[mythtv-users] Question regarding PVR-150

Ian Forde ian at duckland.org
Sun Sep 2 05:09:37 UTC 2007

On Sat, 2007-09-01 at 20:17 -0700, Ian Forde wrote:
> On Sat, 2007-09-01 at 12:53 -0400, Michael T. Dean wrote:
> > The archives were wrong, then.  (But, thank you for doing the research
> > before posting. :)
> No worries - been on the list a long time... I know how it works! ;)
> > The proper way to change recording parameters is to go into the
> > recording profile settings to change the audio sample rate there.  I
> > recommend you do so now (to ensure the profile is properly configured).
> There's the problem... In the recording profile settings, when I select
> "MPEG-2 Encoders (PVR-250, PVR-350)" [1], select, let's say, "High
> Quality", I can't change the Sampling rate.  It seems locked at 48000
> (although I'm sure it was locked at 32000 before... and I just put those
> db entries back into codecparams as they were before and restarted both
> backends!)

Yep - locked at 48000 even after a reboot.  But the recordings are still

> > You'll also need to configure your ALSA appropriately to do rate
> > conversion for you.  See
> > http://www.mythtv.org/wiki/index.php/Configuring_Digital_Sound#Setting_up_ALSA.27s_.asoundrc.2C_Properly
> Did that over a year ago AFAIK...
> the frontend is set to "Audio output device: ALSA:digital"
> Passthrough output device: ALSA:iec958:{ AES0 0x02 }
> Enable AC3 to SPDIF passthrough is checked
> Aggressive Sound card Buffering is checked
> Use Internal volume controls is unchecked

> But why was I getting the errors on capture?  I can see how ALSA would
> be used to correct them during playback, but...

I'm convinced that it's a recording, not a playback issue.  I just tried
playing one of the recordings via mplayer on a different system.  Still

> Okay - so the DB settings are as they were, so now I just need to reboot
> the servers...
> I'll post the results.  Thanks!

Servers were rebooted before a new recording started.  That's the one I
tested.  mplayer says:

AUDIO: 48000 Hz, 2 ch, s16le, 384.0 kbit/25.00% (ratio: 48000->192000)
Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)

so I don't know what's going on... is anyone else experiencing this with
Centos5 and PVR-150/250 cards?  Looks like it's happening with 2 PVR-150
cards is separate backends connected to Analog cable, and one PVR-250 in
one of the boxes connected via RCA to a DCT-2000 box...

Same DB as when I was using FC5...


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