NEW YORK — If you think Instagram snapshots of lunch plates, drooling babies and random desk objects are exciting, just wait until your friends start posting 15-second videos.

You won't have to wait long. On Thursday, Facebook's popular Instagram photo-sharing app added a video feature. Much like its competitor Vine, which is owned by Twitter, Instagram now lets you record and share short videos using a few taps of a finger on a mobile device.

Most people don't do this. Vine has just 13 million users (one-tenth of Instagram's user base), and no other video-sharing apps have attracted mass appeal. Part of the reason: technical limitations. Instagram co-founder Kevin Systrom said during the service's unveiling that the video feature was initially left out of Instagram because the "speed, simplicity and beauty" the creators strived for in the app "were definitely possible with photos — but it was really hard for video."

It's easier now. Internet connections have become faster and mobile phones are snappier and equipped with better cameras. And as Systrom promised, Instagram's video feature is certainly simple. Download the latest version on your iPhone or Android device. Open it and tap the camera icon on the bottom of the screen. This will take you to a new screen with a video camera icon. Another tap and you're ready to go.

You can record whatever your little heart desires. I opted for a shaky panorama of the newsroom with close-ups on coworkers' faces, which I deleted. Another video featuring different types of hot sauce and other things on my desk was better received by my friends on Instagram.

The videos don't have to be shot in one take. Lift your finger and the recording stops until you tap the icon again. Writing about the feature is actually more complicated than using it.

The finger-tap recording feature that Vine fans are familiar with works well with Instagram, especially for patient videographers. Tap-stop-tap your way through recording a puppet show or a piece of cake being eaten and you'll have yourself a 15-second stop-motion animation clip — or shorter if you wish.

Instagram's video tool lets you delete individual video segments, which is nice. The Vine app is all or nothing.

One of my biggest complaints with Vine is that many of the videos I took using the app are shaky. You try running after friends in the alleyways of Venice while shooting a video of the scenery with your phone. Shaky. To address problems like this, Instagram has added a "cinema" feature that stabilizes the videos. It only works on the iPhone 4S or higher, which is unfortunate for me and my cracked iPhone 4. The feature is not yet available on Android. I should probably get a new phone.

As for speed, videos my friends posted on Instagram loaded fairly fast, though not as quick as photos. Sometimes they wouldn't play, possibly due to a less-than-ideal connection in our office. A small video camera icon differentiates the videos from photos on Instagram. You can view a video by tapping its icon. The problem is that tapping is also a shortcut for "liking" a video or photo. This is how I "liked" one of my own boring videos and how a coworker "liked" another undeserving video by a former high school classmate. And still, they wouldn't play.

And that's probably just as well. Systrom's third aspiration, beauty, is harder to gauge. Since it's only been a few hours since video's launch on Instagram, I'm withholding judgment. Hopefully my friends will take the same sort of care and artistic curation with their videos as they do with their snapshots —which, of course, means I can expect tons of videos of babies crawling, dinner dishes waiting to be eaten, cocktails getting shaken, bunnies munching on parsley and waves crashing on the beaches of Greece.

Actually that doesn't sound so bad. The beauty of Instagram is that it offers a glimpse into people's lives that's difficult to put into words.