How to convert MKV to MP4 video
Powerful MKV to MP4 Converter
It is a profession conversion software. It has powerful converting functions. It can be used as an video editor. It is MKV to MP4 Converter. The converter supports converting MKV to video formats (MP4, AVI, MPEG, WMV, MOV, 3GP, FLV, etc) and audio formats (MP3, AAC, WMA, WAV, AC3, OGG, etc). Moreover, you can play MKV videos on iPod, iPhone, Apple TV, PSP, PS3, Xbox, mobile phones with this converter. Very powerful. Just free download and have a try.
Convert mkv to mp4 format for psp
Now this is an explicit guide to teach you how to convert mkv to mp4 format. Just several clicks, you can finish the conversion.

Click "Add File" button to import mkv videos. You can add multiple files one time. The converter will listed these added files on the inteface.
Editing functions are "Effect, Trim, Crop" buttons. They are Effect (adjust video effects) Trim (split video into clips) and Crop (alter video play rigion).
Choose General Video---MPEG-4 format as output profile. Click "Settings" to create your own format. Set Destination folder by clicking "Browse" button.

Convert MKV to MP4 format by clicking
button. A window on which there are progress bars will show you the converting status. You have to wait until the bars achieve the end.
This is the way to convert mkv to mp4 format. Fllowing it, you could easily convert mkv to any format you need with this MKV to MP4 Converter.