Overlaying an image on a video

[kususe]

I want to code a pipeline to overlay an image on a video. 
First I would like to understand how to implement this one and then to code
it. 
So I attemped with this: 

gst-launch filesrc location=/home/boss/test/video.mpg ! decodebin2 !
videomixer name=mix ! xvimagesink filesrc location =
/home/boss/test/image.png ! pngdec ! ffmpegcolorspace ! mix

but I got: "pipeline wrong. No element called mix"

Suggestions? 
Thanks in advance
K



--
View this message in context: http://gstreamer-devel.966125.n4.nabble.com/Overlaying-an-image-on-a-video-tp4436063p4436063.html
Sent from the GStreamer-devel mailing list archive at Nabble.com.