Definition of PX2 image timestamp

[shayNV]

Hi @cjluo,
following the documentation link on my previous comment, regarding what is the source of NvMediaGlobalTime:

NvMediaIPPManagerSetTimeSource api is used for the client application to establish a callback function to provide an absolute global time. When a frame is received by the capture component, it calls this function to get the absolute global time and stores this timestamp to the image.
If the application does not establish a callback function, NvMedia IPP uses the kernel based timestamp obtained from ktime_get_ts() function to get the clock monotonic time.

also, please consider going through these topics:

Questions about Frame Sync Signal

Hi, I’ve learnt that Frame Sync Signal for cameras are generated by Xavier SoC. My questions are: How Xavier generates the signal? Is it synced with other source like system clock? What’s the frequency of frame sync signal? Can we set that? Thanks.

Question about latency on timestamping

・GMSL Camera Do you have any information about time lag between shooting time and its timestamp time? I am going to use IMX390 as GMSL camera, but other cameras’ information is okay. ・Aurix CAN Do you have any information of processing time from packet reception to time stamp marking? What is the mechanism of the hardware time stamp used on the Aurix CAN? What is the difference between software timestamp and hardware timestamp? Thank you.

if the above does not answer your question, can you elaborate on your challenge that you want to solve?