Your aquision frame rate needs to be the same as your delivery framerate. Framerate conversion is always a compromise.
If you keep duration unchanged then you have to lose frames so either fluid motion or blending. With little motion blending would be ok.
Pat Horridge
Broadcast & Post Consultant, Trainer, Avid Certified Instructor
Free online Tutorials at VET digital media academy online https://vimeo.com/channels/752951
pat@vet.co.uk