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NV not working with interlaced clips in Vegas? - Fixed

 
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Leigh



Joined: 30 May 2007
Posts: 22

PostPosted: Thu May 31, 2007 9:16 pm    Post subject: NV not working with interlaced clips in Vegas? - Fixed Reply with quote

I've converted some old analogue 8mm (Video8) footage to DV, and I'm now trying to create a PAL DVD of the footage using Neat Video to clean it up (in Vegas 7.0e).

The trouble is the resulting MPEG2 video is all flickery. Something's not right, and it looks like an interlace problem to me. As soon as I disable Neat Video, the resulting MPEG2 video is fine. I've tried setting Neat Video's "Video scan type" setting to both "progressive" and "interlaced", but the resulting footage is still flickery. When the video is being rendered, I can tell something's wrong as the Vegas' preview windows shows an interlaced picture.

I’ve uploaded a sample video to http://www.curvenet.co.uk/nvi_sample.mpg and here's the same clip rendered with NV turned off: http://www.curvenet.co.uk/nv_sample.mpg

Any ideas? This is a bit of a show-stopper for me...


Last edited by Leigh on Sun Jun 03, 2007 4:23 pm; edited 6 times in total
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NVTeam



Joined: 01 Sep 2005
Posts: 2238

PostPosted: Fri Jun 01, 2007 1:23 pm    Post subject: Reply with quote

The problem may be in the project setting. Could you please upload a sample project that would use the original clip, so we would be able to directly reproduce the flickering effect?

Vlad
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Leigh



Joined: 30 May 2007
Posts: 22

PostPosted: Fri Jun 01, 2007 1:32 pm    Post subject: Reply with quote

Hi Vlad.

I've taken this from my email reply to you, in case you haven't received it:

You are correct. My Video8 clips are in the 4:3 format, but I am rendering to 16:9. Vegas happily works like this (and is designed to be this flexible afaik), and the resulting DVDs display perfectly on both 4:3 and 16:9 TVs. I've always used this approach when converting my old 4:3 8mm footage.

NV2.0 does not seem to like this configuration. What can be done to fix this?

I will create a dummy project for you if you think it will help in solving this problem.
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NVTeam



Joined: 01 Sep 2005
Posts: 2238

PostPosted: Fri Jun 01, 2007 1:45 pm    Post subject: Reply with quote

Thank you very much. Reproducing the effect directly (using a sample project) will greatly help us diagnose the problem.

Vlad
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Leigh



Joined: 30 May 2007
Posts: 22

PostPosted: Fri Jun 01, 2007 1:52 pm    Post subject: Reply with quote

I will get a sample project to you as soon as I'm home from work.

Thanks for the fast response to my issue.
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Leigh



Joined: 30 May 2007
Posts: 22

PostPosted: Fri Jun 01, 2007 4:55 pm    Post subject: Reply with quote

I'm getting two (vertically squashed) frames in NV's preview window when I set the source to interlaced. I assume this is symptomatic of the problem?

I thought I had this sorted but It's still not right, so I'll get that sample project to you tonight. What do you need from me? The project file and a sample DV file?
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Leigh



Joined: 30 May 2007
Posts: 22

PostPosted: Fri Jun 01, 2007 6:43 pm    Post subject: Reply with quote

I've sent you a link to my sample project (~25mb). Let me know if you need anything else from me.
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NVTeam



Joined: 01 Sep 2005
Posts: 2238

PostPosted: Fri Jun 01, 2007 6:47 pm    Post subject: Reply with quote

"two (vertically squashed) frames in NV's preview window" is normal. Those are not frames, those are two fields (upper and lower) from the interlaced video stream. When you (Vegas, NV, etc) work with interlaced video data, you work with individual fields that are smaller than the full frame. NV simply shows you those two fields in such an explicit way to make sure a noise profile is build correctly.

Again, this is normal when you work in NV with progressive video. The filtration results will look normal.

If you work with progressive video stream in your project then you have to switch NV to the progressive mode (in NV settings panel) and the plug-in will show the progressive frame in preview.

Vlad
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Leigh



Joined: 30 May 2007
Posts: 22

PostPosted: Fri Jun 01, 2007 7:44 pm    Post subject: Reply with quote

That's ok then - Thanks.

Have you managed to download my sample project ok?
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NVTeam



Joined: 01 Sep 2005
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PostPosted: Sat Jun 02, 2007 1:37 am    Post subject: Reply with quote

Unfortunately no, it says "The page cannot be found". I guess there is a typo in the link. Could you check it please?

Thank you,
Vlad
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Leigh



Joined: 30 May 2007
Posts: 22

PostPosted: Sat Jun 02, 2007 10:24 am    Post subject: Reply with quote

Sorry Vlad - 7z files don't appear to download from my webspace. Weird!

I've re-uploaded and sent you another email.

Leigh
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Leigh



Joined: 30 May 2007
Posts: 22

PostPosted: Sun Jun 03, 2007 10:05 am    Post subject: Reply with quote

My email is playing up, so I thought I'd post here to be sure you get my reply.

Basically, your suggestion worked. NV works properly if I set each clip in turn to progressive scan. However, my clips are all DV interlaced, so it would be a pain to have to change each one in turn, just for NV). Everything else in Vegas happily works with DV interlaced.

Shouldn't NV work with interlaced clips? I was under the impression it did when I purchased it, and there is an interlaced setting in NV. It looks like Vegas is doing something to confuse NV.

I never work with progressive video, as all of my footage is DV interlaced and hi-def interlaced (1080i). To have to change all of my clips to progressive is a real problem for me, as I have many clips in my project(s).

Thanks Vlad.

Leigh
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Leigh



Joined: 30 May 2007
Posts: 22

PostPosted: Sun Jun 03, 2007 4:20 pm    Post subject: Reply with quote

Update for anyone following this thread:

The NV team has identifed the cause of the problem I've been experiencing and, can you believe it, they've already fixed it! The test build I've received from the works perfectly with my media in Vegas.

I just want to publicy say that I'm blown away by the level of support (and the speed all responses) that I've received since puchasing NV just days ago.

I'm one *very* happy NV user.

Thats to all at NV (especially Vlad).

BTW: I've updated the original thread title to reflect that this is no longer a problem for NV. Wouldn't want to put off any prospective customers.
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Joran



Joined: 08 Jan 2006
Posts: 47
Location: Oslo, Norway

PostPosted: Sun Jun 03, 2007 5:41 pm    Post subject: Reply with quote

One question: When can we download this new version of NeatVideo for Sony Vegas?


Jøran Toresen
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NVTeam



Joined: 01 Sep 2005
Posts: 2238

PostPosted: Sun Jun 03, 2007 5:55 pm    Post subject: Reply with quote

We will release a regular update that will include this correction. I expect it later this month.

Vlad
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