Fiz um grande esforço para colocar meu vídeo no meu QWidget.

É necessário saber que apenas pias de sobreposição podem ser usadas para isso. Mas xvimagesink e ximagesink estão no x11 e eu uso a plataforma wayland no i.MX8. Então, eu tentei usar o playbin como dito emUse playbin

root@imx8mqevk:/opt# gdb ./SimpleGStreamer
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Reading symbols from ./SimpleGStreamer...done.
(gdb) r
Starting program: /opt/SimpleGStreamer 
warning: File "/lib/libthread_db-1.0.so" auto-loading has been declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-load".
To enable execution of this file add
    add-auto-load-safe-path /lib/libthread_db-1.0.so
line to your configuration file "/home/root/.gdbinit".
To completely disable this security protection add
    set auto-load safe-path /
line to your configuration file "/home/root/.gdbinit".
For more information about this security protection see the
"Auto-loading safe path" section in the GDB manual.  E.g., run from the shell:
    info "(gdb)Auto-loading safe path"
warning: Unable to find libthread_db matching inferior's thread library, thread debugging will not be available.
Using Wayland-EGL
[New LWP 4449]
[New LWP 4450]
[New LWP 4451]
[New LWP 4452]

====== AIUR: 4.3.4 build on Apr 18 2018 09:53:45. ======
    Core: MPEG4PARSER_06.13.06  build on Feb  6 2018 07:43:39
 file: /usr/lib/imx-mm/parser/lib_mp4_parser_arm_elinux.so.3.2
------------------------
    Track 00 [video_0] Enabled
    Duration: 0:03:34.280733000
    Language: und
    Mime:
    video/x-h264, parsed=(boolean)true, alignment=(string)au, stream-format=(string)avc, width=(int)1920, height=(int)1012, framerate=(fraction)30/1, codec_data=(buffer)01640028ffe1001d67640028acd100780207e7c05a808080a000007d20001d4c01e306224001000468ebef2c 
------------------------
[New LWP 4453]
[New LWP 4454]
[New LWP 4455]
[New LWP 4456]
[New LWP 4457]
[ 4276.403325] alloc_contig_range: [4ff00, 50200) PFNs busy
[ 4276.409235] alloc_contig_range: [50000, 50300) PFNs busy
[ 4276.415030] alloc_contig_range: [50100, 50400) PFNs busy
====== VPUDEC: 4.3.4 build on Apr 18 2018 09:53:54. ======
    wrapper: 3.0.0 (VPUWRAPPER_ARM64_LINUX Build on Apr 17 2018 10:33:38)
    vpulib: 1.1.1
    firmware: 1.1.1.65535
[New LWP 4458]

Thread 8 "gstglcontext" received signal SIGSEGV, Segmentation fault.
[Switching to LWP 4455]
0x0000ffffb5d6bf78 in ?? () from /usr/lib/libwayland-client.so.0
(gdb) bt
#0  0x0000ffffb5d6bf78 in ?? () from /usr/lib/libwayland-client.so.0
#1  0x0000ffff900a35e0 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
(gdb)

Comando Pipeline

gst-launch-1.0 playbin uri="file:///opt/test.mp4" works fine on the board.

E se eu comentar o comando overlay da janela no códigogst_video_overlay_set_window_handle (GST_VIDEO_OVERLAY (pipeline), xwinid);, o aplicativo criará uma nova janela e iniciará a reprodução do vídeo. Mas se eu descomentá-lo, iria para o acidente.

Alguma maneira de resolvermos isso? Desde já, obrigado :)