On 29.01.2018 14:44, NicoHood wrote: > On 01/29/2018 01:39 PM, Georg Chini wrote: >> On 29.01.2018 12:52, Nico wrote: >>> Hi, >>> I want to capture the audio stream of my TV with my PCI-E Toslink sound >>> card and play it back on my usb XLR soundcard. The reason why I do that >>> is to use my own music boxes rather than the TV speakers. With toslink + >>> XLR I do not have problems with ground loops etc. >>> >>> I am using the pulseaudio loopback module with its default >>> configuration. The problem is, that the delay between picture and sound >>> is about one second off, and the longer I wait, the more delay it gets >>> (30 seconds and more). It is no usable like this. >>> >>> I tried to play with the latencies of source, sink and the tv delay >>> itself without sucess. I also tried streaming with pacat directly as >>> described here: >>> https://thelinuxexperiment.com/fix-pulseaudio-loopback-delay/ >>> >>> I also tried to change different parameters of the loopback module or >>> the sources/sinks, but that did not help. I never changed any global >>> pulseaudio config to avoid larger configuration issues. The CPU usage of >>> pulseaudio is at 3% with the loopback module >>> >>> Can anyone help me to get rid of this lag? >>> >> Hi Nico, >> >> which version of PA are you using? Can you provide logs? >> >> Regards >> Â Â Â Â Â Â Â Â Â Â Â Â Georg >> > Hi Georg, > oh sure I completely forgot: > > pulseaudio 11.1-1 (Arch Linux) > uname -a: Linux zebes 4.14.15-1-ARCH #1 SMP PREEMPT Tue Jan 23 21:49:25 > UTC 2018 x86_64 GNU/Linux > > Here is a logfile: > LANG=C pulseaudio -vvvv --log-time=1 > ~/pulseverbose.log 2>&1 > https://gist.github.com/NicoHood/85976f426e1621e599253ee1a95230dd > > Regards > Nico This is weird. It looks like the source sample rate is so much higher than the sink rate that module-loopback can't adapt. No idea why this happens. Does it work with another input?
