Premiere Pro - Way to RE-interlace 59.94fps to 29.97fps?

[Guest]

Archived from groups: adobe.premiere.pro.win,rec.video.desktop (More info?)

My situation: I've got 59.94fps progressive video, and I need to
downconvert it to regular old NTSC at 29.97fps. Premiere Pro lets one
export a 59.94fps project as such. However, a quick test confirms my
suspicion: All Premiere Pro does is pick every other frame and use it
to generate BOTH FIELDS of the new 29.97fps interlaced video! It
completely ignores the fact that I have 59.94 perfectly usable frames
per second that it could use for each field. (This was confirmed by
inserting a single frame of text at frames 0:10 and 0:21, and then
importing the resulting video and seeing whether or not the text had
been rendered. The text was resident at 0:10/11 but not at 0:20/21.)

So! What I need is a plugin that will do a PROPER job of interlacing
my video, since Premiere Pro is evidently not up to the task. Anyone
have experience with something that will in fact work? Thanks.

 

[Guest]

Archived from groups: rec.video.desktop (More info?)

On 27 Jun 2004 01:56:00 -0700, retsa2@hotmail.com (Marc Brown) wrote:

>So! What I need is a plugin that will do a PROPER job of interlacing
>my video, since Premiere Pro is evidently not up to the task. Anyone
>have experience with something that will in fact work? Thanks.

Avisynth <www.avisynth.org> can do that, but it's a scripting language,
so it can be a little daunting. This script should work:

AviSource("my_video.avi")
SeparateFields()
SelectEvery(4,0,3)
Weave()

Save this script as an .avs file, open it with VirtualDub and save it as
a new avi file, using the codec of your choice. The resulting avi will
be interlaced - 29.97 fps - bottom field first. If you want upper field
first, use SelectEvery(4,1,2).

 

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On 27 Jun 2004 01:56:00 -0700, retsa2@hotmail.com (Marc Brown) wrote:

>since Premiere Pro is evidently not up to the task.

By the way, Vegas is up to the task. I just tried it.

 

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erratic <erratic@reply-to.address> wrote in message news:<4bBDc.167715$Y06.8426536@phobos.telenet-ops.be>...
> On 27 Jun 2004 01:56:00 -0700, retsa2@hotmail.com (Marc Brown) wrote:
>
> >since Premiere Pro is evidently not up to the task.
>
> By the way, Vegas is up to the task. I just tried it.

Thanks for the tips. I tried using Vegas, but there doesn't seem to be
a way of exporting _raw_ video. Although the program does let one
specify the Sony DV codec, which is nice, and another capability missing
from the much-vaunted Premiere Pro.

So I went with the Avisynth solution. It seems to have worked. But I
won't really know until I move the whole project to a DVD-R and try it
in a hardware player, because (to the best of my admittedly limited
knowledge) there is no app for the PC that allows one to review video
on a field-by-field basis. Virtualdub shows two frames but they appear
to be identical, indicating that they are not in fact the two fields of
a single frame.

 

[Guest]

Archived from groups: rec.video.desktop (More info?)

Marc Brown wrote:
> erratic <erratic@reply-to.address> wrote in message
> news:<4bBDc.167715$Y06.8426536@phobos.telenet-ops.be>...
> I tried using Vegas, but there doesn't seem to
> be a way of exporting _raw_ video.


If by "raw", you mean uncompressed, Vegas can do it. Select avi in the
"save as type" box and "default template (uncompressed)" in the template
box.

Mike

 

[Guest]

Archived from groups: rec.video.desktop (More info?)

On 27-Jun-2004, retsa2@hotmail.com (Marc Brown) wrote:

> So! What I need is a plugin that will do a PROPER job of interlacing
> my video, since Premiere Pro is evidently not up to the task. Anyone
> have experience with something that will in fact work? Thanks.

After Effects does it using the "Field Render" setting. Works great.

--
Chris

Munged email. To reply by email (each "word" a letter):
see jay bee are oh oh kay ee [AT] em ess en [DOT] see oh em

 

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On 27 Jun 2004 17:28:34 -0700, retsa2@hotmail.com (Marc Brown) wrote:

>because (to the best of my admittedly limited
>knowledge) there is no app for the PC that allows one to review video
>on a field-by-field basis.

Avisynth can do that too.

AviSource("whatever.avi")
AssumeTFF() # remove this line if your video is lower field first
SeparateFields()

This will separate the fields and play them in the correct order.
For example: 29.97i 720x480 will be played as 59.94p 720x240.
If you replace SeparateFields() with Bob() the fields will be
resized to 720x480, so then you will get 59.94p 720x480.