[Kdenlive-devel] My experience with Blender

Dan Dennedy dan at dennedy.org
Sun Dec 23 17:07:23 UTC 2007


another option: see images2dv-gui
http://www.kinodv.org/dcforum/dcforum?az=show_topic&forum=103&topic_id=677&mesg_id=677

On Dec 22, 2007, at 3:28 PM, Gerhard Hübner wrote:

> After I found out that Blender has a dedicated video sequence  
> editor, I
> thought it is worth the effort to try making animatesd slide shows  
> with
> it.
>
> The good news: it works, sort of, the GUI is not that bad. It is
> possible to load pictures, stretch them to the desired sequence  
> length,
> insert per-picture and picture-to-picture transition effects,  
> including
> the one that is known elswhere as "Ken Burns", i.e. zooming and  
> panning
> in the picture...
>
> The bad news: Blender downsamples every imported image to the selected
> video resolution. When I zoom into an image using the transform  
> effect,
> Blender does NOT used the original image quality but just inflates the
> pixels of the previously downsampled image!!! This ruins the whole
> function and makes it practically useless. My big multi-megapixel- 
> images
> just get squeezed to nothing and then inflated into an ugly pixelated
> mess.
>
> How sad, 10 hours of work wasted just because someone who coded this
> function didn't understand the basic mathematics of scaling, viewports
> and linear transformations...
>
> So I ended up discarding yet another tool that looked nice at first  
> but
> failed due to some very simple things not correctly implemented. On  
> the
> list of failures are also:
> - Jahshaka (spent several days to get it working, no hope)
> - Cinelerra: Editing simply doesn't work, crashes and hangs  
> frequently,
> looks abandoned.
> - Kino: solution looking for a problem
> - Slcreator: nice idea to provide GUI frontend to DVD-Slideshow, but
> loves crashing and wasting memory and is written in some Visual Basic
> derivative that no one else wants to develop with... why didn't that  
> guy
> use python, perl or TCL?
>
> Again, the mathematics and code are simple and Kdenlive looks like the
> right place where to put it but is anyone still working on it or has  
> it
> been abandoned?
>
>
> As long as the programming interface for filters in Kdenlive permitted
> working on the full-res image and not the downsampled stuff, it  
> would be
> easy to avoid the above-mentioned problem.
>
>
>
>
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