On Thu, 2016-11-24 at 10:14 +0000, Mahendran, Dandapani (D.) wrote: > Following is the issue we are facing while using Pulseaudio8.0 along > with gstreamer pulsesink plugin. This issue was not seen while using > Pulseaudio4.0. > > Audio streaming started with an initial delay of 1.5 to 2 Secs. > Attached are the pulse & gst logs during the issue case. > > "route_andautonav" is the sink in which the problem is seen. > Configuration for this sink in default.pa is load-module module-null- > sink sink_name="route_andautonav"  format=s16le rate=44100 > channels=2. Can you reproduce the problem if you play some wav file with paplay, or is this specific to gstreamer? How do you measure the initial delay? I see you use an application called "aap_service" to play to the null sink (with 200 ms latency) and record from the null sink's monitor with av_dsp (with 11.61 ms latency). Does av_dsp play the recorded audio to some speakers so that you can hear when the audio starts playing? > Audio is streamed at 44.1kHz/Mono from gsteamer side. Re-sampler is > getting activated in pulseaudio. Even if we convert this stream to > stereo before passing to pulse, to avoid re-sampler, issue persists. That's to be expected. Resampling doesn't require large buffers, so it can't cause large latencies. -- Tanu https://www.patreon.com/tanuk
