ffmpeg screen capture WITH sound?

[bad sector]

hi,

I'm trying to capture screen WITH sound output from the onscreen
ZynAddSubFX synth keyboard (suse-12.1-kde4). The keyboard puts out sound
only if I set /dev/dsp as the 'OSS Wave Out Device' and
/dev/sequencer as the 'OSS Sequencer Deevice'. Loking under /dev neither
of these exist or anything like them.

This ffmpeg line captures video ok

ffmpeg -y -f x11grab -s 600x500 -i :0.0+200,50 -sameq /tmp/out.mpg

but anything such as

ffmpeg -y -f oss -i /dev/sdp -f x11grab -s 600x500 -i :0.0+200,50
-sameq /tmp/out.mpg

just reports

[oss @ 0x637640] /dev/sdp: No such file or directory
/dev/sdp: Input/output error

Seems like too many fingers and at least one in the wrong place :-)

I can't make sense out of the man page about this


TIA

[Loki Harfagr]

Sat, 03 Mar 2012 17:53:21 +0000, bad sector did cat :

> [oss @ 0x637640] /dev/sdp: No such file or directory
> /dev/sdp: Input/output error
>
> Seems like too many fingers and at least one in the wrong place :-)

fingers crossed at least ;-)
try and re-type it as /dev/dsp
yes, that funny "dsp" here stands for DSP (digital signal processor) :-)

[Loki Harfagr]

Sat, 03 Mar 2012 17:53:21 +0000, bad sector did cat :

correct, compare your two lines:
"only if I set /dev/dsp as ..."
"ffmpeg.*oss -i /dev/sdp ..."

>
> I can't make sense out of the man page about this

dsp stands here for Digital Signal Processor
(and there's nothing such as Switched Digits Pyting ;-)