[mythtv-users] Re: mpeg 2 playback glitches

Steven J. Finnegan sjf at controlsoftcorp.com
Thu Jul 24 18:36:28 EDT 2003


What did you have to change to get two-PVR-250's to work?
(I have a PVR-250 and a PVR-350 in the same backend.

sjf

At 14:43 7/24/2003, you wrote:
>From: Russ Southern <russ.southern at cox.net>
>Precedence: list
>Subject: Re: [mythtv-users] Re: mpeg2 playback glitches
>Date: Thu, 24 Jul 2003 14:50:51 -0500
>To: Discussion about mythtv <mythtv-users at snowman.net>
>References: <200307220741.h6M7f2Y6017530 at www.snowman.net>
>         <200307241210.07093.curtis at stanfordcomputing.com>
>         <200307241419.21102.ijr at po.cwru.edu>
>         <200307241244.14607.curtis at stanfordcomputing.com>
>In-Reply-To: <200307241244.14607.curtis at stanfordcomputing.com>
>Reply-To: Russ Southern <russ.southern at cox.net>,
>         Discussion about mythtv <mythtv-users at snowman.net>
>Message-ID: <20030724195051.GB14331 at cox.net>
>Content-Type: text/plain; charset=us-ascii
>MIME-Version: 1.0
>Message: 14
>
>On Thu, Jul 24, 2003 at 12:44:14PM -0600, Curtis Stanford wrote:
> > That's why I was trying to draw it back to the original issue. I've been
> > reading the ivtv-devel list and see references to an error I've been 
> getting:
> > "Not enough free buffers". I don't know if that's the problem but it's a
> > start.
>
>OK.  I can help with this one.  Add an option to /etc/modules.conf:
>options ivtv debug=1 mpg_buffers=100
>
>Reload the module and see if you get fewer of these errors.  It could be the
>"glitches" are dropped frames.  This setting could help.
>
>I have two PVR-250's and had to make a different change to eliminate these
>warnings altogether, but this should be enough for one card.
>
>Russ
>
>P.S. In case you need even more than 100, change the maximum by looking in
>ivtv-driver.c for a line like this:
>
>         if ((mpg_buffers > 100) || (mpg_buffers < 15)) {
>
>and change the 100 to a bigger number.



***************************************************************
Steven J. Finnegan, President
Controlsoft Corporation
Phone: (760) 747-5632
WebSite: www.controlsoftcorp.com
E-mail: sjf at controlsoftcorp.com

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