First project using Quicktime exported footage and glitching

[Lily22785501sn1g]

I got a new MBP 16 inch M1 Pro laptop with 16GB and first project is glitching.  I import Quicktime exported footage (Screen capture) and the video glitches terribly (pixelation etc).  I actually can't use it.  I downloaded the Beta version hoping that would fix it but still doesn't work.  Any ideas?  Note I've checked the original and it is fine. 

[JohnColombo]

Hi @Lily22785501sn1g,

Thank you for reporting this issue. Would you be able to share the glitching footage with us? Alternatively, what application did you use to create the captured Quicktime file?

Thanks again for reporting, and for any further information,

- John, After Effects Engineering Team