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.
If you were looking for a quick and efficient video converter for your mobile, you have just found it: MediaCoder Mobile Phone.