is there a native file format that I could output to, delete the captured footage from the media drive, and then years later drop that file back into dpsVelocity and it would be editable and high quality just like the original project? I understand that I would not have any of the extra captured footage ... I'm talking just the stuff that made it into the final video.

Thanks!