forwarded screen stutters every several seconds

[henryco]

Hi everybody ,

I eventually managed to get the optimal quality and latency for both sound
and video toward my pi2 with the following pipelines :
sender side: 

gst-launch-1.0 -v ximagesrc use-damage=false ! queue  ! videoflip method=5 !
videoconvert  ! videoscale \
!
"video/x-raw,framerate=(fraction)30/1,format=(string)I420,force-aspect-ratio=(gboolean)true"
! queue \
! x264enc pass=pass1 tune=zerolatency  speed-preset=veryfast 
intra-refresh=true ! queue \
! rtph264pay  pt=96 ! udpsink host=192.168.1.11 port=5000 
gst-launch-1.0 -v pulsesrc  ! audioconvert ! rtpL16pay ! udpsink
host=192.168.1.19 port=5500

receiver side:
gst-launch-1.0 -v udpsrc port=5000 caps="application/x-rtp,
media=(string)video, clock-rate=(int)90000, 
encoding-name=(string)H264" ! rtph264depay ! queue ! h264parse ! queue !
omxh264dec ! 
queue ! eglglessink
gst-launch-1.0 -v udpsrc buffer-size=10000 port=5500 \
caps="application/x-rtp, media=(string)audio, clock-rate=(int)44100,
encoding-name=(string)L16, encoding-params=(string)2, channels=(int)2,
payload=(int)96" \
! rtpL16depay ! waveparse ! audioconvert ! alsasink


The problem i have now is that i dont manage to send only one window with
ximagesrc xid= ...
it did work but only once just sending the window to autovideosink for
example:

gst-launch-1.0 -v ximagesrc xid=0x5e00001 ! videoconvert ! autovideosink


but then for other trials it always failed with message:

X Error of failed request:  BadMatch (invalid parameter attributes)
  Major opcode of failed request:  131 (MIT-SHM)
  Minor opcode of failed request:  4 (X_ShmGetImage)
  Serial number of failed request:  53
  Current serial number in output stream:  53

Could someone help ?

thank you



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