1 Nov
2017
1 Nov
'17
7:26 p.m.
On Wed, November 1, 2017 5:31 am, David Woodfall
wrote:
I've done multitrack recording before using ardour, jack, zynaddsubfx,
a midi (usb) keyboard, non sequencer and some other stuff. I recorded
at 96k (I should have use 48k), but I didn't get anything like the
xruns I am getting with mplayer.
But that was a few years ago, on a different kernel, which IIRC was
setup for low latency. I guess I'll have to do some kernel compiling
again to see if it helps. It's been a while.
Dave
What I've is that the xruns are all between
mplayer and jackd on my
laptop. The networking side is fine.
Do you get under-runs when running jackd with ALSA backend locally on your
laptop? Some applications have really poorly implemented jack support. I
cannot speak to the quality of mplayer specifically, but larger buffer
sizes may help (e.g. -n1024 instead of -n128).
Some applications also try to automatically perform sample rate conversion
if the output does not match, e.g. you try to play a video file with 48k
rate audio track but jackd is set to 44.1k rate, if mplayer tries to SRC
the soundtrack the CPU utilization is going to increase substantially.
--
Chris Caudle