.MP4V file extension

This is the basic program to work with .MP4V extension

Media Player Classic

Media Player Classic Fichier multimédia

Media Player Classic - Home Cinema is a free audio and video player for Windows. Features: - An option to remove Tearing - MPC Home Cinema in Your Language (see all languages) - Additional video decoders and in particular H.264 and VC-1 with DXVA support... (more)

The program works with the following extensions: vob, dat, swf, mp4, wmv, flv, avi, ifo, mkv, ts, tp, mov, ra, rm, qt, rp, rt, rv, roq, ogg, ivf, m1a, m4a, tpr, ogm, mpe, flt, m4b, vp7, dss, m4p, pss, mpg, m4v, m4e, dsm, flx, ram, rpm, mpv, drc, 3g2, d2v, rmm, 3gp, vg2, smi, dsa, aif, wmp, dsv, pva, ac3, vp6, dts, flh, asf, amr, rnx, m2g, mpc, cel, bik, mka, m1v, flc, m2a, m2v, mps, fli, mp2v, mpeg, mpv2, flic, rmvb, 3gp2, smil, aifc, 3gpp, divx, mp4v, aiff, mpcpl, hdmov and ratdvd