Video rendering on qtwidget using gstreamer

[himanshu_bhavani]

Hi Team,

I want to render video on qtwidget using gstreamer.

For testing purpose I an running below gstreamer pipeline on my ubuntu mcahine.

gst-launch-1.0 videotestsrc ! qt5videosink

Here qt5videosink is a gstreamer plugin that is used to render video on qt widget.

But when I am running the above gstreamer pipeline, It is running but not opening any output widget.

Logs : 

User-2:~$  gst-launch-1.0 -v videotestsrc ! qt5videosink
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
/GstPipeline:pipeline0/GstVideoTestSrc:videotestsrc0.GstPad:src: caps = video/x-raw, format=(string)BGRA, width=(int)320, height=(int)240, framerate=(fraction)30/1, multiview-mode=(string)mono, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive
/GstPipeline:pipeline0/GstQtVideoSink_qt5:qtvideosink_qt5-0.GstPad:sink: caps = video/x-raw, format=(string)BGRA, width=(int)320, height=(int)240, framerate=(fraction)30/1, multiview-mode=(string)mono, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
Redistribute latency...
New clock: GstSystemClock
^Chandling interrupt.
Interrupt: Stopping pipeline ...
Execution ended after 0:00:05.508780834
Setting pipeline to NULL ...
Freeing pipeline ...

Someone please help me here how can I achieve this?

Thanks.

[Sanket_Parekh]

Hello @himanshu_bhavani,

I hope you are doing well.

I have a few queries to ask, Please find them below.

Which i.MX EVK/Custom board are you using?
What Linux BSP are you using?
Please share the console logs along with the sequence of the command you run.
Please also share the environment details. (i.e. display number and so on..)

Thanks & Regards,
Sanket Parekh

[himanshu_bhavani]

Hi @Sanket_Parekh ,

For testing purpose I am trying first on my Ubuntu Host Machine ( Kernel : 6.2.0-35-generic). 

Environment Variables : 

QT_ACCESSIBILITY=1
COLORTERM=truecolor
XDG_CONFIG_DIRS=/etc/xdg/xdg-ubuntu-xorg:/etc/xdg
SSH_AGENT_LAUNCHER=gnome-keyring
NVM_INC=/home/himanshu/.nvm/versions/node/v18.10.0/include/node
XDG_MENU_PREFIX=gnome-
GNOME_DESKTOP_SESSION_ID=this-is-deprecated
GTK_IM_MODULE=ibus
LANGUAGE=en_IN:en
GNOME_SHELL_SESSION_MODE=ubuntu
SSH_AUTH_SOCK=/run/user/1000/keyring/ssh
XMODIFIERS=@im=ibus
DESKTOP_SESSION=ubuntu-xorg
GTK_MODULES=gail:atk-bridge
PWD=/home/himanshu/qt-rendering-test
LOGNAME=himanshu
XDG_SESSION_DESKTOP=ubuntu-xorg
QT_QPA_PLATFORMTHEME=qt5ct
XDG_SESSION_TYPE=x11
GPG_AGENT_INFO=/run/user/1000/gnupg/S.gpg-agent:0:1
SYSTEMD_EXEC_PID=12091
XAUTHORITY=/run/user/1000/gdm/Xauthority
WINDOWPATH=2
HOME=/home/himanshu
USERNAME=himanshu
IM_CONFIG_PHASE=1
LANG=en_IN
LS_COLORS=rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=00:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arc=01;31:*.arj=01;31:*.taz=01;31:*.lha=01;31:*.lz4=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.tzo=01;31:*.t7z=01;31:*.zip=01;31:*.z=01;31:*.dz=01;31:*.gz=01;31:*.lrz=01;31:*.lz=01;31:*.lzo=01;31:*.xz=01;31:*.zst=01;31:*.tzst=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.alz=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.cab=01;31:*.wim=01;31:*.swm=01;31:*.dwm=01;31:*.esd=01;31:*.jpg=01;35:*.jpeg=01;35:*.mjpg=01;35:*.mjpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.webp=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.m4a=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.oga=00;36:*.opus=00;36:*.spx=00;36:*.xspf=00;36:
XDG_CURRENT_DESKTOP=ubuntu:GNOME
VTE_VERSION=6800
GNOME_TERMINAL_SCREEN=/org/gnome/Terminal/screen/bac183f9_0e3d_46ad_adef_afc3e4485090
NVM_DIR=/home/himanshu/.nvm
LESSCLOSE=/usr/bin/lesspipe %s %s
XDG_SESSION_CLASS=user
TERM=xterm-256color
LESSOPEN=| /usr/bin/lesspipe %s
USER=himanshu
GNOME_TERMINAL_SERVICE=:1.107
DISPLAY=:0
SHLVL=1
NVM_CD_FLAGS=
QT_IM_MODULE=ibus
QT_DEBUG_PLUGINS=1
LD_LIBRARY_PATH=/opt/qtX86/lib/:
XDG_RUNTIME_DIR=/run/user/1000
XDG_DATA_DIRS=/usr/share/ubuntu-xorg:/usr/share/gnome:/home/himanshu/.local/share/flatpak/exports/share:/var/lib/flatpak/exports/share:/usr/local/share/:/usr/share/:/var/lib/snapd/desktop
PATH=/home/himanshu/.nvm/versions/node/v18.10.0/bin:/home/himanshu/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/snap/bin
GDMSESSION=ubuntu-xorg
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
NVM_BIN=/home/himanshu/.nvm/versions/node/v18.10.0/bin
QT_PLUGIN_PATH=/usr/lib/x86_64-linux-gnu/qt5/plugins
OLDPWD=/home/himanshu/qt-rendering-test/build
_=/usr/bin/printenv