Quicktime error when combining 2 videos

Have 2 one-minute videos that I have recorded using my iphone. Am trying to combine it to a single video using the option File-Export As , but am getting the error "Operation Stopped The operation is not supported for this media."

This was working perfectly till a week ago. The help search has not been successful. To reiterate these are my own videos so there is no issue of copyright issues.

TIA

MacBook Pro 13″, macOS 10.15

Posted on Dec 14, 2020 7:55 PM

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Quicktime error when combining 2 videos

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