2006-12 Converting To 3gp

Tuxmobli Article

Tuxmobil article says how to convert viedos to 3gp format.
From the article we can conclude some command lines :

mencoder undo.mpg -nosound -ovc lavc -lavcopts vcodec=mpeg4 -vop expand=176:144,scale=176:-2 -o movie.avi -ofps 12

mplayer -vo null -ao pcm -af resample=8000,volume=+4db:sc undo.mpg

ffmpeg -i movie.avi -i audiodump.wav -b 48 -ac 1 -ab 12 -map 0.0 -map 1.0 undo.3gp

There is also about some "Enhancements" :

mencoder undo.mpg -nosound -ovc lavc -lavcopts vcodec=mpeg4 -vf cropdetect
# the output like : crop area: X: 512..0  Y: 202..207  (-vf crop=-512:6:512:202)00 [0:0]
# implies that line
mencoder undo.mpg -nosound -ovc lavc -lavcopts vcodec=mpeg4 -vf crop=-512:6:512:20 -o cropped.avi -ofps 12
# now material is being rescaled
mencoder cropped.avi -nosound -ovc lavc -lavcopts vcodec=mpeg4 -vop expand=176:144,scale=176:144 -o movie.avi -ofps 1

Old stuff

Here is one of solutions http://slist.lilotux.net/linux/3gp/ - i know that it's in french. But forunatelly command line language is universal :).
So we can read these code lines from article:

mencoder undo.mpg -nosound -ovc lavc -lavcopts vcodec=mpeg4 -vop expand=176:144,scale=176:-2 -o movie.avi -ofps 12

mplayer -vo null -ao pcm -af resample=8000,volume=+4db:sc undo.mpg

ffmpeg -i movie.avi -i audiodump.wav -b 48 -ac 1 -ab 12 -map 0.0 -map 1.0 undo.3gp

There is something about patch problem, that I couldn't understand.
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