Thank you for your time and your answers. I found a way to do this job with mencoder...
$ mencoder -aid 2 -oac copy -ovc copy original.avi -o result.avi Where the number "2" represents the audio track to be obtained in the result avi file. This link explain this and other stuff with mencoder, ffmpeg and avisync / avimerge [spanish] http://crysol.inf-cr.uclm.es/node/236 2007/12/17, Maik Holtkamp <[EMAIL PROTECTED]>: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hi, > > 0n 07/12/[EMAIL PROTECTED]:43 Martin Guy told me: > > > 2007/12/15, Juan José (ShIxIMaRu) <[EMAIL PROTECTED]>: > > > I have several avis with 3 > > > audio channels and i want to delete 2 of the audio streams and keep > > > only one of them. > > > > I think not. There is -E 0,0,1 to reduce it to mono by averaging, but > > I suppose Juan's mixture of the terms "channel", "stream" and > "track" focused you to a different understanding. > > If I got him right, he should use avisplit/avimerge to get the > job done. > > Please keep in mind that there is nothing worse out there in the > wild world of broken files than those that end in .avi (tm). > > - -- > bye maik > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.6 (GNU/Linux) > > iD8DBQFHZonP0Bn175Anq4gRAuzJAKCDRiWGjRJy3nLpqSiqy/J9PGsqiQCff2gO > etHOZRI3M6DYKIR0AINNnmM= > =NJ1f > -----END PGP SIGNATURE----- > > -- Juan José Cubeiro Becerra (ShIxIMaRu)