Robin Gareus | 22 Aug 14:33 2014

[LAU] [ANN] xjadeo 0.8.0


Xjadeo is a video player that displays a video-clip in synchronized to
an external time source (MTC, LTC, JACK-transport).

http://xjadeo.sf.net/

-=-

Greetings Soundtrack Designers and fellow Multimedia Artists,

Xjadeo version 0.8.0 just came out and brings a lot of significant
changes. Most notably:

  * openGL display
  * video-frame indexing
  * built-in UI / context menu

With openGL, video-scaling is now performed in hardware and playback
synchronized to the screen's vertical refresh (if the hardware permits
that; most graphics cards do). This is the new default display and
supersedes prior platform-specific video outputs (XVideo, X11/imlib2,
SDL, quartz, which are still available via the --vo option and also used
a fallback).

Video files are now scanned and indexed on load which provides for
reliable seeking to video frames for a wide variety of codecs where
frame-accurate seeking was not possible with earlier versions of xjadeo.
This also acts as a guard to detect and refuse broken video files early on.

User interaction has been overhauled, most notably by adding a menu that
(Continue reading)

Egor Sanin | 21 Aug 17:38 2014
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[LAU] [LAD] [LAA] hrec

Hi folks,

I've been working on and off for the last little while on a command
line recording utility.  It's really basic and the code is pretty
ugly.  It exists partly because in my lazy search I couldn't find
anything that satisfied my particular need, and also because it was
interesting.  I just made a first release, so you could try it if you
like.

The program is called hrec, it's basically a curses front end to a
very limited subset of ecasound's functions.

Code is here:
https://sourceforge.net/projects/hrec/

AUR package is here:
https://aur.archlinux.org/packages/hrec/

I'm planning to do change it soon, but the basics will remain the
same.  Mostly I plan to remove the playback functionality, as it's
almost useless -- plenty of other software to do it much better.  Also
I need to migrate the code to Python 3, but I'm getting stuck on the
python ecasound bindings.  In the couple of (admittedly not very
thorough) attemps I've made I ran into problems with the current pyeca
module.  Any advice would be appreciated.  Anyway I thought I might as
well release it now and get some feedback.

I hope someone finds hrec useful!

Criticism and insults are also welcome.
(Continue reading)

Andrew C | 19 Aug 17:49 2014
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Re: [LAU] Internal speaker set as default playback, not my usb soundcard.

Excellent, thanks for that tip, Phillip! Got it fixed now.

Put "autospawn = no" into $HOME/.config/pulse/client.conf, killed PA as you suggested and everything worked as expected, alsamixer controls the volume (.asoundrc works perfectly again) and mplayer/flash/MOCP plays through my usb card.

Andrew.


On Tue, Aug 19, 2014 at 2:47 PM, Philipp Überbacher <murks-BoOA+NLF7L6xbKUeIHjxjQ@public.gmane.org> wrote:
On Tue, 19 Aug 2014 13:48:22 +0100
Andrew C <countfuzzball <at> gmail.com> wrote:

> Speaking of .asoundrc, I had set up my like so (which predictably no
> longer works, even though my usb card is still at index 0):
>
> pcm.!default {
>     type            plug
>     slave.pcm       "softvol"   #make use of softvol
> }
>
> pcm.softvol {
>     type            softvol
>     slave {
>         pcm         "dmix"      #redirect the output to dmix (instead
> of "hw:0,0")
>     }
>     control {
>         name        "PCM"       #override the PCM slider to set the
> softvol volume level globally
>         card        0
>     }
> }
>
> I doubt this would cause a mess up (even so, even *that* is no longer
> working, my soundcard ignores any changes made by alsamixer).
>
> At this point, would I guess there's some pulseaudio weirdness
> happening? Any ideas how I can use alsa straight up, unless I've
> somehow been using a pulseaudio-alsa wrapper this entire time.
>
> To my mind, it makes absolutely no sense why stuff would be playing
> out of Card 1, and not Card 0. Or at least why that has suddenly
> changed to be the default with this upgrade.
>
> Andrew.

I'm not sure whether you get direct alsa access while PA is running.

