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MP4 Definition :
It is
mpeg4
format file
with file extension *.mp4.
1.
To convert mp4 to mp3, please install the appropriate
mp4 decoder and audio decoder based
on Microsoft DirectShow.
2
Launch AUDIO/VIDEO TO MP3 MAKER, click the Open Media File button,
select an mp4 file.
3.
If you want to convert the whole
audio from the mp4 file, set the
Output File if needed, then click
the Convert button.
If
you want to convert some part of
audio from the mp4 file, drag the
slide bar directly, or click the
Play button to preview the media
file, set the Start Time and the End
Time. At last, click the Convert
button to start to convert mp4 to
mp3.
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