[linux-dvb] No audio with Hauppauge WinTV-HVR-900 (R2)

Mauro Carvalho Chehab mchehab at infradead.org
Thu Jan 8 02:14:18 CET 2009

On Wed, 7 Jan 2009 20:31:27 +0100
Nicola Soranzo <nsoranzo at tiscali.it> wrote:

> Hi everybody,
> I have a Hauppauge WinTV-HVR-900 (R2) USB stick, model 65018, which has 
> Empiatech Em2880 chip, Xceive XC3028 tuner and Micronas drx397x DVB-T 
> demodulator.
> On the same laptop I have an Intel High Definition Audio soundcard and a Syntek 
> DC-1125 webcam.
> Both analog and DVB-T work under Windows.
> I'm using v4l-dvb from hg repo over Fedora 10 kernel and I have 
> correctly installed xc3028-v27.fw firmware.
> I know that DVB-T chip is not yet supported, so I tried with analog TV.
> I can see analog video, but no audio with any program I used (tvtime, xawtv, 
> MythTV).
> I'm attaching the part of /var/log/messages after the stick attach and the 
> output of the following commands:
> aplay -l
> arecord -l
> cat /proc/asound/cards
> cat /proc/asound/devices
> cat /proc/asound/modules
> cat /proc/asound/pcm
> If any other information may be useful, just ask.
> Thanks in advance for your help,
> Nicola

For you to listen on audio, you need to get the audio from the digital em28xx input and write it on your sound card output. Unfortunately, most programs don't do this. The only one that does is mplayer, if you pass the proper parameters for it. Something like (for PAL-M std):

mplayer -tv driver=v4l2:device=/dev/video0:norm=PAL-M:chanlist=us-bcast:alsa=1:adevice=hw.1:audiorate=48000:forceaudio=1:immediatemode=0:amode=1 tv://

Assuming that em28xx is detected as hw:1 and your audio as hw:0. You can check the wiki for more help about this subject.


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