GoPro Hero 4 Black Edition 4K Ultra HD Action Camera

Choppy playback is typically not a problem with the file. If your footage skips, one of these situations is likely the cause: 

1. Using an incompatible video player. Not all video players support the H.264 codec. For best results, use the latest GoPro software, available for free at gopro.com/getstarted. ;
2. The computer does not meet the minimum requirements for HD playback. The higher the resolution and frame rate of your video, the harder the computer has to work to play it back. Make sure that your computer meets the minimum requirements listed in Playback Mode. 
3. Playing a high bitrate HD video file over a low bandwidth USB connection. Transfer the file to the computer to play back. If your computer does not meet the minimum requirements, record at 720p30 with Protune off, and make sure that all other programs on your computer are closed.

In Setup mode, select Camera Reset, and then select Reset Camera Defaults. This option does not reset the Date/Time or your camera’s username and wireless password.

Make sure your GoPro is charged. To charge your camera, use the included USB cable and a computer. You can also use the GoPro Wall or Auto Charger.

Press and hold the Power/Mode button for 8 seconds to reset your camera. This reset saves all of your content and settings, and powers off your camera.

To reset the username and password to the defaults, go to Setup mode. Tap Camera Reset, and then tap Reset Wi-Fi. The camera name is reset, and the password is reset to goprohero.

The blue light indicates that Wireless is on. To turn off Wireless, press and hold the Settings/Tag button for four seconds.