Understanding QOS in gstreamer

[Baby Octopus]

Hi,

If I keep the pipeline running more more time, I see PTS getting printed
occasionally such as below

[root at localhost gst-plugins-base]# gst-launch-1.0 videotestsrc is-live=1 !
videoscale qos=1 ! video/x-raw,width=32000,height=2160 ! checksumsink qos=1
sync=1
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
PTS: 0:00:00.239475936  DTS: 0:00:00.239475936
PTS: 0:00:00.272809269  DTS: 0:00:00.272809269
PTS: 0:00:00.506142602  DTS: 0:00:00.506142602
PTS: 0:00:02.106142602  DTS: 0:00:02.106142602
*PTS: 0:00:13.039475936  DTS: 0:00:13.039475936*
^Chandling interrupt.
Interrupt: Stopping pipeline ...
Execution ended after 0:03:31.494284774

~BO



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