What is a .3gp file?
video/3gpp
3GP is the mobile profile of the ISO base media file format, defined by 3GPP for 3G handsets and for video sent over MMS. It shares MP4's box structure and announces itself with an `ftyp` brand such as `3gp4` or `3gp6`, but wraps H.263, MPEG-4 Part 2, or H.264 video with AMR-NB, AMR-WB, or AAC audio at bitrates a 2000s cellular link could sustain. Almost every .3gp file in the wild is an old camera-phone capture; the near-identical .3g2 is 3GPP2's version for CDMA2000 networks.
How to use a .3gp file
Use an example .3gp clip to test mobile-video players, ISOBMFF demuxers, and 3GP-to-MP4 transcoding, confirming that the 3GP brands are recognized as valid MP4 relatives, and that AMR audio is decoded rather than dropped, which is the usual reason a converted clip plays silently.
Download example .3gp files
- 3GP — Mobile H.264 ClipThe clip as 3GP — the 3GPP mobile container from the feature-phone era. For testing 3GP demuxing and conversion.
- Container — 3GPOne H.264 elementary stream wrapped in 3GP. Every file in this group was produced from the SAME encode with a stream copy, so the compressed video bytes are identical and the container is genuinely the only difference. The mobile profile of MP4, from the feature-phone era. Still emitted by some Android capture paths, so it turns up in user uploads.