ffmpeg doesn't record sound from WinTV.

Frank J. Beckmann frank at barda.agala.net
Fri Dec 23 19:40:53 PST 2005


I can't record sound from my Hauppage WinTV with ffmpeg. The audio out of the 
tvcard is connected to the line in of the soundcard. I can record sound with 
moTV (XawTV) but not with ffmpeg. ffmpeg records sound if I choose another 
input device like the cd in. It looks like ffmpeg is forgetting to the the 
tvcard to send it's sound to the audio card. ffmpeg tells me that it records 
the sound, but all it gets is silence.

ffmpeg -target dvd -vd /dev/bktr -ac 2 -tvstd PAL /var/tmp/fft.mpeg

What am I missing here?

pcm0: <nVidia nForce4> port 0xdc00-0xdcff,0xe000-0xe0ff mem 
0xca103000-0xca103fff irq 23 at device 4.0 on pci0
pcm0: <Avance Logic ALC850 AC97 Codec>
bktr0: <BrookTree 878> mem 0xca000000-0xca000fff irq 16 at device 6.0 on pci5
bktr0: Hauppauge Model 61324 D229
bktr0: Detected a MSP3415D-A2 at 0x80
bktr0: Hauppauge WinCast/TV, Philips PAL I tuner, msp3400c stereo, remote 

dev.bktr.0.%desc: BrookTree 878
dev.bktr.0.%driver: bktr
dev.bktr.0.%location: slot=6 function=0
dev.bktr.0.%pnpinfo: vendor=0x109e device=0x036e subvendor=0x0070 
subdevice=0x13eb class=0x040000
dev.bktr.0.%parent: pci5

Mixer vol      is currently set to  88:88
Mixer pcm      is currently set to  66:66
Mixer speaker  is currently set to  88:88
Mixer line     is currently set to  82:82
Mixer mic      is currently set to  93:93
Mixer cd       is currently set to  88:88
Mixer rec      is currently set to  81:81
Mixer ogain    is currently set to  78:78
Mixer line1    is currently set to  90:90
Mixer phin     is currently set to  90:90
Mixer phout    is currently set to  84:84
Recording source: line


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