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Exporting clips as a means of rendering slow motion footage?

PostPosted: Sun Jan 24, 2021 10:38 pm
by Franga
Hi there,

Just a little situation I would love some help with solving...

So the short story is that an upcoming project requires me to shoot 125fps 4k with my GH5s, which we know cannot shoot VFR material in 4k. So to get around this I will be shooting 50fps at 4k on a Ninja V to then slow down in post to 125fps using optical flow and speed warp.

I have been quite impressed with the test footage so far and believe that the render time for optical flow and speed warp is a great pay off for the quality you get. However, I am wondering that a quicker workflow might be to interpret the 50fps footage on a 25fps timeline, slow it down to 50% (maybe 25%), add the optical flow/speed warp settings, then export this to a rendered file so that I can import it and grade the footage without burning out my system.

To do this "losslessly" should I be recording in DNxHD so that I can export/reimport in DNxHD? I have been using ProRes and obviously can't export on a Windows system.

Would really appreciate any advice you can give! Looking forward to any answers :)

Re: Exporting clips as a means of rendering slow motion foot

PostPosted: Mon Jan 25, 2021 4:15 pm
by Jim Simon
I would consider ProRes, DNx and Cineform all on par with each other, used interchangeably. (With maybe a slight edge going to Cineform.)