"Comb like" contours when exporting 2

[e93mw]

Hi!
When I export to AVI from Premiere the
objects in the movie get "comb like"
contours. I have read that this might happen
if you have the wrong field order since it
is interlaced video. Well, I have tried to change
from "Lower field first" to "Upper field first" and
even "No fields" but I still get the comb pattern!

Has anyone encountered this problem? I use Premiere 6.0
and W2000.

Thanks in advance!

/ Mattias from Sweden

 

[lloydaus]

Driving me MAD. I get the same problem with Videostudio and With Premiere 6.0 and 6.5.

People say it is just the interlacing and you will ahve stripes, but I tell them the image is displaced in strips and they dont believe me.

However tonight, the file I have been working on has fixed itself - I dont know how!

Have you had any success?

Regards

Lloyd

 

[EdwardMartinIII]

I know it's an old topic, but this is the first time I've encountered it because before this, I did animation.

I have an older VHS camera. Obviously, the viewfinder reveals clean video and if I run it into a TV, I also get clean video. When I digitize it through my ATI All-in-Wonder card to my Windows 98 machine, I get an AVI file. In ulead's VideoWave 5.0, it seems to look fine, but when I import the same file into Premiere 5.1c, I see these horizontal comb effects whenever there's motion.

I suspect there is a setting or something with which I need to fiddle. I right-click on the AVI file and look at video >> Field properties and have tried various combinations of the settings there. Although a couple have produced a sort of blurring that crappily masked the effect, nothing really did the snap-trick I expected.

If I hadn't seen that it looked great in VideoWave and I didn't know that it looks great when I pipe it right to the TV from the camera, I'd settle for junk video, but I know better than that.

Tonight, I'm going to see if there are some other parameters under which I can re-import the video. Maybe there's some sort of setting in ATI's recording software that'll help.

I honestly believe, however, that there must be some combination of project/clip settings in Premiere that will allow this video to look as smooth as it does on a TV or in VideoWave.

(when I transfer the video to the Win2000 machine running Premiere 6.5, it doesn't even allow me to import the video, claiming it's an unsupported format/codec or something. This might be useful, might not be useful.)

Professor Backwards pleads "Pleh! Pleh!"

Cheers,


Edward

"Cut a hole in the door. Hang a flap. Criminy, why didn't I think of this earlier?!" -- inventor of the cat door

 

[Akribie]

Premiere's computer display of interlaced video often shows interlacing artifacts that are not apparent when the same footage is viewed on an interlaced display such as a TV.

If your output target is TV/tape or other interlaced target, then best to connect a TV during editing to judge quality in the target environment.

If your target is a non-interlaced computer display, then export with 'no fields'.

 

[EdwardMartinIII]

My target will be a DVD, which will be digitally projected. It will also maybe show up on VHS here and there.

What I'm seeing looks a lot like the sample sequence for
thread230-670566

So, you're suggesting I go ahead and run with the artifacts until I can burn a DVD and watch it in a console set, on the theory that the artifacts all fall out at the end of the process?

I mean, I can do that, I'm just making sure I understand the sequence you're talking about.

Cheers,


Edward

"Cut a hole in the door. Hang a flap. Criminy, why didn't I think of this earlier?!" -- inventor of the cat door

 

[Akribie]

Much better if you can get a look on an interlaced display just to make sure before wasting DVD blanks, but in general these comb-like interlacing artifacts which show up in the Premiere monitor window disappear when the same material is viewed on an interlaced display like a TV or video projector or camera side screen.

You might think about burning a cheaper SVCD as a test if DVD blanks seem expensive to you.

Otherwise, in your situation, I would go ahead and expect it all to turn out OK.

 

[EdwardMartinIII]

Okay, I wanted to make sure I understood what you were suggesting. It's not like DVD blanks are gold or anything, just making sure before I start. And yeah, I'll check it on my NTSC monitor, too.

Thanks for the suggestion, Akribie! I'll let you know how it comes out.

Cheers,


Edward

"Cut a hole in the door. Hang a flap. Criminy, why didn't I think of this earlier?!" -- inventor of the cat door

 

[lloydaus]

This is EASY TO FIX, just select all the clips on the timeline and change the field options to deinterlace.
Then when you export the clip is deinterlaced and all is fine.

 

[EdwardMartinIII]

Akribie, that was the biscuit!

When I viewed it on the NTSC monitor, it looked great! Annoying as all get out not being able to "fix" it while editing, but at least now I know to watch it through the monitor and see what happens.

Is this something I just have to get used to, or will I no longer see this problem if I get me one o' them prissy digital cameras?

Cheers,


Edward

"Cut a hole in the door. Hang a flap. Criminy, why didn't I think of this earlier?!" -- inventor of the cat door

 

[Akribie]

It's all due to showing interlaced video on non-interlaced displays and compromises made by Adobe to keep the frame rate up during timeline replay. If you look closely, you might see that it slips back into better quality after replay stops for a short time.

Changing your camera isn't likely to make any useful difference.

Glad it all came good in the end.

 

[EdwardMartinIII]

Well, I do have a pretty crappy camera, so i wouldn't go so far as to say that.

Cheers,


Edward

"Cut a hole in the door. Hang a flap. Criminy, why didn't I think of this earlier?!" -- inventor of the cat door