Sometimes you need to merge several capture files into one. For example, this can be useful if you have captured simultaneously from multiple interfaces at once (e.g. using multiple instances of Wireshark).
There are three ways to merge capture files using Wireshark:
mergecaptool from the command line to merge capture files. This tool provides the most options to merge capture files. See Section D.8, “mergecap: Merging multiple capture files into one” for details.
This lets you select a file to be merged into the currently loaded file. If your current data has not been saved you will be asked to save it first.
Most controls of this dialog will work the same way as described in the “Open Capture File” dialog box. See Section 5.2.1, “The “Open Capture File” Dialog Box” for details.
Specific controls of this merge dialog are:
This is the common Windows file open dialog with additional Wireshark extensions.
This is the Qt file open dialog with additional Wireshark extensions.