Can I convert a MKV file into mp4 or

[in a mo]

I have downloaded a file MKV which will not play on my CD convertor ,can you please explain how

[AlBags]

What do you mean .. CD Converter?
An mkv will play ok (it is a 'container' for various formats .. often mpeg or avi)

Can you play it at all? If so you have a suitable splitter codec on your system. If not .. try installing the Haali mkv splitter codec from here ... (latest version)
http://www.free-codec...matroska_splitter.htm

[Wak]

Download and install the Format Factory from
http://www.formatoz.com/
Good FREE program.
Used it for years.