On Wed, 24 Jun 2009, Ron wrote: > David Backeberg wrote: >> On Tue, Jun 23, 2009 at 3:31 AM, Ron<nha...@gmail.com> wrote: >>> >>> what software do i need to convert an mp3 to a g729 format? >> >> I'm not aware of a package to do it in one step. Sox can work with a >> large number of formats, but mp3 isn't one of them.
Sox can if it is compiled in. It isn't in CentOS. > hi sir, i'm ok if there's two step, may i know what softwares are used > for those steps? preferably conversion is via CLI I use: ) mplayer (if available) or "file" to determine if the file is an MP3. ) mpg123 to convert from MP3 to WAV (if needed). ) normalize so everything sounds about the same loudness. ) sox to make sure the channel count, sample size, "signedness" and sampling rate are correct. I'm only interested in WAV ("-c 1 -s -r 8000 -w"), SLN ("-c 1 -r 8000 -s -t raw -w"), and ULAW ("-c 1 -r 8000 -t ul"). I "wrap" them all up in a script named "transcode.sh" to make it easy for me and my users to convert any old bunch of files with a single command. Sox can't do g729, but Asterisk can using the CLI command file convert <file_in.format> <file_out.format> so you could extend the concept. > my users are not technically knowledgeable on different file formats and > mp3's and wav are mostly what the users know. when they upload an MP3 i > would like to convert it and save it on different formats (e.g. g729 and > g711). thanks If you get a choice, take the WAV and convert it to whatever formats you need -- skip MP3 altogether. Thanks in advance, ------------------------------------------------------------------------ Steve Edwards sedwa...@sedwards.com Voice: +1-760-468-3867 PST Newline Fax: +1-760-731-3000 _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users