I have panned the camera across my titles with good results, but I am
using 29.97 FPS NTSC so I am not sure if it is different for PAL.

On Sat, Sep 19, 2009 at 10:19 AM, Don <[email protected]> wrote:
> Dear Cinelerra users,
>
> I would like to create a horizontal scrolling of a still picture, to create a 
> DV (or MPEG2) interlaced PAL video at 25 images per second (thus 50 fields 
> per seconds, as it is an interlaced mode). The result will be seen on a PAL 
> television in interlaced mode.
>
> I have tested two methods:
> - I have used the Camera X parameters with keyframes.
> - I have also tested the Translate effect.
> The problem is that the resulting video sequence, at 25 interlaced images per 
> second, does not have 50 fields per seconds. I can see it, as there is a 
> vertical line in the still picture. With two fields in one picture, the 
> vertical line should have jaggy edges created by the interlaced two fields. 
> Unfortunately, the output of Cinelerra is a sequence of perfect, 25 images 
> per seconds, with no intermediate fields computed. This result in a 'not so 
> smooth' scrolling on the television set.
>
> I have specified in Cinelerra that the video is interlaced, and I have even 
> set interlaced flag when importing the still picture.
>
> The purpose of this is to add scrolling titles to DV video recorded during 
> the holidays. The titles are created in Inkscape and the Gimp.
>
> So I have two questions:
> 1. Is it the normal behavior of Cinelerra (not to create the two fields when 
> computing a translation at 25 images per second, interlaced)?
> 2. If not, could you please explain to me how to tell Cinelerra to compute 
> these two fields?
>
> Sincerely yours,
>
> Lionel
>
> P.-S. I use Cinelerra 2.1CV on Gentoo Linux.
>
>
>
>
>
>
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>



-- 
Thanks,
Aaron Newcomb
http://www.thesourceshow.org

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