Floris, >From what I understand, you can fit only 2 uncompressed audio channels over a spdif connection. In order to handle more channels, it must be compressed and then transferred as a data stream, like DTS or AC3. Kyle On Wed, Jan 28, 2009 at 7:51 AM, Floris <jkfloris@xxxxxx> wrote: > Maybe a simple question, but is it possible to > play a 6 channel wav file over a spdif connection? > > > $aplay -L > > ... > iec958:CARD=Audigy2,DEV=0 > Audigy 2 ZS [2001], ADC Capture/Standard PCM Playback > IEC958 (S/PDIF) Digital Audio Output > ... > > sample file > http://www.halfgaar.net/media/chan-id.zip > > $aplay -D iec958 chan-id.wav > Playing WAVE 'chan-id.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, > Channels 6 > aplay: set_params:923: Channels count non available > > $mplayer chan-id.wav -ao alsa:device=spdif -channels 6 > MPlayer dev-SVN-r26940 > CPU: Intel(R) Pentium(R) 4 CPU 3.60GHz (Family: 15, Model: 4, Stepping: 3) > CPUflags: MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1 > Compiled with runtime CPU detection. > > Playing chan-id.wav. > Audio file file format detected. > ========================================================================== > Opening audio decoder: [pcm] Uncompressed PCM audio decoder > AUDIO: 44100 Hz, 6 ch, s16le, 4233.6 kbit/100.00% (ratio: 529200->529200) > Selected audio codec: [pcm] afm: pcm (Uncompressed PCM) > ========================================================================== > AO: [alsa] 44100Hz 2ch s16le (2 bytes per sample) > Video: no video > Starting playback... > A: 6.2 (06.2) of 6.0 (06.0) 0.2% > > aplay refuse to play the file while mplayer downmix the file and will > only play the front left and right channels > > Any dts or dolby digital dvd will play fine with mplayer -ao > alsa:device=spdif -afm hwac3. > > floris > > > ------------------------------------------------------------------------------ > This SF.net email is sponsored by: > SourcForge Community > SourceForge wants to tell your story. > http://p.sf.net/sfu/sf-spreadtheword > _______________________________________________ > Alsa-user mailing list > Alsa-user@xxxxxxxxxxxxxxxxxxxxx > https://lists.sourceforge.net/lists/listinfo/alsa-user > ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
