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Input Scaling Settings for RED R3D
Hi guys,
A simple question regarding how you are handling Input Scaling parameters for RED 4K R3D files.If ‘Scale Entire Image to Fit’ it selected and Resolve scales all footage to fit comp when pushing/zooming in further for repos does Resolve reference the original 4K file or is it effectively pushing in on the already ‘scaled’ image?
Is a more prudent strategy to choose ‘Center Crop with No Resizing’ and manually resize on a shot per shot basis?All thoughts most appreciated.
Best,
j
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6 Replies
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My understanding is that Resolve will use the decoder settings (i.e. full-res, half-res, quarter-res, sixteenth res…) first and then scale using that result. So that choosing half-res and scaling up will result in lost potential quality.
However you can override the project decoder settings on a shot by shot basis, just right-click and edit RED properties and it’s a drop-down option for the individual shot… so you can just change it there if you have a shot where it becomes an issue…
If you are already working in full-res, DaVinci is supposed to do the math so that you don’t lose quality… so it shouldn’t matter Resolve scales to fit and then you scale up… I think the same goes if you have a lower-res sequence like 1080p and then set the outputs to be 2K/4K, it should give you the highest quality path…
KC
prehistoricdigital.com
hardworkingpixels.com -
Thanks Kevin I should have stipulated that we are working in a 1080P comp. Aren’t the decoder settings a separate issue? We would normally work at Half Res (to obtain real-time play back) for correction and then switch to full-res for the render. Changing to full-res from half doesn’t change the actual sizing or scaling of any of the shots?
cheers,
j
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Resolve always pulls at original resolution, so you don’t have to worry about quality loss in the situation you’re describing. If you have a 1080p timeline, it will read the 4k, resize it down to 1080 using the scaling algorithm you selected, then feed it to the color processing and output pipelines.
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Vladamir does this hold true no matter what the ‘Input Scaling’ of the comp is set to?
Best,
j
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Yes, that’s my understanding. The full file is always read, no matter what.
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Hmmmmm…..how might we go about confirming this?
best
j
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