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To make things even more complicated, some digital camcorders have something you could call "color interlacing". While this term maybe somewhat inaccurate to describe the source of the artefacts, it is quite descriptive for the end result.
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But even after deinterlacing some red and some green pixels stay where the last field was.
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Some camcorders mix different colors into different fields, or use CCDs that react slower, so that you get this strange color patterns sometimes.
Furthermore there are camcorders with known "hardware bugs" that produce a color halo or a color bleeding or a color smearing (the example above was filmed with a Sony PC110, that has this known "color behaviour").
Furthermore there is something like color unsharpness resulting from the fact, that color resolution is lower than the picture resolution, meaning for example that 4 pixels share 1 color.
Furthermore there are color aberrations introduced by the camcorder's lens system.