iMac G5 and AC3 passthrough via optical out?

[chain]

I have asked it before, but still haven't got satisfying answers.

1) i have tried everything, but got no 5.1 sound from my Yamaha RX-V340RDS receiver. All i get is plain PCM stereo. I suppose it is a bug in vlc. Apple DVD player is only player that streams 5.1 from DVDs. I read that problems started with 10.3+, but can't confirm it.

2) is this problem dealt with?


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MacOS 10.3.7
iMac G5 1.8GHz

[chain]

ok. i give some debug info:

---------------------------
coreaudio debug: system has [1] device(s)
coreaudio debug: device [0] has name [Built-in Audio]
coreaudio debug: device [0] has [1] streams
coreaudio debug: supported format: [32000][lpcm][30][4][1][4][2][16]
coreaudio debug: supported format: [44100][lpcm][30][4][1][4][2][16]
coreaudio debug: supported format: [48000][lpcm][30][4][1][4][2][16]
coreaudio debug: supported format: [64000][lpcm][30][4][1][4][2][16]
coreaudio debug: supported format: [88200][lpcm][30][4][1][4][2][16]
coreaudio debug: supported format: [96000][lpcm][30][4][1][4][2][16]
coreaudio debug: supported format: [32000][lpcm][22][8][1][8][2][24]
coreaudio debug: supported format: [44100][lpcm][22][8][1][8][2][24]
coreaudio debug: supported format: [48000][lpcm][22][8][1][8][2][24]
coreaudio debug: supported format: [64000][lpcm][22][8][1][8][2][24]
coreaudio debug: supported format: [88200][lpcm][22][8][1][8][2][24]
coreaudio debug: supported format: [96000][lpcm][22][8][1][8][2][24]
coreaudio debug: supported format: [32000][cac3][30][6144][1536][0][2][16]
coreaudio debug: supported format: [44100][cac3][30][6144][1536][0][2][16]
coreaudio debug: supported format: [48000][cac3][30][6144][1536][0][2][16]
coreaudio debug: supported format: [64000][cac3][30][6144][1536][0][2][16]
coreaudio debug: supported format: [88200][cac3][30][6144][1536][0][2][16]
coreaudio debug: supported format: [96000][cac3][30][6144][1536][0][2][16]
coreaudio debug: getting device [0]
coreaudio debug: stream format: [48000][lpcm][22][8][1][8][2][24]
coreaudio debug: setting format: [48000][cac3][30][6144][1536][0][2][16]
main debug: using video output module "macosx"
main debug: got 8 direct buffer(s)
main debug: picture in 640x272, chroma 0x49343230 (I420), aspect ratio 101647:43200
main debug: picture out 640x272, chroma 0x59555932 (YUY2), aspect ratio 101647:43200
main debug: looking for chroma module
main debug: probing 6 candidates
main debug: using chroma module "i420_yuy2_altivec"
main debug: indirect render, mapping render pictures 0-7 to system pictures 8-15
main debug: waiting for thread completion
main debug: thread 35819008 (video output) created at priority 37 (src/video_output/video_output.c:443)
coreaudio debug: starting channel: [1]
coreaudio debug: using format: [48000][cac3][30][6144][1536][0][2][16]
coreaudio debug: device bufframe size: [1536]
coreaudio debug: device buffer index: [0]
main debug: using audio output module "coreaudio"
main debug: output 'spdi' 48000 Hz 3F2R/LFE frame=1536 samples/6144 bytes
main debug: mixer 'spdi' 48000 Hz 3F2R/LFE frame=1536 samples/6144 bytes
main debug: filter(s) 'a52 '->'spdi' 48000 Hz->48000 Hz 3F2R/LFE->3F2R/LFE
main debug: looking for audio filter module
main debug: probing 23 candidates
main debug: using audio filter module "a52tospdif"
main debug: found a filter for the whole conversion
main debug: looking for audio mixer module
main debug: probing 3 candidates
main debug: using audio mixer module "spdif_mixer"
main debug: input 'a52 ' 48000 Hz 3F2R/LFE frame=1536 samples/1792 bytes
main debug: channel mixer 'a52 '->'a52 ' 48000 Hz->48000 Hz 3F2R/LFE->3F2R/LFE
main debug: looking for audio filter module
main debug: probing 1 candidate
main warning: no audio filter module matching "a52tospdif" could be loaded
main error: cannot add user channel mixer a52tospdif

[The DJ]

We don't have the knowledge to fix these problems. Find us a CoreAudio developer.

[Guest]

main debug: looking for audio filter module
main debug: probing 1 candidate
main warning: no audio filter module matching "a52tospdif" could be loaded
main error: cannot add user channel mixer a52tospdif

That error doesn't seem to have anything to do with CoreAudio...

[unicode]

I am not sure if they are still required but. Perhaps a post or email to the whamb project would be a good idea http://www.whamb.com/?

just trying to help, PS G5's do not have audio from VLC this really needs to be looked into. Maybe they can help?

[The DJ]

VLC needs coreaudio developers to look into this. We lack the knowledge and the equipment to test these things.

[unicode]

Whamb Is an audio program which takes full advantage of core audio, my guess would be that someone working on Whamb would have programming expertise which may be useful in resolving these issues.