linuxaudio.org

On 17/11/12 13:33, Atte wrote:

quoted text
> Hi

>

> I'm trying to capture a screencast of a jack2 client (renoise), but it

> seems recordmydesktop and jack2 doesn't work well together. Anything I

> should do different? Any alternative to recordmydesktop that I should

> try instead?

For me screen-capturing with jack seems terribly broken at the moment...

jack capture with (gtk)-recordmydesktop is broken since at least 1 year,

and seems related to the funky width and height values reported when you

use it with jack.
I had an ffmpeg (and newer avconv) script which worked very well until a

few months ago which is now also broken on my system (debian wheezy):
ffmpeg -f jack -ac 2 -i ffmpeg -f x11grab -r 30 -s 1280x800 -i :0.0

-acodec pcm_s16le -vcodec libx264 -preset ultrafast -threads 0 output.avi
Adapded from some blog online I can't recall. Actually it seems the X11

grabbing part is broken there, as recording a wav file through jack works.
I had tried gstreamer, but couldn't really get it to work (audio was

stuttery).
Lorenzo.
>

quoted text
> I'm running ubuntu 12.10...

>

> atte@blokhus:~$ jackd --version

> jackdmp 1.9.9

> Copyright 2001-2005 Paul Davis and others.

> Copyright 2004-2012 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

> jackdmp version 1.9.9 tmpdir /dev/shm protocol 8

>

> atte@blokhus:~$ recordmydesktop --version

> recordMyDesktop v0.3.8.1

>

> atte@blokhus:~$ recordmydesktop --use-jack renoise:output_01_left

> renoise:output_01_right

> Initial recording window is set to:

> X:-27984   Y:0    Width:29008    Height:768

> Adjusted recording window is set to:

> X:-27984   Y:0    Width:29008    Height:768

> Your window manager appears to be Xfwm4

>

>

> Detected compositing window manager.

> Reverting to full screen capture at every frame.

> To disable this check run with --no-wm-check

> (though that is not advised, since it will probably produce faulty

> results).

>

> Initializing...

> jack_client_new: deprecated

> Capturing!

> Failed to obtain Shared Memory segment!

>

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