premiere pro pixelize?

[zenjpn]

I'm using premiere pro on iMac and sometimes I get this pixelized look.

Clips are MOV file that I shoot on iPhone. 

Rendering is set as GPU Metal. 

It only appears in an exported video so I cannot tell until I wait for the export process. 

I have no idea where to look to fix this error so hopefully, any of you has a knowlege about this. 

Thank you for your help. 

[Michael Grenadier]

iphone footage is usually variable frame rate which can cause these sort of problems.  

use mediainfo to determine whether your source is variable or constant frame rate

https://mediaarea.net/en/MediaInfo/Download

if it's variable use handbrake to convert to constant frame rate

https://handbrake.fr
and here's a tutorial on how to use handbrake

https://www.youtube.com/watch?time_continue=34&v=xlvxgVREX-Y

[zenjpn]

@Michael Grenadier 

thank you for your prompt reply!

I will check those tutorials and see if the problem will go away.

Thank you. 

[zenjpn]

It's been a while since I got this answer and it worked to me.

thabk you for your support!