How to compress a dpg movie?

Can anyone teach me on how to compress a DPG Movie? Thanks

...Why how big is the movie in question?

I use DPG Tools which works well I've found. All I tried is around 700mb films though

DPGTool is a converter, and DPG videos are already compressed. You won't be saving much space by compressing further.

compress? or convert ?
If convert use dpg tools
If compress, then it is already at a very low size, I mean 700 MB movie becomes 550 mb while converting, and if you don't have enough space in your memory card then get a big one.

550MB is a pretty damn high filesize for a DPG movie. No need to go overboard on the conversion settings.

Its small for me, I got an 8gb sdhc card

Thanks for the help