DVInfo is a tool to get information about DV-Video files. Those files can contain a lot more information which may be useful.
Usually this information is not easily accessible as it is encoded into the DV stream. For example, DVInfo can retrieve the original date and time of the recording., the original time code on the tape or even some of the camera settings used during recording of the footage.
Dependent on the software and equipment used to transfer your source material, the DV content can be in different container formats. DVInfo supports all commonly used containers, i.e. DV Streams (.dv), QuickTime (.mov) and even AVI files if you have transferred your videos on a PC.
Of course not all DV-Video files contain all the information. Computer generated content will never contain any camera settings for example. If you have used a video editing software and rendered your video to a new DV file most of the original information is lost.
The free version of DVInfo will not show you the recording date and time. However it will show you if they are present or not. So you can use this free version to check, if your files actually contain those additional information.
