GSREAMER-OMX multivideos

[Gofrane]

I have tried this pepiline in oroder to display multivideos ( using
GSREAMER-OMX)

*gst-launch-1.0 -e \ 
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=200 sink_2::ypos=0 \ 
        sink_3::xpos=0   sink_3::ypos=100 \ 
        sink_4::xpos=200 sink_4::ypos=100 \ 
    ! xvimagesink \ 
videotestsrc pattern="black" \ 
    ! video/x-raw,width=400,height=200 \ 
    ! mix.sink_0 \ 
filesrc location=/home/pi/big_buck_bunny_480p_h264.mov  \
! qtdemux ! queue  ! h264parse ! omxh264dec   \ 
    ! video/x-raw,width=200,height=100 \ 
    ! mix.sink_1 \ 
filesrc location=/home/pi/big_buck_bunny_480p_h264.mov \
 ! qtdemux ! queue  ! h264parse ! omxh264dec    \ 
    ! video/x-raw,width=200,height=100 \ 
    ! mix.sink_2 \ 
filesrc location=/home/pi/big_buck_bunny_480p_h264.mov \
 ! qtdemux ! queue ! h264parse ! omxh264dec  \ 
    ! video/x-raw,width=200,height=100 \ 
    ! mix.sink_3 \ 
filesrc location=/home/pi/big_buck_bunny_480p_h264.mov \
 ! qtdemux ! queue ! h264parse ! omxh264dec  \ 
    ! video/x-raw,width=200,height=100 \ 
    ! mix.sink_4 \*

but it has dispalyed this error

*
ERROR: pipeline could not be constructed: syntax error.
 videomixer: command not found
 sink_0::xpos=0: command not found
sink_1::xpos=0: command not found
sink_2::xpos=200: command not found
 sink_3::xpos=0: command not found
sink_4::xpos=200: command not found
xvimagesink: command not found
 videotestsrc: command not found
 video/x-raw,width=400,height=200: No such file or directory
 command not found
 filesrc: command not found
 video/x-raw,width=200,height=100: No such file or directory
 mix.sink_1: command not found
 filesrc: command not found
video/x-raw,width=200,height=100: No such file or directory
 mix.sink_2: command not found
 filesrc: command not found
 video/x-raw,width=200,height=100: No such file or directory
 mix.sink_3: command not found
 filesrc: command not found
 video/x-raw,width=200,height=100: No such file or directory
:mix.sink_4: command not found*





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