I'd like to find the most convenient way to do the following.
I have many comps of about 5300x1080 (approx)
I need to render them out, each into three videos of 1920x1080. They will be played by three side by side projectors using a watchout system.
Is there a way to do this in one render step out of after effects into 3 wmv files?
WMV export seems unavailable in the render queue, and only in the export file-export. However, in this way, there is no cropping option.
Instead of using Crop on output, you could create a series of 1920x1080 compositions, one for each Watchout display, each of which contains only your main 5300x1080 comp, repositioned to re-create the crops.
However, I recommend against going directly to WMV from After Effects. AE is incapable of multi-pass compression, which creates cleaner output. I always render to a lossless format and then handle compression in a third-party application.
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