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3gp v ideo converter - plus source code

3gp converter

About:
3gp converter is a GUI(kommander script) that uses ffmpeg to convert video files in the 3gp format, which is used by mobile phones. Custom encoding parameters can be set for video streams, such as resolution,aspect ratio,cropping,bitrate, framerate, used codec (h263, mpeg4), and one or two pass encoding. For audio streams, bitrate, samplerate (AAC only),stereo of mono sound (AAC only),audio volume(fade in,fade out), and audio codec (amr_nb, AAC) can be chosen, you can encode AMR audio files(can be usefull for old mobiles).Also you can cantrol priority of encoding,set size and time limits of encoded file. 

What you need:
You will need Kommander installed at your system (at least kommander-executor).Kommander is a part of kde-webdev package,so you should install this package to use this script,or you can downolad source code of kommander
here http://kommander.kdewebdev.org , then compile and install.
Also you need ffmpeg, that must be compiled with AMR audio-codec support for this to work. 
Download the latest version here http://ffmpeg.org/,
Extract ffmpeg sources in some directory,
create new directory inside ffmpeg tree  /ffmpeg_source_dir/libavcodec/amrwb_float
then download AMR WB floating-point sources
here http://www.3gpp.org/ftp/Specs/archive/26_series/26.204/26204-510.zip
and extract  AMR WB sources at amrwb_float directory.
Then downlodad AMR NB floating-point sources
here: http://www.3gpp.org/ftp/Specs/archive/26_series/26.104/26104-510.zip
create new directory inside ffmpeg tree  /ffmpeg_source_dir/libavcodec/amr_float
and extract AMR NB sources at amr_float directory.
You must configure at least with options --enable-amr_nb --enable-amr_wb 
If you are planing to encode videos with AAC sound,then you must have libfaac installed at your system (http://www.audiocoding.com) and should enable support for that ( --enable-libfaac)
When you are ready to compile,just open the console, configure with needed options,compile and install ffmpeg.
(f.e. ./configure --enable-amr_nb --enable-amr_wb --enable-libfaac && make && make install)
It you want to enable some other extra codecs for ffmpeg,then type ./configure --help for all list.

How to use:
Type at the console $kmdr-executor /path_to_3gpconverter/3gp-convert.kmdr to run the script,
Choose the file you want to convert,set the output file,set up needed parameters of encoding then press
 "convert" button to start encoding.

Have fun :)