FCP won't import .mp4 files

Terry Brown wrote:

I used a different web browser and tried again. Now the files are compatible. 🤷🏽‍♂️

Most likely the initial download was corrupted, or unfinished; or the browser served you a different version of the files (webp perhaps?) that is not supported by Quicktime.

Does the file open in the QuickTime Player? If so post a screenshot of what it shows in the expanded information window.

Use Handbrake to convert it. Please report what codec is being used. Handbrake should shoe you.

I assume that means everything is now functioning correctly.

I have had weird effects with browsers . . . usually Safari!

A few months ago I was on the MotionFX website trying to download a free LUT app.

The download button did nothing but take me round in circles. I tried off and on for about a week and then decided to give Brave browser a try.

In seconds I had the downloaded file on my Mac. Safari was still refusing to download it.

Where did these files originally come from?

Yeah, Safari is so not compatible with so many web site. I often switch to FireFox to get web sites to work and download correctly.