You could disable pulseaudio and try again. I have configured PA
so that it is only ever started manually by me and I simply use
'pulseaudio --start' and 'pulseaudio --kill'. However, depending on
your distributions setup it might be a PITA to stop PA and keep it
stopped. You can use 'pulseaudio --check' to see whether it runs, it
returns 0 if it runs, 1 otherwise. Or just use 'pulseaudio --kill' and
see whether it throws an error or succeeds because something started PA
again. This can happen because PA is set to respawn or because some
program started PA on startup. That's a PITA I don't want to deal with,
hence my entirely manual setup.

Regards,
Philipp

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david | 19 Aug 09:52 2014
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Re: [LAU] [Bulk] Re: Audacity on Ubuntu 14.04 is REALLY unstable

Well, I've heard that Gnome 3's default configuration makes it a major 
resource hog - particularly for memory. Like KDE4. I avoid Gnome 3. Both 
it and KDE4 launch a bunch of system services that I think can really 
impact RT use.

Sorry, I don't know anything about how Fedora might be configured 
differently from Debian.

On 08/18/2014 12:12 PM, Sam Tuke wrote:
> For what its worth, audacity is unstable on Fedora with Gnome 3 as well.
> Routine crashes and corrupted recovery files make it a real headache to
> use. Maybe its the versions of the packages we're using?
>
> Sam.
>
> On 18 August 2014 20:07:49 CEST, david <gnome <at> hawaii.rr.com> wrote:
>
>     On 08/18/2014 04:45 AM, James Stone wrote:
>
>         On Mon, Aug 18, 2014 at 3:34 PM, Fons Adriaensen
>
>             On Mon, Aug 18, 2014 at 02:21:56PM +0200, Philipp √úberbacher
>             wrote:
>
>                 You can also try jack. Audacity uses jack in a very
>                 weird way, as soon
>                 as you roll audacity autoconnects to the first outputs
>                 it finds and
>                 disconnects once you stop rolling,
>
>
>             That's only one of the many apps that claim to support Jack but
>             get it completely wrong. In many cases, but not always,
>             portaudio
>             is to blame.
>
>         Perso nally I think the way Audacity handles audio on linux is
>         very bad
>         - doesn't manage to do Alsa, Jack or Pulseaudio right as far as
>         I can
>         see (if I don't run jack it endlessly changes the sample rate on my
>         card - making lots of clicks and pops as it takes over 1 minute to
>         start up!). I tried discussing problems on their forums but to no
>         avail.
>
>
>     I use Audacity on 2 different machines, both 64-bit Debian Sid, with a
>     UCA-202 USB sound card on the laptop and the now-working-again (YAY!)
>     Audiophile on the desktop. With or without JACK, Audacity never changes
>     the sample rate as you mention above. Doesn't take a minute to start up,
>     either.
>
>     I think there's some more fundamental problem with your system setup
>     than Audacity. Maybe Audacity's difficulties handling audio just make it
>     more sensitive to the fundamental problem than other apps.

--

-- 
David W. Jones
gnome <at> hawaii.rr.com
authenticity, honesty, community
http://dancingtreefrog.com
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Andrew C | 19 Aug 06:03 2014
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[LAU] Internal speaker set as default playback, not my usb soundcard.

Hello all,

Recently did an upgrade to Ubuntu 14.04 from 12.04. All went well except I've encountered a very weird problem.

My usb audio is no longer the default sound card. I had to some some trickery (made snd-usb-audio=-1 and snd-hda-intel=-2) in /etc/modprobe.d/alsa-base.conf to get the usb card as #0 as listed by /proc/asound/cards and then I got all sound going out through my usb card. Fun fun fun.

Now with Ubuntu 14.04, my usb card is still listed as #0 in asound/cards, but mplayer defaults to my internal speakers when issued 'mplayer sound.wav'.

Also tried:
mplayer -Dalsa=hw=0.0 sound.wav
Plays through my usb soundcard

mplayer -Dalsa=hw=1.0 sound.wav
Plays through my internal speakers

mplayer -Dalsa=plughw sound.wav
Plays through my usb soundcard

mplayer -Dalsa=default sound.wav
Plays through my internal speakers.

