[Mlt-devel] Posible bug with transition composite - wrong colours.

[<ija...@li...>]

I'm having a problem with transition composite, blending a PNG image  
with transparency to a solid background. I'm sending a small C++  
program that shows the problem.

I set up a multitrack with two tracks and added a composite transition  
to blend track 1 to track 0. I loaded an image producer for the  
background and another for the image that blends to the back. While  
running, looks like colours are wrong.

The foreground image has a semitransparent black box that should blend  
with background. You will notice a violet line 1px wide near the left  
edge of the box and another green line 1px wide near the right edge of  
the box. Doing the same composition in GIMP shows no lines in the edges.

There is a Makefile to build the example, a c++ source and the 2  
images in the attachment.

Best regards,
Ignacio Jaureguiberry.