Aiseesoft M4V Converter for Mac can convert M4V video and other popular video/audio files to any other video(3GP, 3G2, AVI, DivX, FLV, H.264, H.264 AVI, H.264/MPEG-4 AVC, M4V, MOV, MPEG-1, MPEG-2, MPEG-4, WMV, XviD, HD video) and audio(AAC, AC3, AIFF, AMR, AU, FLAC, M4A, MKA, MP2, MP3, OGG, WAV, WMA) formats for your iPod, iPhone, iPad, BlackBerry, Creative Zen, Zune, Walkman, etc. Moreover, it can support 5.1 surround sound now after upgraded.