How to make iphone ringtone freely on windows and mac

Recently I make free trial of some pretty good mac video converters which work with high efficiency and quality.
Mac Video Convertercan convert between all video formats such as MPEG, MP4, H.264, SWF, FLV, VOB, MOD, M4V, AVI, WMV, 3GP, 3GPP, MOV, DivX, XviD, MOV, DV, MJPG, MJPEG, MPV, etc, as well as HD video TS, MTS, M2TS. As the Mac Total Video Converter, it can also convert between audio formats such as MP3, MP2, AAC, AC3, WAV, WMA, M4A, RAM, OGG, AU, AIF, AIFF, APE, FLAC, NUT and extract audio from video files.
iPod Video Converter for Maccan convert all popular video formats like MPG, MPEG, MPEG2, MTS, M2TS, TS, VOB, MP4, M4V, RM, RMVB, WMV, ASF, etc to MP4, H.264/MPEG-4 AVC(.mp4), MOV format for all iPod versions. It can also convert any audio formats and exact audio from video to iPod MP3, M4A music.
iPhone Video Converter for Maccan convert MPG, MPEG, MPEG2, MTS, M2TS, TS, VOB, MP4, M4V, RM, RMVB, WMV, ASF, etc to iPhone video MP4, H.264/MPEG-4 AVC(.mp4), MOV for you to enjoy on iPhone. This Mac iPhone Movie Converter can also convert MP3, MP2, AAC, AC3, WAV to iPhone MP3, M4A audio and extract audio from video file, then convert to MP3, M4A.

I find some good conveters in the market.
TOD Converter makes it easy to convert TOD file to your video equipment compatible formats, like convert TOD to MP4, AVI, WMV, 3GP, HD videos and more.
MP4 Converter convert all the mainstream video, like AVI, FLV, WMV to MP4, H.264/MPEG-4 AVC(.mp4), MOV, AVI, and convert audio or take out audio from videos to AAC, AC3, AIFF, AMR, AU, FLAC, MP3, M4A, MP2, OGG, WAV, WMA,etc.
Archos Video Converter can convert any video and audio formats to Archos MP4, H.264/MPEG-4 AVC(.mp4), WMV, AVI, MP3, WMA, M4A, WAV video and audio formats.

Go here to get more information on how to convert avc converter easily and swimmingly.
http://www.squidoo.com/avcfileconverter

There is an excellent total video converter. It converts between any video formats with high conversion speed and quality. including MP4, AVI, WMV, MPEG, VOB, FLV, 3GPetc.

Tod/Mod file converter full guides you.
http://www.squidoo.com/tod-mod-files-converter

The .m2ts is a container file format for multiplexing audio, video and other streams. It is based on the MPEG-2 transport stream container and is also known as BDAV MPEG-2 transport stream. This format is commonly used forhigh definition video. Here is the M2TS FULL GUIDE.
http://www.squidoo.com/m2tsfiles