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Convert videos to 3gp for mobile phones

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This mencoder command line will convert videos to the 3gp format used in many mobile phones. Be sure to adjust the crop parameters as appropriate for the source video.

mencoder -vf crop=374:306:69:43,scale=176:144,hqdn3d=4:3:6 -af channels=1,resample=8000:0:2 -srate 8000 -oac lavc -ovc lavc -lavcopts vcodec=h263:mbd=2:vbitrate=160:acodec=libamr_nb:abitrate=12200 -of lavf -o out-file.3gp in-file.flv

A similar conversion can be done with ffmpeg:

ffmpeg -i in-file.mpeg -s qcif -vcodec h263 -acodec libfaac -ac 1 -ar 8000 -ab 32000 out-file.3gp

Edited by boatman9

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