Wireshark · Wireshark-dev: Re: [Wireshark-dev] Feature Request for EDITCAP - Selecting by IP Address and Port Number

[Bill Meier <wmeier@xxxxxxxxxxx>]

Bill Meier wrote:
> >  What I need to do is to be able to extract out a specific VoIP call using
> > UNISTIM that spans multiple capture files based on IP Address and
> > Source and/or Destination Port and possible a within a specific time frame.
>
> Altho I haven't tried this, I think the following should work:
>
> tshark -r <input file> -R <read filter> -f <output file>
>
> (You might need to write a script to run tshark on each of multiple 
> files and then use mergecap to combine the output files).
>
> See the tshark help or manpage for additional information.

I guess not (altho the error message is a bit weird):

    Only read filters, not capture filters, can be specified when
    reading a capture file.