hardware acceleration mppvideodec

[willosonico 1]

hi to all, i'm trying to decode an rtsp stream with this gstreamer pipeline

gst-launch-1.0 rtspsrc location=rtsp://192.168.1.12:554/h264Preview_01_sub latency=0
! rtph264depay
! h264parse
! mppvideodec
! videoconvert
! fpsdisplaysink

but it go SIGSEGV

mpp[27539]: mpp_rt: NOT found ion allocator
mpp[27539]: mpp_rt: found drm allocator
mpp[27539]: mpp: deprecated block control, use timeout control instead
mpp[27539]: h264d_api: is_avcC=1
Caught SIGSEGV

it works with avdec_h264 instead of mppvideodec, but is hardware accelerated? it seems so slow

thankyou