.mkv editing help

[devilsrainbow]

what is a program i can edit a .mkv file?

I have some videos that have japanese and english as a audio..plus english subtitles. but i want to delete the japanese audio.

reason why i want to do this is to see if that will help with the video skipping. unless theres something else i can do. When i play videos that have several languages in the file the video lags.

any program that will work on mac os x.

 

[smbd]

MKVToolnix
With MKVExtract you can extract the streams of an MKV file, as for example the subtitles.

 

[devilsrainbow]

that program seems to not be supported anymore for macs...

is there any program that i can convert these mkv files to avi or something else? and still have it in english? since its in english and japanese.