How to convert HD video?

you can use Video X Converter - Convert popular videos & audios for portable devices supported.It is a most versatile tool to convert videos, audios and photo, enables you to convert videos of almost all popular formats such as *.RM, *.RMVB, *.AVI, *.WMV, *.ASF, *.MPG, *.MPEG, *.MPE, *M1V, *MPV2, *.MP4, *.DAT, *.MOV, *.VOB as well as all kinds of audio formats like *.MP3, *.WMA, *.WAV, *.RA, *.M4A, *.AAC, *.MSV, *.OGG etc. and image *.BMP, *.JPG, *.GIF, *.TIF, *.PNG. It supports files formats as more as you heard.