I am making DVDs and VHS tapes of my POV animations for playback on an NTSC
TV system. I load the TGA files into Premiere, and when I Export as a Movie,
I have the option of choosing lower or upper fields first. Which should I
choose and why?
Thanks much.,
Dennis

--

dhm### [at] attbicom
http://www.dennismiller.neu.edu

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in news:3dcc141b$1@news.povray.org Dennis Miller wrote:

> I have the option of choosing lower or upper fields first. Which
> should I choose and why?
> 

Read "5.2.1.5  Field Rendering" it may have the answer you're looking for.

Ingo

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On Fri, 8 Nov 2002 14:44:16 -0500, "Dennis Miller"
<dhm### [at] attbicom> wrote:

>I am making DVDs and VHS tapes of my POV animations for playback on an NTSC
>TV system. I load the TGA files into Premiere, and when I Export as a Movie,
>I have the option of choosing lower or upper fields first. Which should I
>choose and why?
>Thanks much.,
>Dennis

For TV system use upper field.

The only exception to this that I know is if you're targetting a DV
device such as a DV camcorder - in this case you need to specify lower
field.

As a side note, if you didn't use field output when rendering the
animations the field order won't make any difference!

Cheers,

Scott

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Thanks Scott. The guys at Canopus (makers of Procoder) told me that even if
I hadn't used fields in POV, that I should render my uncompressed AVI (from
a Targa sequence) using upper if I wanted the smoothest motion on a TV.
Of course when I send this work out, I never know what the viewer will have
on the other end, which is yet another pain.
But the bottom line is, if I do render with fields, will that produce even
better TV viewing than not using fields? I can't honestly say that there is
currently a problem (no fields in POV to no fields in Premiere to no fields
on the DVD), but would there be a clear advantage to using fields if the
ultimately outcome were to be a TV screen?
thanks,
d.

<Scott Moore> wrote in message
news:lqsmtukf4pm02ih70v3ahsf1eid4er0228@4ax.com...
> On Fri, 8 Nov 2002 14:44:16 -0500, "Dennis Miller"
> <dhm### [at] attbicom> wrote:
>
> >I am making DVDs and VHS tapes of my POV animations for playback on an
NTSC
> >TV system. I load the TGA files into Premiere, and when I Export as a
Movie,
> >I have the option of choosing lower or upper fields first. Which should I
> >choose and why?
> >Thanks much.,
> >Dennis
>
> For TV system use upper field.
>
> The only exception to this that I know is if you're targetting a DV
> device such as a DV camcorder - in this case you need to specify lower
> field.
>
> As a side note, if you didn't use field output when rendering the
> animations the field order won't make any difference!
>
> Cheers,
>
> Scott

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On Wed, 20 Nov 2002 22:00:43 -0500, "Dennis Miller"
<dhm### [at] attbicom> wrote:

>Thanks Scott. The guys at Canopus (makers of Procoder) told me that even if
>I hadn't used fields in POV, that I should render my uncompressed AVI (from
>a Targa sequence) using upper if I wanted the smoothest motion on a TV.
>Of course when I send this work out, I never know what the viewer will have
>on the other end, which is yet another pain.
>But the bottom line is, if I do render with fields, will that produce even
>better TV viewing than not using fields? I can't honestly say that there is
>currently a problem (no fields in POV to no fields in Premiere to no fields
>on the DVD), but would there be a clear advantage to using fields if the
>ultimately outcome were to be a TV screen?
>thanks,
>d.

Hi Dennis,

Rendering without fields doesn't create a problem - it just means that
you're not getting the smoothest motion possible. I must admit I'm
baffled as to why Canopus say you should still render the AVI using
fields to get the smoothest motion even if you didn't use fields in
POV.

If the target device is a TV then, personally, I would use fields when
creating animations. Beware that POV will take twice as long to render
the frames because it creates two files per frame -  one for each
field. You will need to combine the two files into a single
field-rendered frame to get the desired result. (It's been on my mind
for a while to patch POV to output proper field-rendered frames ...
I'll get round to it one day 8o)

The only way for you to decide if you want to use fields in POV is to
try it and see how it looks on your TV. I think you'll be impressed
with the results.

Cheers,

Scott

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On Fri, 22 Nov 2002 20:15:24 -0500, "Dennis Miller"
<dhm### [at] attbicom> wrote:

>Thanks Scott. And at what stage do I need to combine the two fields (and how
>is that done?). My work flow is
>Pov - Targa files ==> Premiere - uncompressed AVI ==> Canopus - MPEG2 ==>
>DVD
>
>or it could be straight out to DV from Premiere.
>
>Best and thanks again,
>D.
>
Hi Dennis,

I'm not familiar with Premiere (I use Vegas Video) but you need to
combine them before you create the AVI.

I'm downloading the Premiere demo now (hurrah for broadband!) - I'll
let you know if I found out.

Scott

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On Sat, 23 Nov 2002 12:08:03 +0000, Scott Moore <noo### [at] nospamcom>
wrote:

>I'm downloading the Premiere demo now (hurrah for broadband!) - I'll
>let you know if I found out.
>
>Scott

OK.

You'll need to render a non-interlaced AVI in Premiere using the files
generated by POV's field rendering options - basically this will
contain two image files for each 'frame'.

When you have the AVI you need to put that in a new Premiere project
and then set the interlace properties for that AVI clip as Interlace
Consecutive Frames.

Render a new AVI using this and you should have a properly interlaced
AVI.

The stuff below is cut and pasted from the Premiere help files.

---Premiere Help---
To specify field processing options for a clip:

1 Select a clip in the Timeline.

2 Choose Clip > Video Options > Field Options.

3 <snip>

4 Click one of the following Processing Options:

 <snip>
Select Interlace Consecutive Frames to convert pairs of
progressive-scan (noninterlaced) frames into interlaced fields. This
option is useful for converting 60-fps progressive-scan animations
into 30-fps interlaced video, because many animation applications
don't create interlaced frames.
---Premier Help---

Cheers,

Scott

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