The class was started by Gonzalo explaining the importance of regrain in your plate and how to work with them. We saw 3 different alternatives. The first one was to use the minus the original plate and the denoise. The second way is to use a regrain node. The third way was to use a new gizmo and this was now the standard in the industry, it’s called DasGrain.
Patching was the next thing we learnt. We had learnt how to fix the patch and cover them up, but it was on a balanced light this class was about how to cover them up with uneven lighting. We saw different ways to tackle it. High and low-frequency, image frequency separation help to preserve details and later reuse the details during cleaning. To get the low frequency we use blur and to get the high frequency we use from, then use plus to marge them.
The next method was similar, but this time we used the divide and multiply, we use only one roto paint and we can use the blur to control the light.
The final method was to track the point you want to patch, then use blur for the premult and the patch and then divide them, and then multiply with the patch. Later grain the back and over it with the plate. This way the patch will move with the track and the light will move with it.
The curve tool helps to match fluctuating colours or remove a fluctuation, what I mean by fluctuation is any kind of light. How this tool works is, first to select the region to match, this could be the whole frame or a part by rotoing it. Then hit the ‘GO” button to analyse the range. Next copy the Maximum and Minimum Luminescence Pixel Value and paste it into the Grade lift and gain. Then added Grade to the plate which has to match the light.
The next way we saw how to clean up the patch was easier and quicker. First roto around the marker, then transform and move the plate a little bit so you can hide the marker. Tack the point and past the value to the roto. Oremult and merge over the original plate.
The next method is the same as the before one, but in this, we use roto paint to do the patchwork and roto around the marker we need an alpha to cut out the region with which we cloned.
InPaint is the best way to work on patch removal. First roto the area you want to patch and track it. Matte to InPanit and make sure it is on Matte Aplha then adjust the setting. Added the grain to the patch, copy the alpha of the patch to the alpha of the regrain and premult.
Before going to the motion vector, we saw the Expression node and how to use it and learnt more about UV.
The Smart Vector node calculates all the pixels which have moved and produces a video which later can be tracked in Vector Distort. The Vector Distort has different output options the default is Wasrped Src, this potion is too heavy and might slow the project. Next, the St-Map option is lighter than Wasrped Src.