There are many generic tools to change the format of your videos and films, but few are specialized in obtaining video coded in a format that is appropriate for the features of a mobile telephone.
A quick and efficient video converter
One of these utilities is MediaCoder Mobile Phone, a very complete and precise application that can manage to convert almost any video format to a size and resolution that is ideal to be played on an incredible amount of mobiles.
This application stands out due to the fact that it offers a large amount of tools that will help you to adjust several of the video parameters: brightness, contrast, deinterlacing, saturation, gamma correction,... Furthermore, it's possible to adjust the final size, the quality of the video, the FPS, add tags, cut part of the image, add subtitles, etc. Some of the output formats supported by MediaCoder Mobile Phone are: 3GP, MP4, AVI, MP3 and AAC.