Video component arithmetics

Matthew Eshleman matthew at
Wed Dec 5 06:50:39 PST 2012

Here are some links I found by googling "alpha gstreamer" or "alpha
blending gstreamer", perhaps they will help some...   I guess the "alpha",
"videomixer" elements will be the most important for you to review further.

Good luck!


On Mon, Dec 3, 2012 at 3:06 PM, Corneliu Ticu <corneliu.ticu at>wrote:

> Hi everybody,
> Is there any possibility to do simple video channel arithmetics with a
> gst-launch command?
> I would like to add a 420p video to another one.
> Like a transparent watermark.
> Thanks
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at

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