Want to add a new audio track to an mkv file?

[swordfish-II]

ok so I have an anime thats in mkv format, but its in jap with english subtittles and I have the same anime with english audio but the video quality is better for the one with the audio in jap, so I want to remove the audio from the second one and add it to the first one, im using a mac and the programs I downloaded to do so are MKVtoolnix and tsMuxerGUI, using tsMuxerGUI I was able to extract the audio track I dont know if I did it the right way but I beleive so I ended up with a file named Ghost in the Shell S.track_2.aac, now I have no idea how to use MKVtoolnix so if someone could help me out and tell me how to do it thatd be great.

[Baldrick]

Use mkvmerge gui (mmg) and load the original mkv and then add the new audio file. But I'm not sure if the mac version include the mmg....maybe mkvtools has a gui for it.

And I'm moving you to our mac section.

[swordfish-II]

I try and add the audio but when I save it and try to open the video file nothing happens vlc opens but nothing starts or sounds

and since I honestly dont know how to use mkvtoolnix I might be doing it wrong but what I do is press add and choose the file that has the good video quality then I press add again and choose the sound file I got from the other one and its called Ghost in the Shell S.track_2.aac , then I choose what folder I want it to mux to and press start muxing but after its done like I said nothing happens.

[Ai Haibara]

Yeah, I'd recommend trying MKVTools as well, over mkvtoolnix (do the OS X builds have GUI apps, in the newest versions?). Besides, I've heard a number of stories about problems with the more recent versions of mkvtoolnix not working correctly under OS X.

[swordfish-II]

ok ill try MKVTools but can you tell me or someone tell me how to do it step by step im a noob at this have no idea how its done

[ranosb]

Extact the audio & video from each video(demux) that you want to keep. Then drag&drop the video & audio files into your program to save as a .MKV file...