Flickering: how to get rid of it? (capturing from VHS)

[Chainmax]

I wanted to know if you guys have any suggestions on how to reduce/eliminate flickering on VHS caps. The specific problem I'm talking about is the following:

"It's as if the source was IVTC'd wrong. The native cap is fine for a
frame, then looks like 320x240 blown up to 720x480 for a frame or two
(all the blocky pixels), then fine, then backto blown up... but not in
the normal 3:2 order the rest are, this is completely random"

This is the specific issue I need to fix, but I'd appreciate tips for eliminating or reducing any kind of flickering too.

[scharfis_brain]

Could you make a sample available,please?

[Chainmax]

Sure. What do you prefer: clip or image?

[jggimi]

Short clip, please, since the "flicker" may not be obvious in a single image. I've had flicker in content like Seven Samurai, but that's because of it's unusual film frame rate.

[scharfis_brain]

But ensure interlaced encoding without resizing the picture!

laced MJPEG (Quality > 75% / 16) or laced MPEG-2 with HIGH bitrate (> 5Mbps!)

I think a 5 to 10 sec. clip should be nice.