App that can merge subtitles with MKV and AVI files?

[Chic0]

I am looking for an app that will enable me to merge subtitles (.srt) with MKV and AVI files. Any ideas?

I am using a MBP with Lion installed.

Thanks

 

[CHRONiC YOUTH]

Virtual dub

 

[Chic0]

Virtual dub

just been onto their site, but looks like it's windows only

 

[iHOUBSTER]

http://www.macupdate.com/app/mac/16837/mkvtoolnix