Hi Guanqiong Xie,
I play this command on Yocto 1.8
gst-launch-1.0 playbin uri=file:///run/media/sda/wetransfer-fd47c1/mpeg2sample.mpg video-sink="imxvideoconvert_ipu rotation=0 ! overlaysink overlay-top=0 overlay-left=0 overlay-width=640 overlay-height=480 display=:0"
The result is
Black zone is full screen and video is still not started at [0,0] , one video is maybe at [0, 10] and another one is at [5, 0].
and are there any solutions to play video on windows mode of black zone, not full screen ?