Adapter is free Mac application for iPhone owners who frequently convert videos in an iTunes or iPhone-compatible format. Adapter is available in both a Mac and a Windows version for download and some weigh more than 10MB. Adapter supports numerous, even unknown formats and sees itself well to the conversion of audio and image files.
Some popular supported extensions are avi, dv, flv, gif, mov, mp4, m4a, 3gp, 3g2, mpeg, wav, rm and more. Download Adapter here
And more supported formats are 3g2, 3gp, 4xm, RoQ, ac3, alaw, asf, asf_stream, au, audio_dice, avi, crc, daud, dc1394, s, dv, dv1394, dvd, ea, ffm, film_cpk, flic, flv, gif, h261, h263, h264, idcin, image, image2, image2pipe, imagepipe, ipmovie, m4v, matroska, mjpeg, mmf, mov, mov, mp4, m4a, 3gp, 3g2, mp2, mp3, mp4, mpeg, mpeg1video, mpeg2video, mpegts, mpegvideo, mpjpeg, mulaw, nsv, null, nut, ogg, psp, psxstr, rawvideo, redir, rm, rtp, rtsp, s16be, s16le, s8, sdp, shn, sol, svcd, swf, u16be, u16le, u8, vcd, video4linux, vmd, vob, wav, wc3movie, wsaud, wsvqa, yuv4mpegpipe.