BACK IN OCTOBER, Facebook announced that users would soon be able to change their profile picture from a normal image into a short looping video. This features has been rolled out slowly but its now available in for some iPhone and Android users.
How do I add or change my profile video?
You can take or upload a video of up to 7 seconds to use as your profile video. Profile videos appear at the top your profile just like a profile picture. You can currently only add a profile video from iPhone or Android.
To add a profile video from iPhone:
1. Go to your profile and tap your profile picture or video
2. TapTake a New Profile Videoto take a new video or tapUpload Video or Phototo choose a video from your phone
3. TapNext, then tap the bar at the bottom of the screen to choose a thumbnail for your video
4. TapSave
To add a profile video from Android:
1. Go to your profile and tap your profile picture or video
2. TapTake a New Profile Videoto take a new video or tapUpload Video or Phototo choose a video from your phone
3. TapNext, then tap the bar at the bottom of the screen to choose a thumbnail for your video
4. TapUse

Note that this feature is not currently available in all locations.