Re: [LAU] [OT] Screen recording with jack: pain

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To: Lorenzo Sutton <lsutton@...>
Cc: <linux-audio-user@...>
Date: Saturday, October 22, 2011 - 2:02 pm

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This is the method I've used for screen casts and it works great.
On Oct 20, 2011 3:15 PM, "Lorenzo Sutton" wrote:

> On 20/10/2011 22:48, Jeremy Jongepier wrote:

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This is the method I've used for screen casts and it works great.
On Oct 20, 2011 3:15 PM, "Lorenzo Sutton&qu=
ot; <lsutton@libero.it> wrot=
e:
On 20/10/2011 22:48, Jeremy Jongepier wrote:

On 10/20/2011 10:35 PM, Lorenzo Sutton wrote:

Once upon a time I could record fine with (gtk)recordmydesktop selecting
jack... then jack audio recording seems to be broken (in Ubuntu and now
in Debian (wheezy)) with funky errors since quite a while.

Then I had hacked a couple of script using ffmpeg with jack support...
which of course involves compiling ffmpeg with jack enabled (and
recording is a bit clumsy as you have to manually connect the jack
client to ffmpeg jack client then cut that boring part from the video
etc.)

I was wondering what people's setup for (especially on debian) are, and=

if any simple solution currently exists.

Lorenzo

Hi Lorenzo,

Maybe this Wiki page could be helpful:
http://wiki.linuxaudio.org/wiki/screencasttutorial

Thanks Jeremy! Interesting approach... The Xephyr part is neat:
Although on debian you need to compile ffmpeg for x264 support, so maybe on=
e might as well compile it with jack?

Here's my one-liner for ffmpeg.

ffmpeg -f jack -ac 2 -i ffmpeg -f x11grab -r 30 -s 1280x800 -i :0.0 -acodec=
pcm_s16le -vcodec libx264 -vpre lossless_ultrafast -threads 0 output.avi

Lorenzo

Best,

Jeremy
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Messages in current thread:
[LAU] [OT] Screen recording with jack: pain, Lorenzo Sutton, (Thu Oct 20, 8:35 pm)
Re: [LAU] [OT] Screen recording with jack: pain, Jeremy Jongepier, (Thu Oct 20, 8:48 pm)
Re: [LAU] [OT] Screen recording with jack: pain, Lorenzo Sutton, (Thu Oct 20, 9:15 pm)
Re: [LAU] [OT] Screen recording with jack: pain, Daniel Worth, (Sat Oct 22, 2:02 pm)