Colour Correction

 

Project was to improve the colour quality of original recordings of The Magic Roundabout. The videos were taken from YouTube, using whatever their initial quality was as their baseline to improve from there.

The two clips had various issues surrounding them, which I will summarize below and explain how I resolved this in the processed clip.

Clip 1: “The Magic Roundabout – The Experiment”

Overall this was the cleaner of the two clips and required less work to accomplish the final result.

The original clip is on the left, with the corrected image on the right in the video, allowing me to show the two clips colour displays side-by-side.

The original is slightly over exposed to red (giving a slight warm looking tone to whites), as well as the clip being under saturated overall (seen by the white colour coming through on the original scope).

The corrected version has clearly defined RGB colours, as well as being re-balanced to show more of the blue colour of the sky, as well as the whites being cleaner when compared to the original. The slight downside of this correction is that the adjusted clip now does come out slightly darker, however increasing the brightness much further is not advised at this point as you’ll push the colours over the 100 IRE intensity, which would not comply with broadcast standards.

As you can see from the video, the yellow tone to the white has been removed, the blue has returned to the sky, all while keeping the rest of the clip looking cleaner overall by removing recording distortion from the bottom of the original also.

Clip 2: “THE MAGIC ROUNDABOUT – ORIGINAL BBC 1970s EPISODE”

By comparison, this clip had significantly more problems. Firstly, there was a very noticeable green tint to the clip, possibly from a poor original recording before it was placed online. Coupled with this the overall saturation, brightness and contrast were poor.

You can see this most clearly on the original clips waveform (left in image below), which shows the most intense colour being the green, over everything else. This is also possibly down to the quality of the original recording; however, this can be solved to a certain degree.

The overall temperature of the clip is changed in the white balance settings, to enhance the blue intensity over the green. This allows the green and red to stay almost the same as the original to try and maintain overall colour levels and depth.

The next change is a significant adjustment to the colour tones for the clip, improving contrast, highlights and shadows to provide a look closer to that of what would have been originally broadcast.

Finally, on the RGB curves, the blue curve is intensified slightly on high tones and reduced slightly on shadows. The biggest change is the white, which has an anchor point on the mid tones and is curved to improve overall brightness of the clip.

Chris

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