21.02.27 win64 hanging on large files

What is your operating system? -> Windows 10 20H2 - latest updates and patches.
RAM : 32 GB.
SSD : 1TB with 500GB free space.
Processor : Intel® Xeon® CPU W3580 @ 3.33GHz 3.33 GHz
Graphics Controller: GeForce GTX 650 Ti with NVIDIA drivers v461.72

What is your Shotcut version (see Help > About Shotcut)? Is it 32-bit? -> 21.02.27 win64

Can you repeat the problem? If so, what are the steps?

Open a large video (1.2 GB mp4 file). Scroll around. Zoom in. Press play. Shotcut hangs for minutes at a time.

Removing 21.02.27, and installing 20.04.12 win64 and behavior doesn’t happen anymore. Feels like a regression.


Or, to quote the proverbial parochial school teacher:

“It’s a mystery.”

I’m happy to put a sample file on a dropbox to see if it can be reproduced by others.


It’s not your file, and I am unable to reproduce. Changes do not always work for everyone.

Well… I’m thinking that if somebody can reproduce it might help generate proper debug logs. Or maybe I can help provide some, if told how to. I mean I can definitely work with 20.04… But if I can help fixing the issues of 21.02 and switch to “current” that would be better for me (and maybe for others)… Just trying to help.