you may get a video converter help you, Personally, I use Movavi Video Converter for all video conversion, I used it to convert all my DVD rips from .avi to .mp4's for my iPod. Here's some of the features from their site:
Convert videos between all formats & devices
- Movavi Video Converter supports 40+ video, audio, and image file formats
* Input Video Formats: AVI (DivX, XviD, etc.), DV AVI, MP4 (Sony PSP, Apple TV, iPod, iPhone, BlackBerry, etc), WMV (including Zune, Archos and Creative Zen), ASF, 3GP, 3GP2, 3GPP, 3GPP2, QuickTime (MOV, QT), DVD, VOB, IFO, VIDEO_TS, AUDIO_TS, MPG, MPEG 1,2,4, MOD, DAT, MJPEG, VCD, SVCD, H.263. New: M2T, MTS, MKV, VRO, Flash (FLV).
* Output Video Formats: MP4 (Sony PSP, Apple TV, iPod, iPhone, BlackBerry, etc), WMV (including Zune, Archos and Creative Zen), 3GP, 3GP2, 3GPP, 3GPP2, QuickTime (MOV, QT), MPG, MPEG 1,2,4, H.263, H.264, Real Media (RM, RMVB). New: Flash (FLV).
* Output Video for Mobile Devices: iPod, iPhone, Apple TV, PSP, Zune, PDA/Pocket PC (including BlackBerry), Creative Zen, Archos, Epson media players, any cellphone.
* Output Audio Formats: MP3, WAV, WMA. New:OGG, AAC, FLAC, Monkey's Audio.
* Output Image Formats: JPEG, PNG, BMP, GIF.
If you want a try, free download link here:
http://www.flash-video-soft.com/movavi-video-converter-personal/
hope it is useful