timestampt incorrect

[ssh1375]

i have basler ace 1920 um camera,the camera is in the front of cornomter with millsecond percision,the chunk timestampt is 40 millisecond gap between each frame but real image shows frames gap is not as same as chunk timestamp to be the same(fps is 25 and chunke timestamp gap is 40 msc),the gap between each image in reality is 10,5,60 and sometime 31,what is have to do?
i have real time application for measure speed of car then i need real timestampt of frame.
would you guy help me?

[Neel1302]

@ssh1375 This may have to do with the mapping between the ticks reported by the timestamp to the time elapsed.

See #38 and #38 (comment) to see if that helps.