Framerate on mosaic of multiple RTSP stream

[adrien Schwartzentruber]

Hello,

My goal is to display a mosaic of different RTSP stream. This is my
gst-launch command line to create this : 
gst-launch videomixer name=mixer ! queue ! ffmpegcolorspace ! autovideosink
uridecodebin uri=rtsp://localhost:8554/stream ! queue ! videoscale
add-borders=TRUE ! video/x-raw-yuv, width=200, height=200 ! videobox top=-1
left=-1 ! mixer. uridecodebin uri=rtsp://localhost:8555/stream ! videoscale
add-borders=TRUE ! video/x-raw-yuv, width=200, height=200 ! videobox top=-1
left=-200 ! mixer. uridecodebin uri=rtsp://localhost:8556/stream ! queue !
videoscale add-borders=TRUE ! video/x-raw-yuv, width=200, height=200 !
videobox top=-201 left=-1 ! mixer. uridecodebin
uri=rtsp://localhost:8556/stream ! queue ! videoscale add-borders=TRUE !
video/x-raw-yuv, width=200, height=200 ! videobox top=-201 left=-201 !
mixer.

I observed that the framerate of the display is very low (like 1 image / 2
sec).

Someone can explain to me why ? 

Thanks. 



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