[PlanetCCRMA] cinelerra + alsa = Segfault

[rob switzer]

On Tue, 2004-08-10 at 13:49, R Parker wrote:

Ron,

	I'm running FC1 on a laptop w/ built-in intel 82801CA sound.  I was
able to put an mp3 file on the timeline and play it using the alsa
driver.

	To date, I haven't used Cinelerra much for audio, but so far everything
that I've needed worked except for ac3 rendering/export.

	Just thought of something -- the only time I had an audio related crash
w/Cinelerra was when I had more than 2 output channels specified in the
preference dialog.  Since my soundcard in this machine is stereo only, I
assumed at the time it was because of the mismatch between number of
devices.  And if memory serves, this happened using the OSS drivers. 
But setting up multiple channels (more than 2) might be the issue -- do
multiple channels work OK under OSS?

	If I have time later this afternoon, I'll test some using alsa on a
machine w/ a multichannel card (Delta 1010) and if anything weird
happens, I'll let you know.

	Good luck!

best,
rob 


> Hi Rob,
> 
> Are you running FC1, RH9, or?
> 
> I'm running RH9 and using an RME 9652.
> 
> It occurs to me that Cinelerra may not have audio
> import and convert capabilities so I need to confirm
> that I've specified the correct bit depth for the
> audio file that I'm trying to work with. Hmmm, that
> doesn't seem to be the problem.
> 
> I'll experiment a little more later today.
> 
> > 	I'm running the latest planet releases of both
> > cinelerra and alsa and
> > I'm able to load up an audio file in Cinelerra and
> > play it using the
> > alsa driver. The sound quality doesn't seem that
> > good
> 
> Have you tried running as user = root with Audio
> Playback Realtime selected in the preferences? That
> might be worth a try.
> 
> Ron
> 
>  -- there are more
> > pops and clicks than with the default OSS driver.
> > 
> > 	I'm using a Dell M50 w/the onboard audio.
> > 
> > 	I also tried jacklaunch with Cinelerra, with no
> > success -- Cinelerra
> > will open, but no audio will play.
> > 
> > hope this helps ...
> > 
> > best,
> > rob switzer
> > 
> > 
> > > Hi,
> > > 
> > > Just curious if anyone is having success using
> > > Cinelerra with the Alsa driver. It Segfaults for
> > me.
> > > 
> > > ron
> > > 
> > > 
> > > 		
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