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Rendering and re-rendering Quicktimes
Hi,
I need to render a 6 min animation as uncompressed, 10 bit, 4:2:2 (Blackmagic), QuickTime -
3 Replies
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It’s going to be tranferred to digibeta (PAL).
4:2:2 10 bit uncompressed quicktime is what the transfer house have asked for.
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Some things come to mind: Have you done a test, comparing a 10-bit render (in a 16-bit project) with an 8-bit render? If the difference is negligible, and you have a dual-processor machine, you might want to consider rendering to a TGA sequence using AE’s multi-machine settings with two instances of AE. Search the archives on “instances” if you need more info. This technique can often speed up rendering by having the two processors leapfrog the rendering of frames. Another option is to buy Nucleo from Gridiron.
Or, if there is no difference, you could render to the Animation codec, then re-render to the 10-bit BM codec. AFAIK, Animation only renders in 8-bit.
However, if there is a difference, and you have soft gradients that only look good in 10-bit, and you still want to splice 6 renders, you could try (test first) splicing the 10-bit renders together in Quicktime Pro, by opening the first movie, placing the cursor at the end, then dragging the second movie onto the first .. all in QT Player. When you’ve dragged them all, save the new long movie as a self-contained QT movie. If I recall, this should just splice them together with no recompression.
Or, if you have FCP or another NLE, you could make a 10-bit BM sequence, drop the movies onto that (there should be no rendering required) then make a self-contained movie using the “current settings”, which should also just splice the clips.
If you have to use AE to bring them all together, it will recompress the clips, but the BM 10-bit codec is pretty good for that — you should see almost no degradation, but you should do a quick test.
By the way, to do recompression tests, consider dragging the original and the recompressed version into a comp and set the mode of the upper layer (whichever that is) to “difference” to see if there’s any, well, difference. Run the mouse over the frame and check the info panel for variances if you’re really anal. In the end, let your eye decide.
Hope that helps,
Steve -
That’s great – thanks for the advice. Really appreciated
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