i cant't open a movie format

dear support..

My good day just fetching os yosmeti 10.10.3 after that I could not keep my files on my external hdd wd-type element to the specifications (Windows NT File System (NTFS)) os long before I can use these elements to help back up my data. and I also can not watch my films I have on the external hdd. there are some files that form its (Windows Media, AVI movie, Unix Executable File) get support to help me in solving the problems I face today ...

I thank you in advance ...