Images:
http://www.stintercorp.com/genx/imageconverter.php (vchiluka)

Video
http://www.easyxsoft.com/EasyXVC/  (xqi)
http://www.artech365.com/  (czhu)
http://www.tmpgenc.net/e_main.html  (ychen)

Audio
http://www.litexmedia.com/wma_workshop/ (lzhao)