What is your operating system?
Windows 11
What is your Shotcut version (see Help > About Shotcut)? Is it 32-bit?
22.04 and 22.05.23
Can you repeat the problem? If so, what are the steps?
(Please be specific and use the names as seen in Shotcut, preferably English. Include a screenshot or screen recording if you can. Also, you can attach logs from either View > Application Log or right-click a job and choose View Log.)
I have created a video, here: shotcut CPU usage problem - YouTube
The video shows it sitting on the ‘convert to edit-friendly’ screen prompt that you get after inserting some variable rate footage onto the timeline. I previously recorded as section of the video I was originally editing with Flashback Express, converted it to MP4 and imported it. It prompts to convert to edit-friendly, and I chose ‘best’ quality, but after that Shotcut was extremely slow indeed, painfully so, with very high CPU usage but no disk activity to speak of and still only using a small proportion of the available 16GB. I tried updating from 22.04 to the latest available ready-compiled version, 22.05.23, and even tried resetting the settings in the registry when I installed it. It didn’t make a difference. Then when I added the extra section of MP4 from Flashback Express that was 22 minutes long, it completely ground to a halt. It took 10 minutes at least for the prompt screen to convert it to an edit-friendly format to come up, and I was not able to actually select a higher quality than the default. A single thread maxxed out again but no disk activity to speak of and still plenty of memory left.
It was as if, even after having converted the previous variable rate footage to an edit-friendly format, it was still demanding a lot of CPU time on it, but it was at least still usable, just. However, when I added the new footage from Flashback Express, that was about 22 minutes, it was just unable to pull itself away from whatever it was doing to do anything else. Just to point out, i’ve got proxy file resolution set to 360p.
Shotcut CPU problem.txt (60.9 KB)
How to sync sound.mlt (27.6 KB)
I hope this information is useful. I’m a bit surprised no-one else has had anything similar. Please let me know if there’s anything I should be checking for.
Regards,
Mike Hersee