Viewing in on my phone is fine.  I downloaded the same video from the sd card onto my computer and it pauses and jumps.  Can anyone help with this?  I don't think it is my computer it is my work computer that is beefed up to run 3D modeling programs.  Oh yeah and I have a P3S

What are your camera settings

You tube us a sample. I have the same issue.  Will post video tomorrow. Well mine doesnt look that bad after i converted it and put it ion youtube.....the original 4k video was far worse.

Image Size - 4:3
Image Format - RAW
White Balance - AWB
Style - None
Color - D-Log

Video Size - 2.7k/24
Video Format - MOV
NTSC/PAL - PAL
White Balance - AWB
Style - None
Color - D-Log

Histogram - Off
Video Caption - Off
Over Exposure Warning - Off
Grid - None
Anti Flicker - Auto

Well it runs pretty smooth on youtube but the image quality is not even close on the original file.
<iframe width="560" height="315" src="https://www.youtube.com/embed/h3WbRJquiVg" frameborder="0" allowfullscreen></iframe>