I believe that you mean the location of the video data that was recorded by the webcam.
The folder and filename(s).
What application are you using to record webcam data? The application documentation should provide the default location and naming conventions. And probably show you how to change the default location.
Look through the application's menu: tools, options, settings, preferences, properties, and so forth. The location option may be deep down inside some window full of tabs and configurable options.
I googled "Logitec CD 270 webcam default folder" and found the following link:
http://support.logitech.com/en_hk/article/17659?product=a0qi00000069uq5AAA
Do a similar search if you are using some other video recording...