Convert MP4 to 3GP — Free Online Converter

MP4 to 3GP conversion takes the world's most popular video format and repackages it for legacy mobile devices that rely on the 3GPP standard. The 3GP container was designed by the 3rd Generation Partnership Project specifically for 3G mobile networks, where bandwidth was severely limited. While modern smartphones handle MP4 natively, millions of older feature phones and budget handsets in developing markets still depend on 3GP for video playback.

Our converter uses FFmpeg to transcode MP4 video from H.264 or H.265 into the H.263 or MPEG-4 Part 2 codecs that 3GP requires, and re-encodes audio to AMR-NB at 8 kHz. The result is a compact file that plays on virtually any phone manufactured in the last two decades.

3GP exists for one reason: delivering video over constrained mobile connections to low-powered devices. If you need to send a clip via MMS on a network that caps attachments at 300 KB, or play video on a Nokia feature phone in a region where smartphones are not widespread, 3GP is the only viable option. The format also sees use in surveillance systems and embedded devices that were designed around 3GPP decoders. Converting from MP4 trades resolution and bitrate for extreme portability.