Sebasti?n Lacuesta <sebastianlacuesta <at> gmail.com> writes: > mencoder AnInputFile.ext -o TheOutputFile.3gp -of lavf -oac lavc -ovc lavc > -srate 8000 -vf scale=176:144 -ofps 12 -channels 1 -lavcopts > vcodec=h263:acodec=libopencore_amrnb:abitrate=12200 Did you try FFmpeg? ffmpeg -i AnInputFile.ext -acodec libopencore_amrnb -s 176x144 -ac 1 -ar 8000 -ab 12.2k TheOutputFile.3gp To downmix, you need -af channels=1, not -channels 1 (see man mplayer). Carl Eugen
