Ruby Forum Ruby-Gnome 2 > how to manipulate a alpha element

Hello Everyone,
im using gstreamer with ruby and i mix two video streams.
the mixing is working fine now.

now i want to add aplha support !

first i create the element this works fine,too ...

@alpha = Gst::ElementFactory.make('alpha')
@pipeline.add @alpha

then i want to set the alpha mehtod on custom and this is not working ..

 @alpha.set_property("method", "3")
 @alpha.method = "3"

i think the method/function  aplha#method expect a "Gst::ElementAlpha"
ENUM element and i think this dosent exists in the bingings ..

right ?
is there a hint how i can set @alpha.method = "3"  ?



gst-inspect aplha output for the mehtod function
################################################
 method              : How the alpha channels should be created
                        flags: readable, writable
                        Enum "GstAlphaMethod" Default: 0, "set" Current:
0, "set"
                           (0): set              - Set/adjust alpha
channel
                           (1): green            - Chroma Key green
                           (2): blue             - Chroma Key blue
                           (3): custom           - Chroma Key on
target_r/g/b
#######################################################################



thanks ahead
& best regards

Philipp

Hi,

In <86fd08ad80486e47eb30c1e96f1cd2d5@ruby-forum.com>
  "[ruby-gnome2-devel-en] how to manipulate a alpha element" on Fri, 6 
Jun 2008 15:31:45 +0200,
  Philipp Goetzinger <ruby-forum-incoming@andreas-s.net> wrote:

> then i want to set the alpha mehtod on custom and this is not working ..
> 
>  @alpha.set_property("method", "3")
>  @alpha.method = "3"

@alpha.set_property("method", 3)


Thanks,
--
kou

Kouhei Sutou wrote:
> Hi,
> 
> In <86fd08ad80486e47eb30c1e96f1cd2d5@ruby-forum.com>
>   "[ruby-gnome2-devel-en] how to manipulate a alpha element" on Fri, 6 
> Jun 2008 15:31:45 +0200,
>   Philipp Goetzinger <ruby-forum-incoming@andreas-s.net> wrote:
> 
>> then i want to set the alpha mehtod on custom and this is not working ..
>> 
>>  @alpha.set_property("method", "3")
>>  @alpha.method = "3"
> 
> @alpha.set_property("method", 3)
> 
> 
> Thanks,
> --
> kou

Hello kou,

its working, sorry it was a stupid fault .. ;-)

thank you!

Philipp