How can I get exact systemtime timestamp with gstreamer

Robotics & Edge Computing Jetson & Embedded Systems Jetson Nano
1

Hi all,

I’m trying to get exact timestamp with my gstreamer.
When I check dts and pts with below command, it started when I enter command.

gst-launch-1.0 -ve v4l2src do-timestamp=true device=/dev/video1 ! “video/x-raw, format=(string)UYVY, width=(int)1920,height=(int)1080” ! nvvidconv ! “video/x-raw(memory:NVMM), format=(string)I420” ! fakesink silent=false

/GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = chain ******* (fakesink0:sink) (976 bytes, dts: 0:00:06.179406338, pts: 0:00:06.146063109, duration: 0:00:00.033333333, offset: 174, offset_end: 175, flags: 00000000 , meta: none) 0x7f8c017510

As I checked nvidia vi files, it set timestamp with ‘set_timestamp’ function in channel.c.
Can I get that timestamp with my gstreamer application?

Thanks in advance.