Alle domenica 11 gennaio 2009, Nicola Soranzo ha scritto: > Alle giovedì 08 gennaio 2009, Mauro Carvalho Chehab ha scritto: > > On Thu, 8 Jan 2009 03:00:33 +0100 > > > > Nicola Soranzo <nsoranzo@xxxxxxxxxx> wrote: > > > Alle giovedì 08 gennaio 2009, Mauro Carvalho Chehab ha scritto: > > > > On Wed, 7 Jan 2009 20:31:27 +0100 > > > > > > > > Nicola Soranzo <nsoranzo@xxxxxxxxxx> 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. > > > > > ... > > > > > 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 > > > > > > > > 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:ad > > > >ev ice= 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. > > > > > > I also have a webcam, so the tv is /dev/video1 and relative audio is > > > hw.2 (see attachments from my previous email). > > > Unfortunately I had tried previously with mplayer and using: > > > > > > mplayer -tv > > > driver=v4l2:device=/dev/video1:norm=PAL:chanlist=europe-west tv:// > > > > > > I can see the video without audio, while with: > > > > > > mplayer -tv driver=v4l2:device=/dev/video1:norm=PAL:chanlist=europe- > > > west:alsa=1:adevice=hw.2:audiorate=48000:forceaudio=1:immediatemode=0:a > > >mo de=1 tv:// > > > > > > mplayer exits immediately with this error: > > > > > > v4l2: current audio mode is : STEREO > > > v4l2: ioctl set format failed: Invalid argument > > > v4l2: ioctl set format failed: Invalid argument > > > v4l2: ioctl set format failed: Invalid argument > > > ALSA lib pcm_hw.c:1429:(_snd_pcm_hw_open) Invalid value for card > > > Error opening audio: Permission denied > > > ALSA lib pcm_hw.c:1429:(_snd_pcm_hw_open) Invalid value for card > > > Error opening audio: Permission denied > > > ALSA lib pcm_hw.c:1429:(_snd_pcm_hw_open) Invalid value for card > > > Error opening audio: Permission denied > > > v4l2: 0 frames successfully processed, 0 frames dropped. > > > > This is a udev issue. udev is creating the audio device without > > permission for your user to access it. Or you fix udev, or you'll need to > > run mplayer as a root (sigh!). > > Thanks Mauro, > running mplayer with sudo let me have the audio working! I noticed that every time I close mplayer in sudo mode, in /var/log/messages these messages appear: Jan 13 16:21:51 ozzy kernel: em28xx #0: resubmit of audio urb failed (error=-2) Jan 13 16:21:51 ozzy kernel: em28xx #0: resubmit of audio urb failed (error=-2) Jan 13 16:21:51 ozzy kernel: em28xx #0: resubmit of audio urb failed (error=-2) Jan 13 16:21:51 ozzy kernel: em28xx #0: resubmit of audio urb failed (error=-2) Jan 13 16:21:51 ozzy kernel: em28xx #0: resubmit of audio urb failed (error=-2) Jan 13 16:21:51 ozzy kernel: An underrun very likely occurred. Ignoring it. Also, if I run sudo arecord -D hw:2 -f dat prova.wav arecord starts recording, but when I interrupt it with control-C I have a complete kernel crash (even the Caps-Lock key is dead). For what I can understand, the problem can be related to IRQ. Can somebody help me? Thanks, Nicola _______________________________________________ linux-dvb users mailing list For V4L/DVB development, please use instead linux-media@xxxxxxxxxxxxxxx linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
