[MPlayer-users] Watching live TV --> make artificial sound delay

[D Richard Felker III]

On Mon, Mar 22, 2004 at 10:28:41PM +0100, boer Krelis wrote:
> Hi there, 
> 
> I've finally got my Marvel G400 going. Watching TV on the PC is great...
> except for the delay in the video. Video and audio are out of sync
> because the line-in audio is "live", whereas the video-decoding from the
> tuner takes about half a second (don't ask me why). 
> 
> So, I'd like to buffer half a second of audio before playing the audio.
> I've tried
> mplayer -af delay=1000:1000:1000:1000:1000 -vo xv -tv
> driver=v4l:input=2:norm=PAL:chanlist=europe-west:channel=E7:mjpeg:decim
> ation=2:quality=60:forceaudio:alsa:immediatemode=0 tv://
> 
> As far as I understand, immediatemode=0 should mean capturing audio
> instead of routing it through ALSA, and -af delay 1000:blabla should
> delay the sound by 1000 ms for all speakers.
> Sadly, there was no resulting audio delay. I've also tried -aop delay=1,
> to no avail.
> 
> I'm using a SBLive with Alsa 1.0.3b, vanilla-kernel-2.25 and
> mplayer-1.0pre3-3.3.3.
> 
> Is there a way to make an audio delay in MPlayer? Getting ALSA to delay
> the audio from line-in would be great, too.

No, immediatemode=0 does not work and delaying audio in the soundcard
is impossible since it's analog. The proper fix is to eliminate the
stupid video delay, since it makes it impossible to use MPlayer for
playing video games thru tv-in too.

Rich