The 3G2 or 3GPP2 file format is a video container format, very similar to the 3GP format. The difference is that 3G2 can store some additional audio streams like EVRC. 



convert 3g2 to
audio
aac
ac3
flac
m4a
mp3
ogg audio
wav
wma
image
gif
video
3gp
avi
flv
mkv
mov
mp4
mpg
mxf
ogg video
rm
swf video
ts
vob
webm
wmv