Lightroom cannot read the video file

[Home1Run]

I have a MacBook Pro, running macOS Big Sur version 11.1, running Lightroon Classic 10.11.1 Release, and when I try to import a MP4 file (recorded on my new Canon RP), I get the following message.  I can play the MP4 files on my Mac with no problems.  Why is LR not reading this file?

[johnrellis]

Upload a sample video to Dropbox or similar and post the sharing link here. We can see if it imports into other LR installations and examine its format and codec in detail.

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[Home1Run]

https://www.dropbox.com/s/gmtakt498bviedi/MVI_0514.MP4?dl=0

here is one....

[johnrellis]

Hmm, I was able to import that video with no error message into my LR 10.1.1 on Mac OS 10.15.7, Mac OS 11.1, and Windows 10. 

Two initial troubleshooting steps:

- Triple-check you're on LR 10.1.1 by doing the LR menu command Help > System Info. (Sometimes Creative Cloud fools you into thinking you've installed the "latest".)

- Restart your computer and try again.

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[Home1Run]

Thanks for your reply.  I checked again..I'm running LT Classic version: 10.1.1.  I tried to import the MP4 into a new catalog.  It worked once.  Then it wouldn't work.

 I don't understnad the meesage about "unsupported compression type".  It's a standrd MP4 file.

Anything else I can try?

[johnrellis]

""unsupported compression type".  It's a standrd MP4 file."

MP4 H.264 is a fairly complicated standard with lots of options, and not all codecs implement all the options. 

I don't have any other suggestions. LR's implementation of video isn't very robust, with a steady stream of problems reported since it was first introduced in LR 4.

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