Video forward to whats App running in Fast forward mode

[AC Question]

Hi

I am using Moto G with Android Version 5.1
When ever I am forwarding any video to my whats App Contact it is running in fast forward mode in there handset. Sound is playing ok but video is running in fast forward mode. Every thing is working fine on my handset

This problem is with videos I have shot. I am not facing this issue with videos I download or getting from someone else.

Please help me in this matter