Hi All,
I have been playing around with streaming a display to the i.MX8M using H.264, and the pipeline works until I use the hardware decoder, the vpudec element. I have changed the source to a test source, and this works, and I have changed the decoder to avdec_h264, and this works.
The client side pipeline is:
gst-launch-1.0 -v ximagesrc ! video/x-raw,framerate=50/1 ! queue! videoscale ! video/x-raw,width=1080,height=720 ! videoconvert ! queue ! x264enc tune=zerolatency bitrate=500 ! rtph264pay ! queue ! udpsink port=5000 host=192.168.1.254
The host side:
gst-launch-1.0 -v udpsrc port=5000 ! "application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, payload=(int)96" ! queue ! rtph264depay ! h264parse ! vpudec ! videoconvert ! autovideosink sync=false
Running with GST_DEBUG=2, the Following error occurs repeatedly:
ERROR: ACCESS UNIT BOUNDARY CHECK
0:00:20.489915577 3504 0x38972370 WARN vpu_dec_object gstvpudecobject.c:1461:gst_vpu_dec_object_decode:<vpudecobject0> Dropped video frame before VPU init ok!
Where this warning line doesn't point to the error in the code, but an assignment of a boolean; having looked through the source code, it looks as if there could be an under run happening, but I'm not sure how to resolve this issue.
This is running a bare lite-image yocto image, without wayland or X window server installed. (https://github.com/Avnet/meta-maaxboard/tree/sumo)
If you can point me in the right direction of the cause, I would more than grateful.
Kindly,
Edwin
