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

Daniel Worth pipemanmusic at gmail.com
Sat Oct 22 14:02:40 UTC 2011


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

> 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<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
> one 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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>>
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