MoviePy clip preview interruption problem

[AlkisPis]

If during a preview with clip.preview() the user presses [Esc] or [Q], MoviePy crashes, issuing the following error: "MoviePy error: FFPLAY encountered the following error while previewing clip: None".
Now, to my knowledge, FFPLAY never crashes by pressing these keys.
Anyway, can this be prevented in some way?

[olfMombach]

I have the same problem.

moviepy=2.1.2
ffmpeg version 2023-06-11-git-09621fd7d9-full_build-www.gyan.dev built with gcc 12.2.0 (Rev10, Built by MSYS2 project)

[olfMombach]

Possibly related: #2374

[janmarsino98]

Hi! I would like to investigate this together with #2374. I plan to reproduce it with a mocked FFplay process and distinguish a normal user-initiated process exit from a real FFplay error, keeping nonzero exits as errors. If confirmed, I will add a focused regression test. Is that scope welcome, and could I be assigned?

[janmarsino98]

I confirmed that a normal FFplay exit turns the following stdin write into a broken pipe. Draft PR #2573 stops cleanly only for return code 0, preserves nonzero errors, unblocks the audio handshake, and adds mocked regression coverage. The full local suite passes (604 passed, 7 skipped, 1 xpassed).