How to create .3GP (convert avi, mpg to .3gp file) ? How can I convert all or any of the media files out there to 3GP format? The most easy way: download Nokia Multimedia Player with 3GP support. Download it from here: Nokia_6600_Multimediaplayer_1_1_en.exe (8MB) This is normal video player for PC platform (Windows OS), but it has several additional functions (conversion to 3gp format). 1) Download and install player. 2) Launch Nokia Multimedia Player. Open your video file (avi, mov or mpg). 3) Press File -> Save as... 4) Enter filename of your 3gp file, and choose resolution and size limit: MMS 64KB, 128*96 MMS 95KB, 128*96 MMS 95KB, 176*144 Custom 200KB, 128*96 Custom 200KB, 176*144 Custom 300KB, 128*96 Custom 300KB, 176*144 No size limit, 128*96 No size limit, 176*144 5) Click Save. File converted. That's all!  See Also:  How to convert 3GP to AVI ?  How to convert AVI to 3GP, MPEG to 3GP, and to change audio or video quality, bitrate, frame rate ?  How to convert audio from mobile phone AMR to WAV ?  How to convert MP3 to AMR, WAV to AMR for mobile phone ?  How to convert audio file WAV to AMR, MP3 to AMR (or WB-AMR, awb) for mobile phone MMS and to change audio bitrate, quality, maximum file size ?