Pack and Show-SWF Options File > Pack and Show > Select a MPEG-4 or SWF file > Next Pack and Show creates a Windows-executable file users can double-click to unpack the file and play the video. The SWF Options screen shows all files included in the Pack and Show file. You need all the files listed to play the MPEG-4 or SWF video. Click Next to continue the Pack and Show Wizard.