problem with DV interlacing after editing

[cheeseplease]

I captured a VHS via DV camcorder. Since it was pretty noisy I ran it thru a denoiser in VirtualDub.
Now after running thru VD it seems to be 'uninterlaced', means when I watch it on the comp it looks like a diashow, like half of the images arent being used or something. No interlace combs and lines, rather the opposite. But what is going wrong in VD and how can I avoid it? I'm cleaning the noise with NeatVideo, but I guess that that filter doesnt affect any interlacing. I used several DV codecs, even tried with MainConcept DVcodec cause it was said to be a sure choice.

However no matter what I did, the result was 'uninterlaced' video. Do I have to set up something in VD so it doesnt uninterlace the video? are there any settings to control interlacing? its freakin me out...


and: since I already denoised some other material (and addentially fucked up the interlacing in it), can I repair the stuff without any quality loss?

[Barnabas]

NeatVideo says to use it on progressive stuff, not interlaced. I have seen where folks have said they have used NeatVideo on interlaced with decent results.

That said, I just bought NeatVideo today to try out on a RARE interlaced video I recorded 15 years ago, that nothing else would work on. Tried Conolution3d, Peachsmoother, and about 5 others, none cleaned the video like my test of NeatVideo did. This was a SVHS movie taped at ep mode. (SVHS tapes were $20.00 a piece back then.)

Still have 33 hours to go for the final results, but will check to see how the interlacing looks when done.

[SerbianBoss]

Can you post some pictures to see results. One original and one cleaned with neatvideo.

[jagabo]

How to use non-interlace-aware filters on interlaced video in VirtualDub:

1) deinterlace -- unfold fields side-by-side
2) apply non-interlace aware filters
3) deinterlace -- fold side-by-side fields togehter

[Barnabas]

This is the before shot of a VERY noisy SVHS video



This is the same frame after cleaning with NeatVideo

[SerbianBoss]

This is interlaced movie? Does this filter can be used on interlaced material?

[Barnabas]

Yes, that was an interlaced movie. It was originally recorded from commercial c-band satellite equipment via the composite inputs, to SVHS tape, in ep mode. There is LOTS of noise present and the tape is 15 years old. While neatvideo does not really intend that their filter be used for interlaced video, it still seems to work very well on interlaced stuff.

I tried all sorts of other filters, but none were able to give anywhere near these results. The big problem with these ep SVHS tapes is that they show more noise at the bottom 6th of the screen, so most filters don't seem to get the bottom noise out very well.

[manono]

Yes, that was an interlaced movie.

Sounds like a contradiction in terms. You sure it can't be IVTC'd, and then cleaned without that special treatment for interlaced video?

[SerbianBoss]

I think that is not good to use neat video on interlaced material if dont have support for interlaced video. I try trial version and resuts are very good, but very slow on my dual x2 3800+ with 2 gb ram it was 2 fps.

[Barnabas]

The video actually looks fine, can't see any problems with it due to interlacing. Slow is an understatement, this thing crawls, but the time it took was at least well worth the end results. Check the neatvideo forum for more info on using it on interlaced material.

[sanlyn]

I've had no problem using NeatVideo on interlaced material. At great, time-consuming trouble I tried de-interlacing but found no difference in the results. A video using a combination of interlacing and telecine is more trouble than it's worth, so I leave it as-is. BTW, the filtered sample shown above is overly filtered and looks plastic; I would have reduced the filering a bit -- but, then, it all depends on your preferences.

[ofbarea]

Does this filter can be used on interlaced material?

With version prior to 2.0 you just need to do the following:

How to use non-interlace-aware filters on interlaced video in VirtualDub:

1) deinterlace -- unfold fields side-by-side
2) apply non-interlace aware filters
3) deinterlace -- fold side-by-side fields togehter

Another quote in the link: http://neuron2.net/faq.html#interlaced


Neatvideo 2.0 has a check mark for working with interlaced video.

[SerbianBoss]

so now neat video(2.1 version) support interlaced videos

[sanlyn]

[quote="ofbarea"]

Does this filter can be used on interlaced material?

With version prior to 2.0 you just need to do the following:

How to use non-interlace-aware filters on interlaced video in VirtualDub:

1) deinterlace -- unfold fields side-by-side
2) apply non-interlace aware filters
3) deinterlace -- fold side-by-side fields togehter

-end quotes-

Unfolding works only with the pro edtion of NeatVideo. The Home version has a processing
size limit of 720x480. When NeatVideo unfolds a 740x480 frame, the resulting image
processing size is 1440x480, in which case NV's Home version displays a rather rude
message about the frame width "violation".

Version 2 of the Home edition does have a switch by which you specify whether your
video is interlaced or non-interlaced. You can always lie about it either way --
apparently NV can treat a video both ways. I've used it both ways and, as stated
earlier, I see no difference in the results.