[gst-devel] JACK Audio Dropouts

[Tristan Matthews]

Esben Stien wrote:
> Yes, if I leave out the sync=false part on the jackaudiosink module,
> it only plays half a second and then stops, just sitting there,
> outputting no audio.
>
> I did however try this: 
>
> nice --15 gst-launch filesrc location=audiodump.wav ! decodebin ! audioconvert  ! audioresample ! jackaudiosink sync=false
>
> Now it plays the audio fine, but using very much CPU. The audio is
> playing perfectly. There seems to be some scheduling problems here. Is
> gst-launch not requesting proper scheduling priorities?.
>
>   
You may need a queue element somewhere in your launch line. Also I would 
recommend writing a C program to
build and run your launch-line instead of using gst-launch, as 
gst-launch is primarily used for debugging. You can also
try

gst-launch -v filesrc location=audiodump.wav ! decodebin ! audioconvert  ! audioresample ! jackaudiosink sync=false

or

GST_DEBUG=3 gst-launch -v filesrc location=audiodump.wav ! decodebin ! audioconvert  ! audioresample ! jackaudiosink sync=false


to get more debugging info. I have an example of a working jackaudio 
pipeline here:

https://trac.sat.qc.ca/trac/miville/browser/trunk/prototypes/gstreamer/shellScripts/jackHarmonics.sh?rev=195

-Tristan

-- 
Tristan Matthews
Société des arts technologiques [SAT]
email: tristan at sat.qc.ca
web: http://www.music.mcgill.ca/~tmatthews