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TOPIC: Smoothing out color changes frame to frame?

Smoothing out color changes frame to frame? 29 Nov 2019 20:11 #102903

  • thewitt
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I have a video with a rotating color wheel that changes the hue every 30 seconds or so. These go from blue to red to green to yellow, and it makes the video itself very distracting and hard to watch.

The video quality is low enough to start with, and then this color change makes it really awful. I'd like to clean it up if possible.

Is there any way to make these color transitions less pronounced?

I have include a link to a short example.
Last Edit: 30 Nov 2019 05:10 by thewitt.
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Smoothing out color changes frame to frame? 30 Nov 2019 10:36 #102908

  • joema
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You can hand-keyframe color corrections while looking at the scopes, but this is very difficult and may not be very successful.

It is apparently shot by an 8-bit camera having limited dynamic range and low-light ability and using a compressed codec. The periodic near-monochromatic lighting means there is almost no color data to "pull" the image back to a consistent tone.

If the material was given to you via internet, see if you can obtain the original camera file. It may have been degraded by re-encoding.

In general I would give up on the color. It's a stage performance and viewers accept stage lighting. Try to improve other areas, such as make sure the luma waveform is optimized for each portion. Sparingly use a few color correction keyframes and it will smoothly interpolate between them. Each attempt, try to make it a little better and frequently do before/after checks to see if you're going in the right direction or making it worse.

If you draw a loose shape mask around her and slightly desaturate or lower the brightness of the background, that can provide a subtle vignette that helps a little. Note this should be subtle.

If there is video noise on the image, use video noise reduction like Neat Video: www.neatvideo.com. The Youtube video looks like there is exposure stepping; sometimes that can be reduced with Digital Anarchy Flicker Free, another expensive CPU-intensive plugin: www.digitalanarchy.com/Flicker/main.html

There is probably room to improve the audio with mild de-reverb and background noise reduction, also vocal optimization. Ideally iZotope RX7 Advanced should be used, another expensive tool: www.izotope.com/en/products/rx/features.html
Last Edit: 30 Nov 2019 10:37 by joema.
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Smoothing out color changes frame to frame? 30 Nov 2019 21:10 #102918

  • dgwvideo
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As an alternative option, consider changing the video to black and white. You will still notice luma changes but it will be much less distracting, and might be a cool look also.
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Smoothing out color changes frame to frame? 30 Nov 2019 21:15 #102919

  • thewitt
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I did that to one of them, but I have 40 or so and that would be a little monotonous (sic) I think :)
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