Need help about Dual Audio mkv to AAC or AC3.

[dooms9day]

Hi to all forum,,
I have a dual audio mkv file which includes 6 channels AAC and AC3 audio, I want to extract its both audio file with the same format in 6 channels but with the lower bitrate which were definitely decrease the size of the audio files, and that I must need,, plz help me,,,

[hello_hello]

MKVCleaver will extract the audio streams (requires MKVToolnix to be installed).

If you want to reduce the bitrate it'll mean re-encoding the audio which will involve a drop in quality (even if it's not enough of a quality drop to be noticeable). There's probably a hundred different programs you could use to re-encode the audio.

Do you happen to have MeGUI installed? It'll re-encode the audio for you. If you want to re-encode either audio stream as AAC (which would probably be the best bet quality-wise if you want to reduce the bitrate) you'll need to download and install the Nero AAC encoder separately.

[dooms9day]

MKV Clever work great for extracting audio,, thanks alot for this,, for encoding lower audio bit rate, I'll use MeGUI later,,, then I'll tell you,,, thanks again,,,