Mosaic View 4 RTSP Streams to one RTSP Stream help needed

[strab]

this solution throws an error too....

gst-launch-1.0 -v \
videomixer name=mix \
sink_0::xpos=0 sink_0::ypos=0  sink_0::alpha=0
sink_1::xpos=0 sink_1::ypos=0 
sink_2::xpos=320 sink_2::ypos=0 
sink_3::xpos=0 sink_3::ypos=240 
sink_4::xpos=320 sink_4::ypos=240 
uridecodebin uri=rtsp://uri ! videoscale ! video/x-raw,width=320,height=240
\ ! mix.sink_1 \
uridecodebin uri=rtsp://uri ! videoscale ! video/x-raw,width=320,height=240
\ ! mix.sink_2 \
uridecodebin uri=rtsp://uri ! videoscale ! video/x-raw,width=320,height=240
\ ! mix.sink_3 \
uridecodebin uri=rtsp://uri ! videoscale ! video/x-raw,width=320,height=240
\ ! mix.sink_4 \
mix. ! queue ! x264enc ! rtph264pay name=pay0 pt=96 ! videoconvert !
uridecodebin uri=rtsp://127.0.0.1:8554/test ! autovideosink sync=false



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