Memory leak when exporting + A couple UX bugs

[FrenchMajesty]

Description

I was trying to evaluate Cap but was unsuccessful in my first record attempt.

Reproduction

The steps exact I followed and what I saw:

• Started my recording. Shot a 24sec video (~12Mb)
• Tried to "save" it via the little popup window
• It successfully exported the video.
• However, for some reason, my video was clipped. It was 14sec long and cut-off halfway through me talking
• I then attempted to re-export the full length video by going to "Edit" and export from there
• The first export attempt showed me the "Exporting" modal with a progress bar, but it never progressed. It was stuck at 0 until one point it just jumped to "Export completed".
• When I clicked on the button "Show me in finder" it did not react or do anything
• Upon inspecting the target folder, I saw the video was never actually exported
• Went back, hit "cancel" in the popup and re-clicked "Export"
• The same Exporting modal appear, but this time it progressed. Haha!
• But then, my computer froze... :( MacOS warned me that Cap was eating all my memory and I had to force-quit it.

Additional Context

• Cap version: beta5.4
• Operating system, version: macOS 14.1.1
• Device (optional): MBP M1 Pro

I looked but could not find the logs at the given location.

[richiemcilroy]

Thank you so much! We are currently working on the memory leak which seems to happen on some devices. Fix for this is in progress 🙏