[MPlayer-users] Problem with using alsa/hwac3

David Philippi lists at torangan.de
Mon Feb 10 17:56:49 CET 2003


I've finally managed to get hwac3 working nearly correct but there's one 
problem left: I get some occasional stutters. It's not jerky like in lacking 
cpu power or asynchron - the audio output simply stops for a short moment 
every 30-60 seconds. Since the digital display of my av-receiver goes out 
during that time too I guess that there's no output at all in those moments.
What I consider the most strange is that it's converting the audio to 8bit? I 
couldn't find anything about this in the docs and the output certainly 
doesn't sound like it's 8bit.

MPlayer 0.90rc4-3.2.2
Soundcard is SBLive! 

Mplayer options:

-ao alsa9 -ac hwac3

Mplayer output:

Checking audio filter chain for 48000Hz/2ch/16bit -> 48000Hz/2ch/8bit...
AF_pre: af format: 2 bps, 2 ch, 48000 hz, big endian AC3
AF_pre: 48000Hz 2ch AC3
alsa-init: testing and bugreports are welcome.
alsa-init: requested format: 48000 Hz, 2 channels, AC3
alsa-init: soundcard set to iec958:AES0=0x2,AES1=0x82,AES2=0x0,AES3=0x2
alsa9: 48000 Hz/2 channels/4 bpf/65536 bytes buffer/Signed 16 bit Little 
AO: [alsa9] 48000Hz 2ch AC3 (1 bps)
Building audio filter chain for 48000Hz/2ch/16bit -> 48000Hz/2ch/8bit...
[format] Sample format big endian AC3  not yet supported
Couldn't find matching filter / ao format!


options snd-pcm-oss snd_dsp_map=0 snd_adsp_map=2
alias char-major-116 snd
alias snd-card-0 snd-emu10k1
alias char-major-14 soundcore
alias sound-slot-0 snd-card-0
alias sound-service-0-0 snd-mixer-oss
alias sound-service-0-1 snd-seq-oss
alias sound-service-0-3 snd-pcm-oss
alias sound-service-0-8 snd-seq-oss
alias sound-service-0-12 snd-pcm-oss
options snd major=116 cards_limit=1 device_mode=0666
options snd-emu10k1 index=0

Bye David

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