3GP
From Wikipedia, the free encyclopedia
3GP is a multimedia container format defined by the Third Generation Partnership Project (3GPP) for use on 3G mobile phones.
| 3GP | |
|---|---|
| File extension | .3gp .3g2 |
| Internet media type | video/3gpp audio/3gpp |
| Type of format | media container |
[edit] Technical details
3GP is a simplified version of the MPEG-4 Part 14 (MP4) container format, designed to decrease storage and bandwidth requirements in order to accommodate mobile phones. It stores video streams as MPEG-4 Part 2 or H.263 or MPEG-4 Part 10 (AVC/H.264), and audio streams as AMR-NB, AMR-WB, AMR-WB+, AAC-LC or HE-AAC. A 3GP file is always big-endian, storing and transferring the most significant bytes first. It also contains descriptions of image sizes and bitrate. There are two different standards for this format:
- 3GPP (for GSM-based Phones, may have filename extension .3gp)
- 3GPP2 (for CDMA-based Phones, may have filename extension .3g2)
Both are based on MPEG-4 and H.263 video, and AAC or AMR audio.
When transferred to a computer, 3GP movies can be viewed on Linux, Mac, and Windows platforms with programs such as VLC media player, RealPlayer, QuickTime, GOM Player and Media Player Classic.
[edit] Hardware support
- Most 3G capable mobile phones support the playback and recording of video in 3GP format.
- Some newer phones without 3G capabilities may also playback and record in this format.
- In iMovie '08, a movie exported using the "Tiny" setting is saved as a .3gp file and can be played on a Mac, an iPhone, an iPod touch or using Apple's .Mac Web Gallery service.
- Audio imported from CD onto a PlayStation 3 will copy onto USB devices in the 3GP format.
[edit] External links
|
|||||||||||||||||||||||||||||||||||||||||||
