I have an old cartoon that was transferred onto a DVD, mistakenly transferred without being de-interlaced. I have been using FCP 7's Flicker Filter and De-Interlace features, but none seem to be working. I would like some help on the matter, please. Here are four frames to serve as an example.
Doesn't look like an interlacing problem to me. It looks more like the frame rate of the footage was changed. The ghosting that you see are interpolated frames. (Since old cartoons like that only have very few frames per second animated, interpolating frames does not quite work. That's why it looks that bad.)
There is nothing you can do to fix that, except to find a version of the clip that still has the original framerate.