[MPlayer-users] How can I stop mplayer from buffering my audio?

[Stefan Thomas]

How here is how I got it working:

#!/bin/sh

# Path to sox
SOX=/usr/bin/sox

# V-Box devices
VBOX_AUDIO=/dev/dsp2
VBOX_VIDEO=/dev/video1

# Your regular sound card in ALSA
ALSA_OUTPUT=hw:0,0

start-stop-daemon --start --quiet --exec $SOX -- -r 48000 -w -c 2 -t 
ossdsp $VBOX_AUDIO -t alsa $ALSA_OUTPUT -q &
gmplayer tv:// -tv 
driver=v4l2:width=720:height=404:normid=0:input=1:device=$VBOX_VIDEO:noaudio 
-vf crop=672:368:26:18 -nolirc -fs $*
start-stop-daemon --stop --quiet --exec $SOX


More info here:
http://mcentral.de/wiki/index.php/XCM/VboxWii#Step_4:_Adding_sound.21

Stefan Thomas schrieb:
> Ok, makes sense, but if I just remove those options I get no sound at 
> all, because mplayer no longer even considers initializing any audio 
> whatsoever.
> 
> While mplayer is running in this way however I can enter this on a 
> different console and I'll hear sound:
> 
> arecord -f dat -D hw:2,0 | aplay
> 
> So the snd_usb_audio device is outputting. It's just not getting routed 
> to my sound card. Do you think a custom .asoundrc could fix that? Should 
> I be asking on the ALSA mailing list?
> 
> Cheers!
> 
> Stefan
> 
> 
> Rich Felker schrieb:
>> On Thu, Nov 08, 2007 at 04:54:57AM +0000, Stefan Thomas wrote:
>>> I'm using this command to capture a stream from my Wii and display it:
>>>
>>> mplayer tv:// -tv
>>> driver=v4l2:width=720:height=404:input=1:device=/dev/video1:forceaudio:alsa:audiorate=48000:adevice=hw.2,0:immediatemode=0 
>>>
>>> -ao alsa -vf crop=672:368:26:18 -nolirc -fs
>>>
>>> Unfortunately I get about one second of latency, which for playing games
>>> is a big problem.
>> Get rid of the immediatemode=0 and forceaudio option, and all
>> audio-related options. In TV mode, the audio is supposed to be looped
>> thru physically, not captured and played back. Capture and playback
>> will necessarily give unacceptable latency for gaming use.
>>
>> Rich