top field, bottom field or non-interlaced? at DVinfo.net

Go Back   DV Info Net > Cross-Platform Post Production Solutions > Distribution Center

Distribution Center
PC or Mac, how to take your video to DVD or the Internet.


Reply
 
Thread Tools Search this Thread
Old November 8th, 2005, 01:53 AM   #1
Major Player
 
Join Date: Jan 2004
Location: Europe
Posts: 489
top field, bottom field or non-interlaced?

I'm burning 25p footage onto a DVD with Sonic DVDit 6.

It doesn't seem to matter whether I choose top field, bottom field or non-interlaced - the quality is very good. I'm obviously inclined to select non-interlaced as my footage is progressive.

Then again, I'm watching it on a computer monitor and the DVD will be watched on TV screens with standalone DVD players.

What setting is the wisest?

Thanks in advance.
__________________
www.irishfilmmaker.com
Graham Jones is offline   Reply With Quote
Old November 8th, 2005, 01:56 PM   #2
Trustee
 
Join Date: Mar 2004
Location: Carlsbad CA
Posts: 1,132
you should not use a computer to make the final decision about any aspect of ntsc video.

i would encode it just like it was shot, if at all possible.
Dan Euritt is offline   Reply With Quote
Old November 8th, 2005, 02:21 PM   #3
Regular Crew
 
Join Date: Nov 2005
Posts: 80
For dvd, you should use either Bottom Field or Non-Interlace, and yeah don't base your judgment on how you view it on your pc. DVD playing software on pc's like WinDVD or PowerDVD tends to use filters on the footage such as bob and weave to deal with the interlacing on most dvd's during playback, and affects the quality some.


EDIT: I was wrong and you should use Bottom Field, I had previously said Top Field but I was thinking about most movie DVDs (most of which are Top Field).

Last edited by James Llewellyn; November 8th, 2005 at 06:31 PM.
James Llewellyn is offline   Reply With Quote
Old November 10th, 2005, 12:08 PM   #4
Major Player
 
Join Date: Jan 2004
Location: Europe
Posts: 489
Ah.... everything I do is tested subsequently on a standalone guys. However sitting here doing my first encode attempt I was just wondering whether there was a best practice for 25.00 Progressive --> DVD in terms of field setting.

Non interlaced, sound like.
__________________
www.irishfilmmaker.com
Graham Jones is offline   Reply With Quote
Old November 10th, 2005, 05:34 PM   #5
Trustee
 
Join Date: Mar 2004
Location: Carlsbad CA
Posts: 1,132
as i understand mpeg2 encoding for dvd, even if it's encoded progressive, it'll still get split into fields during playback, then recombined back into a progressive frame... i'm guessing that's why you should maybe go with the best quality option, which is to encode it just how it was shot(??).

top field first vs. bottom field first is a whole lot more confusing... both pal and ntsc dv use the latter, but most other video is shot with top field first, so it ends up as top field first, like james said... and there are a lot of people who believe that if your encoder is up to it, you should convert bff to tff... i'm sticking with the way it was shot(bff), because i've never had a compatibility issue from that.
Dan Euritt is offline   Reply With Quote
Old November 11th, 2005, 12:04 AM   #6
Major Player
 
Join Date: Sep 2004
Location: Phoenix, AZ
Posts: 493
Graham,

Is your footage true 25p? If so, you should instruct your NLE and DVD encoder/authoring that it is "progressive" or "no fields." MPEG-2 encodes progressive and interlaced in a different manner, so it will effect the footage, if even in a small way.

Josh
__________________
Owner/Operator, 727 Records
Co-Founder, Matter of Chance Productions
Blogger, Try Avoidance
Joshua Provost is offline   Reply With Quote
Old November 11th, 2005, 03:28 PM   #7
Major Player
 
Join Date: Jul 2005
Posts: 230
Same as these guys - I was under the impression that for the best quality, match what you shoot.
But I also thought that if you do go interlaced, then the field order only matters if source image is interlaced. Meaning you can choose either top or bottom field first without any jitter as you're not swapping the field order, you're creating it.
Matt Brabender 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...

Professional Video
(800) 833-4801
Portland, OR

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

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

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 > Cross-Platform Post Production Solutions > Distribution Center

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 07:41 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network