iMovie has become very slow rendering, has anyone else experienced that?
I render/create a one hour video every week, it normally takes about 30 min. it's now taking literally 4-5 hours.
OS12.6 on 2016 MBP iMovie 10.3.4
MacBook Pro 15″, macOS 10.13
Try resetting the System Management Controller. It's different than PRAM. Resetting the SMC can cure abnormally slow performance. it doesn't work on a silicon chip M1 mac, though.
The instructions are in this link:
Reset the SMC of your Mac - Apple Support
-- Rich
Could be not enough application disk space or maybe you are exporting at the Best Quality (pro res) setting that produces a 4x larger file and takes much longer to render.
Sometimes rebooting will clear things up.
Could also be that you need to reset your System Management Controller, that is a matter of booting up while holding down certain keys. I don’t have the instructional link handy at the moment but I can post back with it if you need it.
— Rich
Yeah, I’m exporting at 720 the same way I always do, nothing different. Exporting to an SSD, again, same as I’ve been doing for the last couple years every week. I haven’t changed anything just for whatever reason last weekend things got super slow.
Well, I figured this out myself... really strange... I had a 524k .png watermark on the movie, I removed that and everything worked with normal rendering time. Seems strange to me that a small graphic would create havoc like this, but so be it, problem solved.
that I have also reset my Pram a couple times
Think about it, that watermark is going on every single video frame of your project.
you might try another file format for the watermark to see if that may help.
Thanks, I simply reduced it’s size and it made a dramatic difference
I hadn’t seen your last post before posting mine about resetting the SMC.
What an unusual solution. Yeah, who would have thought that a watermark would have caused the problem.
— Rich
iMovie has become very slow rendering.
