MP4 development of the whole seven years, although long overdue can be the perfect support for AVI format, but a long time can not fully compatible with the format models RMVB birth.

• MP4发展的整整七个年头里，虽然早就可以做到完美支持AVI格式，但却久久未有能够完全兼容RMVB格式的机型诞生。