[mythtv-users] HVR-950q analog/NTSC capture has no sound

[Hika van den Hoven]

Hoi James,

Friday, February 10, 2017, 12:17:36 AM, you wrote:

> Success! I ran make menuconfig and selected snd-usb-audio to be compiled
> as a module. Then I ran make (actually make -j3, as recommended by the
> Gentoo manual, since this is a dual-core system), then make 
> modules_install (didn't copy the resulting kernel anywhere since I'm using
> the running kernel's sources). That got me the module I needed, which I
> then modprobed.

> I first tried cvlc, which didn't really work (would only give me about 1
> or 2 seconds of audio to go along with the captured video, after which the
> audio would unceremoniously stop while the video continued). Next, I tried
> to reconfigure audio under capture cards in mythtv-setup. I noted from the
> thread referenced earlier that the correct syntax for specifying the audio
> output of this second HVR-950q is ALSA:hw:2,0. Once I'd entered that 
> information I got both video and sound, and with a little tweaking in the
> channel editor, created a pseudo-channel associated with the device which
> I can use to schedule recordings.

> Additional thoughts. I ended up with a /dev/dsp1 and /dev/dsp2 after 
> having modprobed snd-usb-audio. I note that using /dev/dsp2 also works to
> enable analog audio to go along with the video. Perhaps that's because I
> had earlier compiled snd-pcm-oss into the kernel (not sure why I made that
> choice at the time)?

> Since I have 2 of these devices I'll probably be creating a udev rule or
> maybe will put together an ALSA config file that will cause them to be
> brought up under consistent names when I will be needing to reboot.

> Again, thanks to all contributors for the input.
> _______________________________________________

udevadmin info --attribute-walk --name=/devdsp1
and
udevadmin info --attribute-walk --name=/devdsp2

gives you more info on the nodes

Tot mails,
  Hika                            mailto:hikavdh at gmail.com

"Zonder hoop kun je niet leven
Zonder leven is er geen hoop
Het eeuwige dilemma
Zeker als je hoop moet vernietigen om te kunnen overleven!"

De lerende Mens