MP4轉檔程式

Try this one( free of charge):
MP4 converter Convert any input video format to MP4. Convert an MP4 file to any other video format.
The rendered MP4 files are created using a wide variety of codecs H.264/MPEG-4/DivX/XviD/H.263... together
with AAC, AMR, wav audio. They are fully playable on QuickTime7
http://www.erightsoft.com/SUPER.html

或者你可以用WinAVI MP4 Converter




WinAVI iPod/PSP/3GP/MP4 Video Converter is software for MP4/3GP file conversion of portable video device such as iPod/PSP, It can convert almost all video formats, for e.g., DivX, XviD, MOV, rm, rmvb, MPEG, VOB, DVD, WMV, AVI to iPod/PSP or other portable video device, MP4 player or smart phone. It has an unmatchable speed and high quality. And it supports transport your video files to your iPod/PSP directly.

WinAVI iPod/PSP/3GP/MP4 Video Converter let you enjoy the film with your iPod/PSP. It is a must-have for anyone who wants to see video on iPod/PSP or other portable video devices.

*. Converts all formats to Apple iPod Video.
*. Converts all formats to Sony PSP.
*. Converts all formats to MP4 format that can be played on general portable video device such as MP4 player.
*. World's fastest video conversion speed.
*. User-friendly interface that is easy to use.
*. Transport video files to iPod/PSP directly. No need to install iTunes or other softwares.
*. Supports batch conversion.
*. Stunning video and audio quality.
*. Supports clip/zoom/soften the video.
*. Supports adjust many video/audio options for MP4 files. For example, video/audio sample rate, bit rate, video size...
*. Has the option to preview the video in real-time.
*. Has the option to automatically shutdown your computer when the conversion has been completed.