[gst-devel] import image with transparent background

[Terry Leung]

Hi,

I've tried to use png image with transparent background and it doesnt work

here is part of my pipeline: filesrc !  gdkpixbufdec !
ffmpegcolorspace ! videomixer
I also have another src for the videomixer with zorder value lower

any plugin that can read a image and output a rgba/ayuv video?


Regards,
Terry

On Jan 3, 2008 5:57 PM, Tim Müller <t.i.m at zen.co.uk> wrote:
> On Thu, 2008-01-03 at 10:41 +0800, Terry Leung wrote:
>
> Hi,
>
>
> > I am now writing a program to overlay an image on top of a video clip
> >
> > However, as I want to overlay an image with transparent background and
> > those image decoder src pad are either raw rgb or raw yuv(without
> > alpha), I want to ask how can i do that? can gstreamer support the
> > transparent feature in some type of image(like png or gif)? and how?
>
> Which image decoder exactly? What format is your image in?
>
> IIRC, gdkpixbufdec outputs RGBA if the image has an alpha channel.
>
>  Cheers
>   -Tim
>
>
>
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