Blur/motion/ghosting lines on video? How to fix - Page 2 at DVinfo.net
DV Info Net

Go Back   DV Info Net > Windows / PC Post Production Solutions > What Happens in Vegas...
Register FAQ Today's Posts Buyer's Guides

What Happens in Vegas...
...stays in Vegas! This PC-based editing app is a safe bet with these tips.

Reply
 
Thread Tools Search this Thread
Old June 3rd, 2011, 10:26 AM   #16
Regular Crew
 
Join Date: Feb 2011
Location: Canada
Posts: 137
Re: Blur/motion/ghosting lines on video? How to fix

Quote:
Originally Posted by David Jimerson View Post
The frame rate and p or i are not the same thing. Progressive means full-frame pictures are taken. Interlaced means half-frame pictures are taken, the half being every other line of vertical resolution (line 1, line 3, line 5, etc., then the next picture would be the even-numbered lines).

A few points:

60i is often called "30i" or "29.97i," because the time code is based on 29.97 frames per second, but it's inaccurate, misleading, and confusing. It's a throwback which is no longer necessary.

60i is more properly called "59.94i." This is because there are actually 60 (59.94) pictures taken per second, not 30. Each interlaced field is a separate picture. They say two fields put together make a "frame," but anyone who's worked with video knows why that isn't true -- you'll see the comb artifacts made by mashing together two pictures taken at different times.

This matters to the motion, too, because a moving object is in twice as many positions per second as it would be in true 30 fps. True 30 fps would be 30 pictures per second, meaning there's twice as wide a gap between the positions of moving objects from picture to picture. Obviously, less of a gap means smoother motion, so 60i motion is twice as fluid as 30p.

So, you can see why 60i and 60p would have the same motion -- it's the same number of positions per second for any moving object. 60p being progressive, the resolution of a 60p frame is twice that of any 60i field, but the motion characteristics are exactly the same.

There really is no such thing as 30i or 29.97i -- no format shoots or displays 30 interlaced fields per second. But, you'll still see that nomenclature in legacy equipment and software with a history going back more than a decade. Would be nice if it would go away, because it's confusing.
Jeez, if I wasn't confused before. :p

So, basically, if I shoot at 24 fps I should choose HD 1920x1080 24p in the timeline and 24 fps (FILM) as the frame rate in my time-line?

When I render I should render (for the internet SONY AV) I should choose 920x1080 24p with a frame rate 23.976, progressive? For DVD I choose DVD architect.

Each should, then, be selected at Progressive scan.

That seems to be what I am getting now.
Robert James is offline   Reply With Quote
Old June 3rd, 2011, 11:30 AM   #17
Jubal 28
 
Join Date: Mar 2005
Location: Wilmington, NC
Posts: 872
Re: Blur/motion/ghosting lines on video? How to fix

Yes, use that timeline for your 24p footage. But no, don't choose 24.000 for the frame rate, choose 23.976.

The frame size for rendering out depends on what you're doing, but 23.976 progressive is pretty much always going to be your frame rate.
David Jimerson is offline   Reply With Quote
Old June 3rd, 2011, 11:00 PM   #18
Regular Crew
 
Join Date: Feb 2011
Location: Canada
Posts: 137
Re: Blur/motion/ghosting lines on video? How to fix

I have also been using:
/ PIXEL RATIO at 1,000 / BITRATE 2,000,000

Is this about right?
Robert James is offline   Reply With Quote
Old June 4th, 2011, 08:30 AM   #19
Jubal 28
 
Join Date: Mar 2005
Location: Wilmington, NC
Posts: 872
Re: Blur/motion/ghosting lines on video? How to fix

The PAR is correct. Bitrate depends on what you're doing with it.

Generally, the render templates are optimized for the purposes they're named for.
David Jimerson is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

B&H Photo Video
(866) 521-7381
New York, NY USA

Scan Computers Int. Ltd.
+44 0871-472-4747
Bolton, Lancashire UK


DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Windows / PC Post Production Solutions > What Happens in Vegas...


 



All times are GMT -6. The time now is 11:18 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2024 The Digital Video Information Network