This step by step guide is to demonstrate how to convert, trim, combine and edit video. If you want to convert DVD and edit DVD movie to Pocket PC, you can refer to this passage here:
http://www.aimersoft.com/tutorial/dvd-to-pocketpc-converter.html

This Pocket PC Video Converter guide includes the following three parts:

• How to convert video to Pocket PC
• How to trim, crop, join and edit video
• Tips for the conversion of Pocket PC video converter
  
  

At first，The tool you need is Aimersoft Pocket PC Video Converter, which you can download for free from:
http://www.aimersoft.com/pocketpc-video-converter.html

The video formats Aimersoft Pocket PC Video Converter support are as follows:
AVI, XviD, WMV (Window Media Video), MPEG, MPG, MP4, FLV (YouTube video), DAT (VCD), 3GP, 3GPP (cell phone video), VOB (DVD ripper video), RM, RMVB (Real Player video), MOV (QuickTime video), M4V, ASF,

The audio formats supported by Aimersoft Pocket PC Video Converter are:
MP3, WMA, WAV, AC3, M4A, OGG, AAC

Part1. How to convert video to WMV or some other formats for pocket pc?
Step1. After download the Aimersoft Pocket PC Video Converter, install and run it, click the “Add” button to import your videos. Aimersoft Pocket PC Video Converter support batch conversion, so you can import multiple files at a time. If you experience any problems adding videos by directly clicking the “Add” button, you can click “File -> Add DirectShow files…” to add the video files you want to convert from your computer.

Step2: This software can convert video such as AVI,MPEG, VOB and so on to WMV video for Pocket PC and PDA。Click the “Format” drop-down list to select the format you prefer for each added file. If you don’t know what formats your device support, you can just select the format “General Pocket PC Video (*.wmv)”

If you want to customize the output quality, click the “Settings” button to open the Settings panel, where you can set resolution, frame rate, video bit rate, audio bit rate, sample, etc. You also can create a Settings profile and save it, and then you won’t have to set the same settings every time. Since Aimersoft Pocket PC Video Converter support batch conversion, you can use different profiles for the added video files to save your time. If you don’t want to do these settings, the default settings will just work perfectly.

After you finish all the above steps, please click “Start” to begin the conversion.