I've always been told to crop in even numbers 4 and 2 or 2 and 4 I guess. Using odd numbers of crop will invert the field order. Not something I've had to deal with first hand but that's what I've read in threads over the years. I have experienced the freaky banding when importing into Avid where the 480 gets stretched to 486.
--- In Avid-L2@yahoogroups.com, Steve Hullfish <steve4lists@...> wrote:
>
> Right.
>
> The problem is that if you have a movie that is 720 x 480 and you BLOW IT UP to 720 x 486 you get these freaky "interpolation-like" banding lines. Better to just add three lines of black at the top and bottom.
>
> You also don't want to take a 720 x 486 and squish it to a 720 x 480 DVD size. It's better to just crop off 3 lines from the top and 3 lines from the bottom than to try to divide 486 into 480.
>
> That's some ugly math.
>
> Steve Hullfish
> contributor: www.provideocoalition.com
> author: "The Art and Technique of Digital Color Correction"
>
> On Apr 27, 2011, at 8:51 AM, Bouke wrote:
>
> > No, pad means ADD LINES without distorting your orignial image.
> > (As crop means remove lines without distoring your original image)
> >
> > Bouke
> >
> > VideoToolShed
> > van Oldenbarneveltstraat 33
> > 6512 AS NIJMEGEN
> > The Netherlands
> > +31 24 3553311
> > www.videotoolshed.com
> > For large files:
> > http://dropbox.yousendit.com/BoukeVahl998172
> >
> > ----- Original Message -----
> > From: "Paul Dougherty" <lists@...>
> > To: <Avid-L2@yahoogroups.com>
> > Sent: Wednesday, April 27, 2011 1:35 PM
> > Subject: Re: [Avid-L2] Re: OT - footage that looked ok in Seq, has
> > interpolation prob in D
> >
> > > Thanks Jonathan,
> > >
> > > Someone from C Cow said "adjust to Crop/Pad for DV line difference"
> > > - I guess pad means resize or blow up (ditto your concert
> > > suggestion), I'll try both
> > >
> > > Paul
> > >
> > >>
> > >>I have run into this problem as early as last week. I found that when I
> > >>ripped the dvd and converted it to mov files (using tmpgenc), the video
> > >>needed to be converted to 720x486 instead of 720x480. Also, I had to
> > >>check the field order in tmpgenc and make sure that on import the avid
> > >>field order was the same. In this case, it was upper field first.
> > >>
> > >>The computer (pc or mac) will always show dvd's as progressive as their
> > >>displays are not interlaced. For that reason, I would grab a standard
> > >>dvd player and check it on that as well as the computer.
> > >>
> > >>Hope this helps.
> > >>
> > >>--
> > >>Jonathan Donley
> > >>Field 1 Post, LLC
> > >>"Delivering Your Message...Using Video and the Internet"
> > >>
> > >>[Non-text portions of this message have been removed]
> > >>
> > >>
> > >
> > >
> > > [Non-text portions of this message have been removed]
> > >
> > >
> >
> >
>
>
>
> [Non-text portions of this message have been removed]
>
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