I tried to load an mp4 file into Krita and it gives me an error for Krita not recognizing the file, which I understand, but I close the dialog box and it reappears after 1 or 2 seconds. Even after being fast to delete the layer with the mp4 file before the window comes up again, it still happens with no mp4 file in Krita, so it seems like the only way to get rid of it coming up is to close Krita and reopen it, and then it's gone. Is this a bug?

Yes that is a bug. I notice from your linked image that krita is trying to load something (load progress bar showing at the bottom of the window) which it shouldn't even try to do in that situation. I've just done some quick experiments that show a range of problems in the area of trying to 'load' things that you shoudn't.

Please raise a formal bug report at https://bugs.kde.org/ (It has an account set-up requirement and bug reporting is a fun and interesting activity.)

Remember to give details like which OS and krita version you are using and what was the exact method you used to try to 'load' the .mp4 file.

ahabgreybeard wrote:I notice from your linked image that krita is trying to load something (load progress bar showing at the bottom of the window) which it shouldn't even try to do in that situation.

Yeah I also noticed that. I guess I should report both things, then. I don't know how I triggered the progress bar thing to happen though.

The progress bar thing seems to be an aspect of the same bug: krita trying to load something it can't or shouldn't do and then getting stuck. A formal bug report is the best way to draw something to the attention of the developers and they are very good at responding to bug reports (and fixing bugs).

Please put a link to any bug report you make in a reply to this topic so that people can follow its progress and possibly add to it if they've found problems in the same area.