Well, thanks for the -af channels=1 detail, it "worked" for files with multiple channels, but sound still is fast. Actually, now I use ffmpeg to convert to 3gp, but first I need to decode the original file using mencoder because it seems to support more formats. I have a batch process that receives a video and then it needs to convert it to 3gp. Now I convert the original video to flv (I needed the video in that format before too) using mencoder and then I encode it to 3gp using ffmpeg. I don't know if flv is a good choice as intermediate format. If I could use mencoder directly, I guess the process would be faster, without the need of an intermediate file. I have reported it some time ago: http://bugzilla.mplayerhq.hu/show_bug.cgi?id=1603 I haven't see any resolution, it leaves as "NEW". Is there any better choice than flv as intermediate format/audio codec/video codec? Thanks! 2010/3/9 Carl Eugen Hoyos <cehoyos at ag.or.at> > 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 > > _______________________________________________ > MPlayer-users mailing list > MPlayer-users at mplayerhq.hu > https://lists.mplayerhq.hu/mailman/listinfo/mplayer-users
