[gst-devel] Adding alpha or transparency to video

[Jonathan Wong]

Hi,

I forgot to mention I need it on Windows (and then Linux later).

I found this: http://pbx.mine.nu/effectv/ (a port of effectv to win32, using DirectShow no less)

I am hoping to programmatically make a video stream semi-transparent (alpha channel).

Any advice on where to start looking? Or should I mess around with a GstBuffer and see what 
effects I get from messing around? :P

Currently, I do the semi-transparent effect with DirectShow. No manipulation of video data, just 
using DirectShow API.

ved kpl wrote:
> Hi,
> 
> There are a few elements to add such effects to video.
> You can have a look at effectv.
> 
> gst-inspect effectv.
> 
> 
> On Fri, Apr 17, 2009 at 8:08 AM, Jonathan Wong <jhannwong at gmail.com> wrote:
>> Hi,
>>
>> Hope this is the right place to ask this.
>>
>> Is it possible to code a transform that adds transparency to a video stream? How do I do it?
>> GstVideoFilter? GstBaseTransform?
>>
>> Is it already done somewhere?
>>
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> 
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