Suppose you buy a Canon digital camera and bring it to a picnic. You record a video, then shoot a photo, then a second video and a second photo. You've just generated 4 files:

Unfortunately, once you download these files to your computer they won't show up in chronological order because most applications sort files by filename:

Stamp fixes this by renaming your files:

The new filenames sort in chronological order because they begin with a timestamp:

The original filename prefixes (IMG, MVI, etc.) and file numbers (0001, 0002, etc.) are preserved so you don't lose any information. As an added benefit, you can now see when each photo or video was recorded just by looking at the filename.

Suppose your friend brings her Sony camera to the same picnic. She sees you using your camera, then decides to shoot a couple photos and videos of her own:

After downloading, her pictures won't sort chronologically either:

And things get even worse if you combine her files with yours:

Stamp works with any mix of cameras and file types:

In Windows Explorer, in most image viewer applications, and in most File:Open dialogs, files are usually sorted alphabetically by filename. You have the option of sorting by one of the Windows File System dates, but for various reasons none of these work consistently and reliably for all file formats in all situations:

The bottom line is that only filename dates work consistently and reliably in all situations. Once you add timestamps to the beginning of your filenames, you'll be able to sort any mix of photos and videos chronologically whenever you see a list of files. And the timestamps will remain intact and unchanged no matter how many times you edit files, move them, copy them, or send them via email.