From Timhillone Software:
Apt Video Converter is apt and powerful media converter which can convert almost all popular video and audio formats each other, such as converting AVI, MPG, WMV, RM, RMVB, ASF, MOV, MP4, 3GP, MKV, FLV, CD, VCD, DVD, MP3, WMA, AC3, OGG, AMR, AAC, WAV etc. In addition, you can convert your Camera to these file formats, and can convert downloaded videos to your iPod, PSP, Zune, iPhone. This software have embedded and optimized many encoder and decoder, H264, Xvid, Divx, Mpeg4, Mpeg2, WMV3, RV40, Mjpeg, MP3, AC3, AAC, OGG Vorbis etc, so it have very fast conversion speed and excellent quality. Other features include friendly user interface, and freely changing convert setting such as bit rate, video size, audio parameter etc. Version 1.33 may include unspecified updates, enhancements, or bug fixes.