[Moses Shoyoye]

Below is the video link of part of the clips that have ‘steppings’:
https://www.youtube.com/watch?v=1EKdlDPlYzQ&feature=youtu.be

I have watch several time to figure out what precisely is the stepping but just couldnt.

Plus, here is also a screenshot png picture of my sequence setting
The clip Image Size: 1920 x 1080
Type: MXF
Frame Rate: 25,00
Source Audio Format: 48000 Hz – 24 bit – Stereo
Project Audio Format: 48000 Hz – 32 bit floating point – Stereo
Pixel Aspect Ratio: 1,0

Detail explanation to help me sort this out would be a lot much appreciated

Thank you for the trouble.
Moses