absolute frame number in capture with -R ?

[Mathias Koerber <mathias () koerber org>]

I have a rather large pcap file I am trying to extract
relevant frames from using tshark.

using

# tshark -2 -n -r infile -R '(filter)' -T fields -e frame.number

yields frame-numbers starting from 1 anr continuously increasing.
So apparently this counts the frames that matched the display filter.

I would like to print the actual frame-number from the input file,
so that I can later find the frames in their original context.

How to do that?

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