I'm currently facing a pretty serious http://dict.leo.org/ende/index_de.html#/search=serious&searchLoc=0&resultOrder=basic&multi wordShowSingle=onproblem with "AErender" command line tool. I've quit a lot of projects which should be rendered via command line. Using AERenderEninge and Watch-Folders isn't a option for this job. I've done quit a lot of testing and optimizing on my projects and use the multiprocessing feature which in this case decreases rendering dramatically.
Using the same machine set-up in AE and AERenderEngine with multiprocessing I get constantly the same, fast results. But as soon as I use "aerender.exe" with command line option -mp render times increase by a least two times rendering exactly the same scene.
I tried several different settings but none of them seam to decrease rendering times to something compare able directly from within After Effects or AE Render Engine. Using the -reuse option besides a running AE Render Engine increases rendering times too no matter which option I use (and it doesn't make sense to have a UI-based AE running side by side with aerender).
I'm using aerender version 11.0.4x2 on Windows 7. Command line options I've tried: -mp, -mem_usage, -reuse. Any hint would be greatly appreciated.
Here's a followup...
This is what I do... I have a base scene, in this scene I have several expression (...) scaling Images (only fit within comp). Those base scenes are used with other images.
Really strange in my opinion, maybe the downside of MP? Only solution open/save a project?
Update: deactivating expressions doesn't help at all, you have to open / save as soon as anything changes. Seams like AE or AERenderEngine (UI) update before rendering, "aerender.exe" doesn't do that...