Change format of any video file easily by using Super Video Converter
Use this app and you can:

• Convert avi, flv, mov, mkv, wmv, 3gp, 3gpp, 3gpp2, 3gp2, 3mm, aec, aep, amc, amv, dat, gvi, kmv, m4v, mts, mtv, ts, tvs, vob, webm, wvm, mpeg, ogv, rmvb, wtv, m2ts, m2v , … video files to mp4
• Change quality of video files(2160p, 1080p, 720p, Pal, Ntsc, Vga)