major problem with footage

ugafan

ugafan

Looking for a woman
i need some help guys. here is a grab of some footage i shot. it was shot on the dvx, scene file 1. default settings for everything. i captured it using sony vegas.

the problem is that when i captured the footage on the computer, there are these lines on anything that is moving. can someone please explain why it looks like this?
football.jpg


if i use guassian blur on it, then i don't have the lines, but it looks a lot blurrier.
football-1.jpg



what is going on here? the footage looks fine on the camera viewfinder. if anyone knows what is going on here or can offer some suggestions, please help.

thanks
 
As far as I know they're interlace lines. If you shot with scene file 1 - its interlaced footage, not progressive. You have to deinterlace your footage to get rid of the lines...with that you get a loss of resolution though.

-Kegan
 
Well, it depends on the monitor you view it on. For TV broadcasting I believe the standard is interlaced.

-Kegan
 
Sony Video Capture > Options > Preferences > Capture Tab > Custom Frame Rate


(edit: the following is moronic troubleshooting.)

Just change your capture settings to what you used when filming (probably 60, right?) and the lines should go away. Vegas doesn't guess what frame rate you shot in, you have to specify. The default is 29.970 fps. So you are capturing every other INTERLACED frame.


Change capture settings. Don't blur, no no no no no no no,
 
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your footage will respond to the type of settings your timeline is set to. Since you shot this at 60i, you need to either deinterlace the footage or change your settings on the timeline to 29.97 frames/sec.
 
If you still see it in your 60i timeline check to see if its set to upper or lower fields first. I think it should be on lower fields first.
 
Use a deinterlacer like FilmFX and it will re integrate the footage. (not field strip but field blend). I think after effects does this but certainly with plug ins like Magic Bullet or cinelook.
 
Hunter007 said:
Well, it depends on the monitor you view it on. For TV broadcasting I believe the standard is interlaced.
Click to expand...
Yes, NTSC is interlaced. There's no progressive broadcast format in SD. What's the end use for this video? DVD for playback on a monitor or encoding for the internet? If you plan on handing off the disc for somone to watch on their TV then don't deinterlace.

Beat Takeshi said:
If you still see it in your 60i timeline check to see if its set to upper or lower fields first. I think it should be on lower fields first.
Click to expand...
I have to agree with this, it's hard to tell from a still image but it could be a field order problem. Field order for NTSC is typically lower field first, but this isn't set in stone. Field order is determined by the app you're using. Avid MC & FCP are LFF. What's the field order for Vegas?

ugafan said:
so basically i should have shot with progressive on?
Click to expand...
No. 60i is the proper setting. Shooting progressive vs interlaced is an aesthetic decision. Sports are shot interlaced about 90% of the time. IMO, 60i is the right choice given the subject matter.
 
Knoxworth said:
Sony Video Capture > Options > Preferences > Capture Tab > Custom Frame Rate


Just change your capture settings to what you used when filming (probably 60, right?) and the lines should go away. Vegas doesn't guess what frame rate you shot in, you have to specify. The default is 29.970 fps. So you are capturing every other INTERLACED frame.


Change capture settings. Don't blur, no no no no no no no,
Click to expand...

What? No.

When Vegas captures at 29.97 (and there's no reason to change that unless you're in PAL land), it doesn't capture every other interlaced field; it captures the footage as-is -- interlaced 60i.

This won't get rid of the interlacing, because the interlacing is part of the picture.
 
jamestmather said:
Use a deinterlacer like FilmFX and it will re integrate the footage. (not field strip but field blend). I think after effects does this but certainly with plug ins like Magic Bullet or cinelook.
Click to expand...

Blending fields will cause terrible ghosting around any moving objects . . .
 
I know that in Premiere you need to create a project based on how you shot it - 24P, 30P, etc - not sure what software you use, but that could be it too.
 
Not necessary with Vegas. But in any case, this is how 60i footage is supposed to look.

It doesn't look like this on a TV (or the DVX LCD) because the TV is interlaced, so it only shows one field at a time. What you're seeing here is two fields, both taken at difference instances, so where the players have moved, you see them in those two different places.
 
Ive been avoiding 60i for this flicker look. Its just annoying to look at on the timeline. But i didnt realize it fixes itself on the tv screen.
 
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