> > You could try > mplayer -ao alsa:device=spdif -ac hwdts > But I think there will be no difference. > > Maybe you can ask this question to the mplayer mailing list: > mplayer-users@xxxxxxxxxxxx > > Sorry I can't help you... > > Floris In fact, no sound... Eventually I will try mplayer list (another list to subscribe to... ;-( ) Could it be something related with sample rate, for example that on optical I can only send at 48000Hz, in general or due to some sort of limitation of recevier? I ask this because with a command I found: mplayer -v -vo null -ao alsa:device=spdif -afm hwac3 -rawaudio format=0x2000 -demuxer rawaudio dts_the_other_side_44khz.wav I don't get any sound, but the lock led switches on, the sound seems to go faster and file temrinates quickly.... and in output I get Trying to force audio codec driver family hwac3... Opening audio decoder: [hwac3] AC3/DTS pass-through S/PDIF dec_audio: Allocating 8192 bytes for input buffer. dec_audio: Allocating 16384 + 65536 = 81920 bytes for output buffer. No accelerated IMDCT transform found hwac3: switched to AC3, 80000 bps, 48000 Hz AUDIO: 48000 Hz, 2 ch, ac3, 80.0 kbit/5.21% (ratio: 10000->192000) Selected audio codec: [hwac3] afm: hwac3 (AC3 through S/PDIF) ========================================================================== Building audio filter chain for 48000Hz/2ch/ac3 -> 0Hz/0ch/??... and the same is true for the mkv files: AUDIO: 48000 Hz, 2 ch, ac3, 768.0 kbit/50.00% (ratio: 96000->192000) ------------------------------------------------------------------------------ This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user