Ever wondered what is inside a .APPV file of your App-V 5.x package ?
The .appv file is simply a 'compressed folder' so just rename the .appv file to .zip and open it in Windows Exploerer or your favourite ZIP application.
In App-V 5 the old SFT format is gone, replaced by a new AppV format. The SFT format was created for the original SoftGrid product in order to support streaming on a block, rather than file, basis. The .Appv format also make the 4GB limit of the SFT file history.