Also I tried opening 'pavucontrol' fwiw and disabling the internal speaker. Playing a sound file without any other options via mplayer sends the sound through my usb soundcard.

This is really strange and perhaps I'm not entirely understanding all the "wonderfulness" that is alsa.

Cheers,

Andrew.
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Abram Hindle | 18 Aug 20:45 2014
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[LAU] Seeking computer musicians for a survey on how do computer musicians develop computer musical instruments or applications?

Hello,

I apologize for the intrusion but the linux audio users list hosts
exactly the people we are looking for: computer musicians who code.
We're trying to figure out how software engineering research can help
computer musicians or if computer musicians need any help.

Are you a computer musician? Do you code in languages geared towards
music (e.g., Pure Data, Max MSP, Chuck, SuperCollider, etc.) or make
music in other programming languages like C, Java, C++, Javascript, etc.?

If so, we would like to hear from you! We the PIs, Gregory Burlet and
Abram Hindle, are from the Department of Computing Science at the
University of Alberta and are conducting a survey of computer musicians
to investigate how this demographic of software developers program
musical instruments or applications.

Please visit the survey invitation website
<http://webdocs.cs.ualberta.ca/%7Egburlet/musiccoders_survey.html> and
click the "I consent, take me to the survey" button to complete the
survey (if you consent). The survey will take 5 to 10 minutes.

http://webdocs.cs.ualberta.ca/%7Egburlet/musiccoders_survey.html

Thanks for your time!

Gregory Burlet and Abram Hindle
Graduate Student & Assistant Professor
Department of Computing Science
University of Alberta
CANADA
Will Godfrey | 18 Aug 20:17 2014
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[LAU] Play Time

Amongst all the 'stuff' I still sometimes get the chance to actually produce
some music so thought I'd share a fairly recent one.

I describe it as 'Chord progressions, inversions and melodic conversations' -
hence:

http://www.musically.me.uk/music/Inversations_C.ogg

Or if you want the 'other' format change the extension to mp3

This is produced by one instance of Yoshimi, with Rosegarden and me playing on
a dumb MIDI keyboard.

I first set up a simple 1 bar loop as a click track and played the chords. Then
played the bass line to this. When doing this I always play the base an octave
up so I can hear it more clearly, then shift it down.

Disposing of the click I then played the lead parts, and finally the counter
melodies.

After a little bit of shuffling instruments I recorded the whole lot in one
pass.

--

-- 
Will J Godfrey
http://www.musically.me.uk
Say you have a poem and I have a tune.
Exchange them and we can both have a poem, a tune, and a song.
Alan McKay | 18 Aug 16:40 2014
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[LAU] Ubuntu Studio (was: Audacity unstable)

Hey folks, I'm thinking I might just install Ubuntu Studio tonight and
run with that.

The website does not seem to tell me the essential differences from Ubuntu.

Which desktop is used?
Are there any other major differences I'll notice aside from this?

thanks,
-Alan

--

-- 
"Don't eat anything you've ever seen advertised on TV"
         - Michael Pollan, author of "In Defense of Food"
Menno | 18 Aug 13:32 2014
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[LAU] Delta1010: S/PDIF out has sync but no audio

Hi.

i use Kubuntu 14.04. (KXStudio in fact)
i have a M-Audio Delta 1010 soundcard. I see that my digital amp gets a
syncsignal, when i use VLC for example, but i hear no sound.

Is there a solution for this?

thanks!

--
View this message in context: http://linux-audio.4202.n7.nabble.com/Delta1010-S-PDIF-out-has-sync-but-no-audio-tp92201.html
Sent from the linux-audio-user mailing list archive at Nabble.com.
Alan McKay | 17 Aug 16:07 2014
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[LAU] Audacity on Ubuntu 14.04 is REALLY unstable

Hi folks,

I took Audacity out of apt and wow is it unstable.  Constantly
hanging.  At least it is able to recover most of the time after a
restart - except for once last night where I lost my LP rip.  It was
bearable before then but now I want a better solution.

Is anyone else having this problem?
Any solution in mind?
Should I pull down one of the daily builds from Audacity and try it?
Or build from source or something?

