extracting audio from a h264+aac mp4 video

[adrianmak]

I wrote a avs script to read a mp4 video (h264 + aac (2ch))
Then I open the avs script and save as wave file to extract the audio track

the final wave can be playback from kmplayer , media player classic or windows media player as well

however having check the wave file it shown it is a 6 channels wave. Why ???? Actually the original aac audio is just a 2 channels audio track.

The problem right now is the conversion from wave to mp3 is unsuccess.

[buzzqw]

how do you analize the original audio ? with mediainfo or avinaptic ?

also, how you process the file ? via DirectShowSource ?

if so, make sure, you aren't upmixing in your decoder configuration

and about 6ch->mp3... isn't a issue at all, there are plenty of tools able to dowmixing your file and make an mp3.. just search it

BHH