Conversion results in Huge File. Help needed NERO

I have nero 2018 Platinum. 

I'm converting lots of *.mov files into digital but the settings I've used give a huge (32gb) file for just 2 hrs of video.   I plan to watch these on computer and HD TV.  Whats the best way to do this to get a good video result but lower GB.  Just a mum making home movies.  I've burned to DVD before but now just want to keep all the content digitally but everything I try results in a huge file.  (Novice user)  

Thanks