The extension 3GP marks video files that are mostly generated by or intended for mobile phones. This standard was developed by 3GPP for 3G UMTS phones.
Like avi or Quicktime, 3GP is a container format. It is based on the MP4 container, but was adapted to the special conditions of mobile phones. So mainly the resolutions 128 × 96, 176 × 144, 220 × 176, 320 × 240 pixels are supported.
The video and audio data may be encoded in various compression methods. Subtitles are also supported.
The videos can also be protected with a DRM-like system. Then you need the respective, possibly paid license to view the content.
3GP files can only contain audio. For example, some phones use this format for ringtones. The Playstation 3 also generates this format for audio.
The support of the format by hardware players, be it phones or other devices, varies in severity. Most 3G-capable phones, but also some 2G and 4G phones support the format. How much depends on the capabilities of the hardware (storage space, display and camera resolution, etc.).
Many phones bring their own software for processing.
Windows
Microsoft Windows Video
QuickTime Player
Xilisoft Video Converter Ultimate
Adobe Flash Professional
Creator NXT Pro
Free 3GP Converter
SWF & FLV Toolbox
RealPlayer
Mobile Media Converter
VLC media player
Any Video Converter Pro
Nokia Suite
Prism
MPlayer
AviDemux
VideoSuite Personal
Apple QuickTime
KMPlayer
ALLPlayer
Final Media Player
3GP PLAYER
Nokia Multimedia Player
Any Audio Converter
Free Studio
FormatFactory
Freemake Video Converter
Any Video Converter FREE
FFmpeg
DRM Media Converter
Video Converter Personal
Free Video Converter
Any DVD Converter
ImTOO DPG Converter
Xilisoft DVD Creator
Xilisoft Video Converter
Ultimate Video Converter
DVD Ripper+Video Converter Ultimate
Magic 3GP/iPod/PSP Video Converter
All to iPod Zune PSP 3GP
MediaCell Video Converter
ImTOO 3GP Video Converter
3GP/iPod/PSP/MP4 Converter
SUPER
Aoao Video to Picture Converter
iPad Video Converter Factory Pro
WinX Video Converter
Mac OS
Android
iOS
Most often resolving problems with opening 3GP files is very simple. Just install an appropriate program that supports such files. All of the listed programs support 3GP files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of 3GP files or offer file conversion options, but may not be capable of editing such files.
It is possible that although a compatible program has been installed on user’s system, it is not used by the system to open it. This may happen because no default application was associated with this type of files. To associate 3GP files with given application, select "Open with" from drop-down menu (accessed by right-clicking on the file). Then select from the list the program or application you want to be used to open this type of file. If the QuickTime Player applications is not on the list, select "Browse" option in order to manually locate the directory where QuickTime Player has been installed.
Sometimes problems with opening 3GP files may not lie with the application itself, but can arise due to other causes, such as: