thanks.

But I always use iskysoft video converter and it works so well on my computer. Also, it supports various format such as avi, wmv, mp4, flv, mp3, 3gp, 3g2, mov, vob, mkv, etc.

And I found a new multimedia software called aimersoft mkv converter is helpful too.

You may have a try.;)

Tipard Video Converter supports the mutual conversion between all video formats for you to enjoy the on-line abundant video sources on your portable devices.
Input Formats: MPG, MPEG, MPEG2, VOB, MP4, M4V, RM, RMVB, WMV, ASF, TS, MKV, AVI, 3GP, FLV, MPV, MOD, TOD, MP3, MP2, AAC, AC3, WAV, MID, MIDI, WMA, M4A, RA, RAM .
Output Formats: MP4, H.264, AVI, MP3, WMV, WMA, FLV, MKV, MPEG-1, MPEG-2, 3GP, 3GPP, VOB, DivX, Mov, RM, RMVB, M4A, AAC, WAV, OGG, RA, M4A, MP3, AC3, AAC, WMA, WAV, OGG.
It also possesses strong editing functions of clipping video segments, cropping the video play region, capturing your favorite pictures and joining your selected contents into one file.
Free download the best Video Converter and have a try!

For iPod users, Tipard iPod Converter Suite is a requisite iPod converter to rip DVD and any video to iPod MP4 video format and MP3, M4A, AAC audio format. It can also backup the files on iPod to computer. This iPod Converter Suite is discount software for the coming Christmas. It is actually the combination of Tipard DVD to iPod Converter, Tipard iPod Video Converter and Tipard iPod to PC Transfer.



Key Functions:
1. Rip any DVD and video to iPod video and audio formats
Rip DVD and convert MP4, H.264, AVI, MP3, WMV, WMA, flv, MKV, MPEG-1, MPEG-2, 3GP, 3GPP, VOB, DivX, Mov, RM, RMVB, M4A, AAC, WAV to iPod MP4, H.264 video formats and iPod MP3, M4A, WAV, AAC audio formats.

2. Transfer music and video files from iPod to computer
Help you to backup iPod video/audio files to PC, then you could transfer the video/music to another iPod or iPhone.

3. Easy and powerful editing function (Merge, Trim, Crop, Snapshot)
It offers powerful editing functions such as joining multiple DVD chapters, titles or different videos files into one file, trimming any clip from video and DVD, cropping the size of video play region and so forth.

Can anyone find me software that can divide the profile dvd which has 9gb size to two 5gb dvd . . It should keep the subtitles intact and should be able to create separate menus ofcourse . .

Many people now have iPods. But they often get difficulties in conversions such as: rip DVD to iPod Touch/Classic/Nano, Convert Video to iPod Touch/Classic/Nano, Convert Protected Videos/Music to iPod Touch/Classic/ Nano. In order to solve these problems I introduce three converting tools: Cucusoft DVD to iPod Converter, Cucusoft iPod Movie/Video Converter, Daniusoft Digital Media Converter. What you need are an iPod Touch/Classic/Nano and the converting tools above. You can download the softwares from following websites.
1: Cucusoft iPod Video Converter Suite (including Cucusoft DVD to iPod Converter and Cucusoft iPod Movie/Video Converter)
2: Daniusoft Digital Media Converter
3: Apple iTunes
There are four parts in this guide. I hope it will be helpful for you.
Part 1: How to Convert DVD to iPod Touch/Classic/Nano
Part 2: How to Convert Video to iPod Touch/Classic/Nano
Part 3: How to Convert Protected Videos/Music to iPod Touch/Classic/Nano
4.Part 4: Add the ready videos/music to your iPod Touch/Classic/ Nano
Part 1: How to Convert DVD to iPod Touch/Classic/Nano
Step 0:Install and run Cucusoft DVD to iPod Converter.
Step 1: Place the DVD into your DVD drive.
Step 2:Click the “open DVD” button to load DVD.

Step 3:Select "Direct mode" or "Batch Mode"
"Direct Mode" means that you can directly click the DVD Menu to select the DVD movie you want to rip. This mode is very easy for ripping a movie DVD's.

"Batch Mode" means that you can select the DVD titles/chapters and audio track they want to rip via checkbox list. This mode is very easy for batch ripping Music DVD's, MTV DVD's and Episodic DVD's.

Notes:
In "Batch Mode", you not only can select the DVD titles/chapters and audio track, but also can adjust conversion time. So It is easy for you to convert any segment of DVD.
Step 4: Select output format from the "Profile" drop-down list.


Notes:
Click the "…" button at the right of the “profile” drop-down list to set the important parameters: Video Bitrate, Audio Bitrate, Frame Rate and Video Size. For a high image/sound quality you can increase the value of Video/Audio Bitirate and for a compressed file you can decrease the value.
Step 5:Click the “Convert ”button to start the conversion. You can have a cup of coffee or have a walk. In a quite short time it will finish.
Part 2. How to Convert videos to iPod Touch/Classic/Nano
This software supports almost all kinds of video formats including MP4, Tivo, Flv, MKV, DivX, XviD, MOV, dvr-ms, rm, rmvb, MPEG, WMV, AVI ... to playable video formats for iPod Touch/Classic/ Nano.
Step 0: Install and run Cucusoft iPod Movie/Video Converter.
Step 1: Click the “Open file” button to add the video files you want to convert.

Step 2:Select output format from the "Profile" drop-down list.

Notes:
Click the “…” button at the right of the “profile” drop-down list to set the important parameters: Video Bitrate, Audio Bitrate, Frame Rate and Video Size. For a high image/sound quality you can increase the value of Video/Audio Bitirate and for a compressed file you can decrease the value.
Step 3:Click the “Convert” button to start the conversion .In a short while the conversion will be finished.

Part 3: How to Convert Protected Videos/Music to iPod Touch/Classic/ Nano
Step 1: Download and install the DRM Removal Software.
Step 2: Run the software and click “Add…” button to load your protected WMA, M4A, M4B, AAC, WMV, M4P, M4V or ASF files
Step 3: Choose output formats. If you want to convert protected audio files, please select “Convert audio to” list; If you want to convert protected video files, please select “Convert video to” list.

Step 4 :Start remove DRM and convert your DRM protected music and
videos by clicking “Start” button.

Part 4: Add the ready videos/music to your iPod Touch/Classic/ Nano
If you want to add video to iPod Touch/Classic/Nano with iTunes,
follow these steps:
1.Open iTunes and click "File" to add your videos to iTunes library.
2.Plug in your iPod to computer, then iTunes will detect your iPod as a device.
3.Select your iPod device on the left panel of iTunes, click "Movies" tab, check the videos you want to sync and click "Apply", done.

Now enjoy your high-resolutin video on your iPod Touch/Classic/Nano.
Have fun!

Best DVD Ripper