The rendered walkthru nelson speaks of would take several weeks to render on 1 PC. REVIT 2009-2010 would actually do it much fasted but at a lesser quality.
Here's how you do the math. Render one frame of an average view (ie: average amount of lights visible) (Interior lighting scenes are a KLLER). Lets say you have a top notch PC and it takes 30 minutes to render one average frame. Multiply that times 800. That's your rendering time which is 16 days.
I have not used the Render Cloud server farm option but it sounds awesome if it's real. Didn't know it existed beyond paying big $$$ for an outsourced service.
Another inhouse option is to have multiple computers * all aetup with the same render options * each render so many seconds (frames) of the entire walkthru. When you setup the animation export you can specify which frames to render. Then piece them together after the fact with Microsoft Movie maker etc. . .
Cut the render time by 5 times if you have 5 computers all rendering all night long.
To prevent PC lockups during rendering keep the rendering time lengths short so you don't loose a bunch of time if something goes wrong.
As an example, break the 60 second rendered annimated walkthru down into 12 - 5 seconds segments. So each rendering process would have approx. 66 frames (800 / 12) or 66 - 30 minute renderings or 33 hours to render 1/12th of the video. So under these conditions if you had 12 computers all rendering at the same time it would take 33 hours to complete.
Then you just splice the videos together and jazz it up as required.
Another tip is to reboot between large rendered annimation exports. This really help with speed and lockups.
I'll be looking into this 'cloud rendering server farm' myself in the mean time . . . .
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