Çamarchepas wrote:
I am using OBS to record my video which create a 4k mp4 file. Could that be the cause of the crashing? It used to work flawlessly but since last week it doesn’t. I am thinking this might be at the roots of the problem. What’s your take on that?
It's possible. Doing a test with a new library and using some videos from other origins may help confirm that suspicion.
I seem to remember a while ago someone else having problems also with OBS recorded videos.
You can try converting these videos prior to importing: you could use the Finder (control-click, Services->Encode Selected Video Files), or HandBrake, for example.
If the converted videos show no problem, then it is almost certainly something in the way the videos are encoded by OBS.
I am not very familiar with OBS; there may be some settings you change that produce a recording that is more palatable to FCP.
That would be a better way going forward, if possible.