Premiere pro is very slow

[Elvis de Mier]

premiere latest version 

on a mac - catalina

Premiere is not  recognizing  some very normal codecs. It stutters... and the problem begins when i use more layers.

I reinstalled premiere 

reinstalled catalina

I think it has something to do with quicktime bu i am not sure. I would like to reinstall quicktime. But that seems to be impossible. Mac wont let me do that!

...any further suggestions?

gr Miel

[RjL190365]

The problem is that Apple had completely ended support of all QuickTime 7-era codecs several years ago. And it's not just Premiere Pro that must end all support for the codecs that your content uses; everybody must also discontinue support for them. These codecs are NOT 64-bit compliant at all. They are strictly 32-bit codecs.

You can try transcoding (with the few third-party software programs that remain that still support those codecs) to a more supported codec, then import those transcodes into Premiere Pro.

Those codecs thay you deem "normal" are now deemed "obsolete" by the entire tech industry.

[Elvis de Mier]

hmmm! thanks anyway.