Display loading gif while lengthy function is running in parallel.

[BigBen]

I have a loading gif named loading.gif.
I want to display this gif in a label using QMovie, while a function named extractMeta() that takes some time to execute is running in parallel. Then I want this gif to disappear as soon as the extraxtMeta() function completed execution.
How can I do so?
I have read that QConcurrent might be a possible solution, but I am having trouble understanding how to implement this.

[J.Hilk]

hi @BigBen

thats only possible, as long as your long running function does not modify Ui-elements

but yes, QtConcurrent is one of the possible options to use

let me link you to my git repo
https://github.com/DeiVadder/QtThreadExample

that covers all (Qt) ways of parallelisation, and should give you a good starting point