Hi,
I've been writing an application that uses a Quartz composition with
a published image input to process an image and display it to the
screen. This image can be either from another Quartz composition or
a movie.
I am currently using the Affine Transform patch to scale and
translate the image in my Quartz composition. This works fine when
using another Quartz composition as an input, but when I pass the
output of a Quicktime movie into it it gains a thin green border
around the image.
Does anyone know why I am having this problem, and how I should go
about fixing it?
Here's a little more information about my situation:
I'm using the QTVisualContextCopyImageForTime function to retrieve my
image from the movie file.
I've used the QTOpenGLTextureContextCreate function to create my
visual context.
When I use the QTPixelBufferContextCreate function to create my
visual context I don't have the green line problem, but I don't want
to have the frame stored in main memory.
I only have the problem when I use the Affine Transform patch, using
the Lanczos Scale Transform patch doesn't have the green lines, but I
can't use this for performance reasons.
Thanks in advance for any help anyone can give. This problem has
been slowly driving me mad for the last few days.
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