play 3gp format file

hi,
i want to play 3gp file. pls send the software

can play gpfile format, and mp4, what should i do? can u give me a gp gp file decoder
thanks

I have a movie-Star Trek 2009 giga.avi 1,49 GB and I
can’t view it using ACE Mega codecs pack or Windows Essential
codecs pack,it shows ¨unknown codec¨What can I do?