MP4 to 3GP Converter
MP4 to 3GP Converter is a powerful video converter to convert MP4 to 3GP, convert MP4 to 3GPP. Thus you can enjoy all MPEG4 videos on mobile phones. It is also a 3GP to MP4 converter to convert 3GP file to MP4 video. In that way, all the videos recorded with mobile phones can be played back by all kinds of portable players. MP4 to 3GP Converter actually makes all your videos freely transfer between mobile phones and PMPs.
With professional MP4/3GP decoders and encoders integrated, MP4 to 3GP Converter can finish all conversions with fast speed and superb output quality.
Besides that, MP4 to 3GP Converter can convert any video to AVI, WMV, MOV, FLV, MPEG, MP4, VOB, DivX, Xvid, 3GP, 3GPP, RM, RMVB, MKV, H.264 etc. And all PMPs are supported including iPod, iPhone, PSP, Xbox, Zune, Nokia, Sony Walkman, iRiver PMP, Archos, Mobile phone, BlackBerry, Pocket PC, PDA etc.
MP4 to 3GP Converter can also works as a Video Joiner, Video Cutter and Video Cropper, with it, you can accomplish almost all common video editing work.
How to convert MP4 to 3GP and convert 3GP to MP4
Download and set up MP4 to 3GP Converter.

Step 1. Input file
Click Add File button or File,Add File menu to add videos you want to convert.
Step 2. Set output format
Click to open Profile drop-down list and choose 3GP as the output format when converting MP4 to 3GP. Choose MP4 as the output format if you want to convert 3GP to MP4.
Click Settings button to set detailed video encoding parameters.

Step 3. Set output folder
Click Browse and select a folder to place output videos.
Step 4. Convert videos
Click Start button to start conversion.
MP4 to 3GP Converter enables you to easily enjoy all kinds of MP4 videos on mobile phone, or transfer the videos you recorded with mobile phone to portable players.