title: Mosaic view RTSP Streaming on RPI using gstreamer gearated from VLC
body: <p>I am working on developing an application to get a mosaic view of a player on RPI(raspberry pi with raspbeain OS) which can play RTSP Streaming generated from vlc player from my x86 machine with Ubuntu.</p>
  
  <p>I have installed Gstremaer-1.0 and currently able to play one view of RTSP steaming (successfully)in full screen using this command generated by vlc please refer 1st screen shot.
  <img src="https://i.stack.imgur.com/KfdTz.png" alt="Sucesfuly able to play one screen rtsp streaming on rpi"></p>
  
  <p><code>gst-launch-1.0 rtspsrc location=rtsp://192.168.1.65:8554/test ! rtph264depay ! h264parse ! omxh264dec ! autovideosink</code></p>
  
  <p>But when i go for four screen mosaic view using below command (got this command after some googling around),</p>
  
  <p><code>gst-launch-1.0 -vvv videomixer name=mix  rtspsrc location=rtsp://192.168.1.65:8554/test1 ! 'video/x-h264,framerate=(fraction)50/1,width=640,height=480' ! rtph264depay ! h264parse ! omxh264dec ! mix. rtspsrc location=192.168.1.65:8554/test1 ! 'video/x-h264,framerate=(fraction)50/1,width=640,height=480' ! rtph264depay ! h264parse ! omxh264dec ! mix.rtspsrc location=192.168.1.65:8554/test1 ! 'video/x-h264,framerate=(fraction)50/1,width=640,height=480' ! rtph264depay ! h264parse ! omxh264dec ! mix.rtspsrc location=192.168.1.65:8554/test1 ! 'video/x-h264,framerate=(fraction)50/1,width=640,height=480' ! rtph264depay ! h264parse ! omxh264dec ! mix.</code></p>
  
  <p>it gives me an error attached with below screenshot</p>
  
  <p>so what is there that i am missing here or is there another way to do this ?</p>
  
  <p>Any help on this topic would be appreciable.
  Thank You !
  <img src="https://i.stack.imgur.com/uKB0N.png" alt="Mosaic view RTSP Error log using gstreamer"></p>