Interlaced video or DV compression?

[David J]

What you see is a rather extreme example of the visual effect of interlacing on a still image.

The two fields of an interlaced image are half a frame interval apart, so every other line is part of the alternate field. If there is horizontal movement, you get a ‘combing’ visual effect as your image shows.

You have two choices to ‘fix’ this.

1. Select the ‘deinterlace’ option in the still image export settings within Premiere.

or 2. Use an image editor like PhotoShop and apply the deinterlace effect there instead.

Deinterlacing takes one of the two field images and duplicates the lines to fill the gaps left by removing the other interlaced field. Depending on your image software, you may have options to average, duplicate, take odd/even field.

[Seth Hancock]

Hey there,

I shoot entirely in DV and have this problem frequently. I spent the money for an AE/Combustion Plug-In called Fields Kit from RE:Vision Effects.

http://www.revisionfx.com

I know it is an extra step. But, when creating a video for broadcast or regular viewing this plug makes all the difference in the world for me. I recently shot this girl riding a ATV and she would ride up a hill and come flying by the camera. Initially, this shot looked like crap until I used Fields Kit. Once applied I was able to use it to achieve some great rotoscoping work.

I have not tried using Fields Kit with PP 1.5 since I clean everything up in AE & Combustion before putting to PP. I hope that helps.

Seth

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