My Ubuntu is fully updated.

I was also thinking of trying CentOS7 to see how that does.

thanks,
-Alan

--

-- 
"Don't eat anything you've ever seen advertised on TV"
         - Michael Pollan, author of "In Defense of Food"
david | 17 Aug 10:04 2014
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[LAU] JACK not working with Audiophile 2496 anymore

I get these messages from JACK when I start it using QJackCtl, trying to 
use my AudioPhile 2496. This is running on Debian Sid, uname -a reports 
"3.14-2-amd64 #1 SMP Debian 3.14.15-2 (2014-08-09) x86_64 GNU/Linux" 
(but I was getting the same error on kernel 3.02.4 before that.) I am a 
member of the audio group.

JACK starts and runs fine if I pick the "default" interface, but that 
doesn't play any audio through the Audiophile. (I have no idea what it's 
playing through.)

While parts of Pulse are installed, according to "killall pulse" Pulse 
audio is not running. Trying to remove the installed Pulse packages 
wanted to also remove a bunch of other apps, such as csound, GIMP, some 
KDE4 apps, etc.

I found an old thread on a forum where the poster said installing 
"dbus-python" fixed it, but the closest package I could find similar to 
that name is "python-dbus" and it's installed.

This is a fresh Debian Sid install and my first experience with Debian's 
move to systemd instead of good old reliable init, so could that be 
messing things up? Or that it's using PAM (my prior Debian experience 
didn't include PAM) and htop shows a number of (sd-pam) processes running)?

jackdmp 1.9.10
Copyright 2001-2005 Paul Davis and others.
Copyright 2004-2014 Grame.
jackdmp comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details
JACK server starting in realtime mode with priority 10
self-connect-mode is "Don't restrict self connect requests"
audio_reservation_init
Acquire audio card Audio2
creating alsa driver ... 
hw:M2496|hw:M2496|512|2|48000|0|0|nomon|swmeter|-|32bit
configuring for 48000Hz, period = 512 frames (10.7 ms), buffer = 2 periods
ALSA: final selected sample format for capture: 32bit integer little-endian
ALSA: use 2 periods for capture
ALSA: final selected sample format for playback: 32bit integer little-endian
ALSA: use 2 periods for playback
21:08:30.707 Could not connect to JACK server as client. - Overall 
operation failed. - Server communication error. Please check the 
messages window for more info.
JackPosixProcessSync::LockedTimedWait error usec = 5000000 err = 
Connection timed out
Driver is not running
Cannot create new client
Cannot read socket fd = 14 err = Success
CheckRes error
JackSocketClientChannel read fail
Cannot open qjackctl client
ALSA: poll time out, polled for 15999022 usecs
JackAudioDriver::ProcessAsync: read error, stopping...
21:10:14.445 JACK is stopping...
Jack main caught signal 15
Released audio card Audio2
audio_reservation_finish
21:10:14.463 JACK was stopped successfully.
21:10:14.463 Post-shutdown script...
21:10:14.463 killall jackd
jackd: no process found
21:10:14.879 Post-shutdown script terminated with exit status=256.

aplay -l lists the following audio devices:
**** List of PLAYBACK Hardware Devices ****
card 0: SB [HDA ATI SB], device 0: VT1828S Analog [VT1828S Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
card 0: SB [HDA ATI SB], device 1: VT1828S Digital [VT1828S Digital]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
card 0: SB [HDA ATI SB], device 2: VT1828S Alt Analog [VT1828S Alt Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
card 2: M2496 [M Audio Audiophile 24/96], device 0: ICE1712 multi 
[ICE1712 multi]
   Subdevices: 1/1
   Subdevice #0: subdevice #0

These problems originally began when I had to reset the BIOS, which 
re-enabled the motherboard audio. I tried disabling the motherboard 
audio, but then ALSA wouldn't load at all.

My replacement desktop system is too modern to support such old 
equipment as the Audiophile, it would be nice to have it working in the 
old desktop system where it worked fine for many years, but now no 
longer works.

--

-- 
David W. Jones
gnome@...
authenticity, honesty, community
http://dancingtreefrog.com

Gmane