I’m running into some major issues with trying to render a small 2 minute clip. It’s of a man staring at a burning house, except the “house on fire” is really just his glasses roto’ed out and overlayed with a small model house and a couple of clips of fire from Production crate.
Looks decent but Resolve absolutely refuses to render it crashing at random points during the render. Doesn’t matter iff I render in 4K, 1080p, or even 720p, it’ll crash at different places unrelated to the resolution I pick.
If it doesn’t crash it will show a different kind of weird behavior in that it will be rendering on the eGPU and seem to be moving along fine when suddenly all activity on the eGPU stops and the CPU cores max out and resolve stops responding. Also weird at this point is that the fans do not kick in as they usually do when the CPU cores max out on a heavy task so while the activity monitor appears to show the cores maxed out, it also doesn’t appear like they’re doing anything. The system remains responsive and I can even fire up and run Lightroom no problem. Although the cores are all maxed resolve rendering appears to be frozen at whatever percentage it was at when this starts.
The fires, the middle house and the man are all 4K. The man and the model house were shot on a BMPCC4K in braw 3:1.
There are 4 clips with effects, the heaviest of which is MochaPro doing the root and tracking of his eyeglasses, while one clip has MochaPro stabilizing the dolly push in which had a few bumps. The other 3 clips are on a tripod with just his head moving a bit back and forth naturally.
The system is a 2017 iMac 5K w/4.2GHz Quad-Core i7. 64GB RAM, internal Radeon Pro 580 and external via thunderbolt Vega 64 house in an Akitio Node Pro. All software and plugins are the very latest versions.
One last bit of weirdness is that when tracking the eyeglass in a couple of clips, MochaPro would run along fine for a bit and then suddenly start to max out the system memory. I’d have to force quit everything and start again. I was able to get it to complete the tracking after a few times of doing this and memory was maxed out threatening to freeze everything as I did it.
Images showing activity monitor during rot and during render. Note normal render shows Vega 64 GPU high usage and low CPU usage. https://imgur.com/a/dqjWhS9
When rendering correctly and making slow (<0.5 fps) but steady progress CPU/GPU usage looks like this: https://imgur.com/HUJAzO9
Any insight or help would be much appreciated thanks!