[Ann Bens]

Export message only shows off line clips not media pending. So you should always check your timeline.

This might help:

https://www.premiumbeat.com/blog/fix-media-pending-error-premiere-pro/?customer_ID=1&campaign_ID=shutters.22831625&launch_ID=20156225&utm_source=sstkemail&utm_medium=email&utm_campaign=MC-1373_PremiumBeat_Weekly_Blog_Newsletter_Builder_Template-2020-02-06&pl=emailcore-shutters.22831625&cr=null

[Ann Bens]

Timebase might have set to frames when you have an odd framerate

[Ann Bens]

Short answer: nope.

[Ann Bens]

Try scrolling with the mouse.

[Ann Bens]

Sometimes you need to set the sequence to Custom first before you can change a property.

But you dont need to change the sequence you can export directly to 1920×1080.

[Ann Bens]

Dont use Match Sequence settings.

Set format to H.264 and pick a matching Youtube preset to begin with.

If the filesize is too big reduce the bitrate.

[Ann Bens]

Make sure your graphics card driver is up to date.

As for Nvidia install the studio driver and not the game driver.

[Ann Bens]

Did some filming on a Iphone 12 pro max and did not like the image quality at all.

Beside I so dislike vertical video.

[Ann Bens]

Unless you are using 2017 then yes otherwise no.

You were using an internal or external drive?

[Ann Bens]

Projects and auto save dont just disappear.

Do a finder/explorer search: .prproj

As a back up make a habit is Save A Copy to another drive