Hi All

There has been much discussion on interlacing, however I'm not sure that any of it has answered a question I have (And if it has, I apologise for not seeing it).

I record Rage with my AverMedia. Some clips playback with excellent quality. Other clips have a strange interlacing issue. Every frame is comprised on half the lines from the previous frame, and half the lines from the next frame, giving a jaggered look. It's a bit like watching a scrolling image on a 100hz widescreen tv. I've looked at the individual frames, and they all have the interlacing issue.

So I figure the original fileclip was recorded on the cheap and is corrupt (unlikely), or the Avermedia is incapable of correctly converting an interlaced image to a progressive scan image.

Is there some way of deinterlacing these images? I've played around with deinterlacing in VirtualDub and TMPGEnc, but the output has the same problems.

Its not that unusual a thing to see. Basically the editor made a boo-boo and dropped a single field. There are some shows that are edited extremely poorly and drop fields quite a lot. To put things back to normal, you have a few choices.

Since you seem to be using virtualdub, get the 'dynamic field order correction' filter from http://www.digtv.ws/html/filters/

If you opened the .mpg via an avisynth script using mpeg2dec3.dll, you could just throw in a telecide() line and it would do the same thing.

Thanks DrP

All that is well and good.....except the http://www.digtv.ws/html/filters/ website is off the air, and so is the hoster of the telecine() plugin :-(

...although i did get the VirtualDub deinterlace filter working nicely - that has sort of solved the problem.

Well I had a look at the DFOC filter and has is pretty amazing. It is very good at deinterlacing frames, although it seems to drop a few frames, meaning the playback wasn't quite as smooth as the standard "deinterlace" filter in VirtualDub (which I finally worked out how to use). Does this match other peoples findings?