rdefelice;312569 Wrote: > I am also experiencing this issue. I can second that I believe it has > to do with the transcoding of the audio on the server side. In my > setup, I've got two players: a duet receiver and squeezeslave running > on my media center pc that also runs SqueezeCenter. > > Every AAC file I play on the duet receiver sounds fine (no transcoding > on the server), but I hear a hiss when I play it via squeezeslave > (which requires the server to transcode the AAC to MP3 before sending > it to the player). > > I've tried upping the LAME quality setting, but it has no effect. > Anyone have any ideas? > > Specifics on my setup: > SqueezeCenter/squeezeslave: > Gentoo Linux > SqueezeCenter 7.0 > squeezeslave 0.7.5 > LAME 3.97 > > relevant parts of my convert.conf: > > mov mp3 * * > [faad] -w -f 2 $FILE$ | [lame] --resample 44100 --silent -q > $QUALITY$ -b $BITRATE$ -r - - > mov wav * * > [mplayer] -novideo -ao pcm:nowaveheader:file=/dev/fd/4 $FILE$ > 4>&1 1>/dev/null > mov aif * * > [mov123] $FILE$
I've done a bit more research, and I now believe that faad may be to blame. I'm running version 2.0-r13, and while playing around with it on the command line I noticed that it outputs differently depending on whether you give it the option to write the output to stdout or let it write the file to disk itself. I was able to get a clean transcode to mp3 from AAC by running the following commands: faad song.m4a cat song.wav | lame --silent -q 8 -b 192 - song.mp3 However, when I run this, I get an mp3 with the aforementioned background static: faad -w song.m4a | lame --silent -q 8 -b 192 - song.mp3 So I now believe the problem is introduced when faad is told to output to stdout rather than to write to a file. Can anyone recommend a version of faad or an equivalent binary that outputs cleanly to stdout? -r -- rdefelice ------------------------------------------------------------------------ rdefelice's Profile: http://forums.slimdevices.com/member.php?userid=15902 View this thread: http://forums.slimdevices.com/showthread.php?t=48877 _______________________________________________ discuss mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/discuss
