How to export without getting forced Interlacing

Matt Grunau

Matt Grunau

Adobe Demigod
Hi all. I have had this problem for years and can not find a cure. I have progressive footage, I have Vegas project file set up to be progressive, I right click on the footage and go to properties and make sure it is set to Progressive (sometimes it's not), I render out in something like quicktime with the Animation codec, or an .avi with the DV codec, I've tried them all, with progressive selected in the output options.

Yet every time I get interlaced footage. Vegas reads the file just rendered as interlaced, so does After Effects, and Premiere. What do I have to do to get it to render progressive.

I know it can be done with 24p footage, I do it all the time. Why does 29.97 always come out interlaced?

Here are a couple of examples. This is just a simple spining text extruded and textured, then animated in Lightwave. The motion blur sucks, but hey that's Lightwave for you.



1204682461.jpg



1204682884.jpg



1204682865.jpg




What in the heck am I doing wrong? This is progrssive footage right out of lightwave.

I have Vegas version 6.d, but have had the problem since version 4. Someone please weigh in on this. I do a lot of web video using vegas as my editor, and the interlaced lines really hurt my work. And I hate the workaround of redering an entire project uncompressed just so I can have After Effects deinterlace it for me and apply the proper web codec.

Thanks.
 
I'm testing it out and getting the same results. Fast motion on text in Vegas appears to be interlaced regardless of project settings.
 
Interestingly, rendering in "preview" is solving the problem for me. Maybe these aren't the same circumstances as yours.
 
What are the project settings (exactly)?

What are the properties of the text file (exactly)?

Do you have a deinterlace method chosen in the project settings? If not, choose Interpolate.

What are the exact render properties?
 
Looks like I need to jump in on this thread and learn too, if Matt doesn't mind. Same question... I would've said something like 'what's the point of progressive shooting if it ends up interlaced on tv anyway?' Am I missing something? I am editing in Premiere (elements at the moment). I am so disappointed with the way lines look so fuzzy on these slick helicopters, the subject of my video. Should I be addressing something I'm not in order to truly see the highest-quality, non-interlaced video upon output to DVD?

Sorry for the ignorance. I'm sniffing about here with the search in the meantime.
 
David Jimerson said:
What are the project settings (exactly)?

What are the properties of the text file (exactly)?

Do you have a deinterlace method chosen in the project settings? If not, choose Interpolate.

What are the exact render properties?
Click to expand...

Template NTSC DV (720x480, 29.97fps)
Width 720, Height 480, Field order None (Progressive Scan), Pixel Aspect Ratio0.9091 (NTSC DV), Frame Rate 29.97 (NTSC)

Full-reolution rndering quality: Best
Motion blur type: Gaussian
Deinterlace Method: None

Movie is Quicktime 720X480, 29.97 fps .9 aspect ratio, field order: none

Render Properties are the same as the project properties, though with different codecs, usualy .avi with DivX, Quicktime with Animation or Sorenson 3, or .mpg2.


Strange isn't it? Works fine on 24p. Not a Interlaced line in sight.
 
AppaLuci said:
Looks like I need to jump in on this thread and learn too, if Matt doesn't mind. Same question... I would've said something like 'what's the point of progressive shooting if it ends up interlaced on tv anyway?' Am I missing something? I am editing in Premiere (elements at the moment). I am so disappointed with the way lines look so fuzzy on these slick helicopters, the subject of my video. Should I be addressing something I'm not in order to truly see the highest-quality, non-interlaced video upon output to DVD?

Sorry for the ignorance. I'm sniffing about here with the search in the meantime.
Click to expand...

Progressive acquisition is inherently higher-resolution and it can more closely approximate the look of film.

It may end up as interlaced on a standard TV (though that's only if you need to conform it to 59.94i, which you don't always need to do), but the general aesthetics will remain the same. Much of the look of 24p or 30p comes from the time sampling.

Remember, any movie you watch on a standard TV started out as 24 fps, progressive, and had to be conformed for the standard TV. It retains its filmic look.

In order to take advantage of 24p and eliminate the comb interlaced artifacts you see in your timeline, you must be able to remove its pulldown and edit in a 24p timeline. Premiere Elements will not do either of those things.

But, the artifacts won't be visible on a standard TV.
 
David Jimerson said:
In order to take advantage of 24p and eliminate the comb interlaced artifacts you see in your timeline, you must be able to remove its pulldown and edit in a 24p timeline. Premiere Elements will not do either of those things.
Click to expand...


Yeah, I've realized that about 24p and Elements... that's why Premiere CS3 is on its way to me now so I can move up soon. In the meantime, with Elements project, I did not shoot 24p, I shot 30p.

On field options for each clip I can chose "Always Deinterlace" but I'm not sure what that does, if it's only applying to one clip. I am playing with a few things... and hopefully will glean more as I invest the time experimenting. I don't know how to interpolate my footage... still even learning what that means!

Anyway, thanks for your efforts to attempt to help me with this.
L
 
If you shoot 30p, then don't deinterlace -- there's no need.

"Interpolation," in deinterlacing, means that it takes a field (half of a frame) and creates a full frame from it. But it's working from half the picture information of a progressive frame, so it'll be half-resolution.
 
Hey David, thanks again for your help. I just tried a few of the most problematic clips and they came out wonderfully. This is really going to help my workflow.

Thanks again.
 
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